Federal Trade Commission v. AbbVie Inc ( 2020 )


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  •                                       PRECEDENTIAL
    UNITED STATES COURT OF APPEALS
    FOR THE THIRD CIRCUIT
    No. 18-2621
    FEDERAL TRADE COMMISSION,
    Appellant
    v.
    ABBVIE INC.; ABBOTT LABORATORIES; UNIMED
    PHARMACEUTICALS, LLC; BESINS HEALTHCARE,
    INC.; *TEVA PHARMACEUTICALS USA, INC.
    (*Dismissed Pursuant to Court’s 3/12/19 Order.)
    No. 18-2748
    FEDERAL TRADE COMMISSION
    v.
    ABBVIE INC.; ABBOTT LABORATORIES; UNIMED
    PHARMACEUTICALS, LLC; BESINS HEALTHCARE,
    INC.; *TEVA PHARMACEUTICALS USA, INC.
    Abbvie Inc.; Abbott Laboratories; Unimed
    Pharmaceuticals, LLC,
    Appellants
    (*Dismissed Pursuant to Court’s 3/12/19 Order.)
    No. 18-2758
    FEDERAL TRADE COMMISSION
    v.
    ABBVIE INC.; ABBOTT LABORATORIES; UNIMED
    PHARMACEUTICALS, LLC;
    BESINS HEALTHCARE, INC.; *TEVA
    PHARMACEUTICALS USA, INC.
    Besins Healthcare, Inc.,
    Appellant
    (*Dismissed Pursuant to Court’s 3/12/19 Order.)
    On Appeal from the United States District Court
    for the Eastern District of Pennsylvania
    (D.C. No. 2-14-cv-05151)
    District Judge: Honorable Harvey Bartle, III
    Argued on January 15, 2020
    2
    Before: HARDIMAN, PORTER and PHIPPS, Circuit Judges.
    (Filed: September 30, 2020)
    Mark S. Hegedus
    Federal Trade Commission
    MS-582
    600 Pennsylvania Avenue, N.W.
    Washington, DC 20580
    Matthew M. Hoffman [Argued]
    Joel R. Marcus
    Federal Trade Commission
    600 Pennsylvania Avenue, N.W.
    Washington, DC 20580
    Attorneys for Federal Trade Commission
    Brittany Amadi
    Catherine M.A. Carroll
    Leon B. Greenfield
    Seth P. Waxman [Argued]
    WilmerHale
    1875 Pennsylvania Avenue, N.W.
    Washington, DC 20006
    Elaine J. Goldenberg
    Munger Tolles & Olson
    601 Massachusetts Avenue, N.W.
    Suite 500e
    Washington, DC 20001
    Adam R. Lawton
    3
    Stuart N. Senator
    Jeffrey I. Weinberger
    Munger Tolles & Olson
    350 South Grand Avenue
    50th Floor
    Los Angeles, CA 90071
    William F. Lee
    WilmerHale
    60 State Street
    Boston, MA 02109
    Paul H. Saint-Antoine
    John S. Yi.
    Faegre Drinker Biddle & Reath
    One Logan Square
    Suite 2000
    Philadelphia, PA 19103
    Attorneys for AbbVie Inc, Abbott Laboratories, and Unimed
    Pharmaceuticals LLC
    Melinda F. Levitt
    Gregory E. Neppl [Argued]
    Foley & Lardner
    3000 K Street, N.W.
    Suite 600
    Washington, DC 20007
    Paul H. Saint-Antoine
    John S. Yi
    Faegre Drinker Biddle & Reath
    One Logan Square
    4
    Suite 2000
    Philadelphia, PA 19103
    Attorneys for Besins Healthcare, Inc.
    William A. Rivera
    AARP Foundation Litigation
    B4-230
    601 E Street, N.W.
    Washington, DC 20049
    Attorney for Amici AARP and AARP Foundation
    Ilana H. Eisenstein
    DLA Piper
    1650 Market Street
    One Liberty Place, Suite 5000
    Philadelphia, PA 19103
    Attorney for Amicus Chamber of Commerce of the United
    States of America
    Bradford J. Badke
    Sidley Austin
    787 Seventh Avenue
    New York, NY 10019
    Attorney for Amicus Amgen Inc
    Andrew D. Lazerow
    Covington & Burling
    850 10th Street, N.W.
    One City Center
    5
    Washington, DC 20001
    Attorney for Amicus Pharmaceutical Research and
    Manufacturers of America
    Richard M. Brunell
    Hilliard & Shadowen
    1135 West 6th Street
    Suite 125
    Austin, TX 78703
    Attorney for Amici American Antitrust Institute, Public
    Citizen Inc, and Public Knowledge
    OPINION OF THE COURT
    HARDIMAN, Circuit Judge.
    TABLE OF CONTENTS
    I.    FACTUAL BACKGROUND ........................................... 9
    A.   FDA Approval under the Hatch-Waxman Act ........... 9
    B.   Patent disputes under the Hatch-Waxman Act......... 11
    C.   Therapeutic equivalence ratings .............................. 12
    D.   Hypogonadism and testosterone
    replacement therapies .............................................. 13
    E.   AndroGel ................................................................. 14
    6
    F.     The ’894 patent’s prosecution history...................... 15
    G.     AndroGel’s competitors ........................................... 18
    H.     The lawsuits against Teva and Perrigo .................... 18
    I.     The settlements with Perrigo and Teva .................... 21
    J.     Teva and Perrigo’s generic versions of AndroGel ... 23
    II.        PROCEDURAL HISTORY ........................................ 24
    III.       JURISDICTION .......................................................... 26
    IV.        LIABILITY ................................................................. 35
    A.     The District Court erred by rejecting the
    reverse-payment theory.. .......................................... 35
    B.     The District Court erred in concluding AbbVie and
    Besins’s litigation against Teva was a sham; it did
    not err in concluding the Perrigo litigation was a
    sham. ........................................................................ 53
    C.     The District Court did not err in concluding
    AbbVie and Besins had monopoly power in the
    relevant market. ....................................................... 77
    V. REMEDIES .................................................................... 83
    A.     The District Court erred in ordering disgorgement.. 83
    B.     The District Court did not abuse its discretion in
    denying injunctive relief. ......................................... 93
    C.     Remand on the reverse-payment theory is not
    futile. ........................................................................ 97
    7
    This appeal involves a patented drug called AndroGel.
    A blockbuster testosterone replacement therapy that generated
    billions of dollars in sales, AndroGel caught the attention of
    the Federal Trade Commission. The FTC sued the owners of
    an AndroGel patent—AbbVie, Inc., Abbott Laboratories,
    Unimed Pharmaceuticals LLC, and Besins Healthcare, Inc.—
    under Section 13(b) of the Federal Trade Commission Act in
    the United States District Court for the Eastern District of
    Pennsylvania. The FTC alleged that Defendants filed sham
    patent infringement suits against Teva Pharmaceuticals USA,
    Inc. and Perrigo Company, and that AbbVie, Abbott, and
    Unimed entered into an anticompetitive reverse-payment
    agreement with Teva. The FTC accused Defendants of trying
    to monopolize and restrain trade over AndroGel.
    The District Court dismissed the FTC’s claims to the
    extent they relied on a reverse-payment theory but found
    Defendants liable for monopolization on the sham-litigation
    theory. The Court ordered Defendants to disgorge $448 million
    in ill-gotten profits but denied the FTC’s request for an
    injunction. The parties cross-appeal.
    We hold the District Court erred by rejecting the
    reverse-payment theory and in concluding Defendants’
    litigation against Teva was a sham. The Court did not err,
    however, in concluding the Perrigo litigation was a sham and
    that Defendants had monopoly power in the relevant market.
    Yet the FTC has not shown the monopolization entitles it to
    any remedy. The Court did not abuse its discretion in denying
    injunctive relief; and the Court erred by ordering disgorgement
    because that remedy is unavailable under Section 13(b) of the
    FTC Act. Accordingly, we will reinstate the FTC’s dismissed
    claims and remand for further proceedings consistent with this
    opinion. We will also affirm in part and reverse in part the
    8
    Court’s order adjudging Defendants liable for monopolization.
    Finally, we will affirm the Court’s order denying injunctive
    relief and reverse the Court’s order requiring Defendants to
    disgorge $448 million.
    I.      FACTUAL BACKGROUND
    A. FDA Approval under the Hatch-Waxman Act
    The Food, Drug, and Cosmetic Act (the FDC Act), 
    21 U.S.C. § 301
     et seq., empowers the Food and Drug
    Administration (FDA) to regulate the manufacture and sale of
    drugs in the United States. Before a pharmaceutical company
    can market a drug, it must obtain FDA approval. 
    Id.
     § 355(a).
    Under the FDC Act, as amended by the Drug Price
    Competition and Patent Term Restoration Act of 1984 (the
    Hatch-Waxman Act), 
    21 U.S.C. § 355
     and 
    35 U.S.C. § 271
    , a
    company can apply for FDA approval in one of three ways:
    1. Section 505(b)(1) New Drug Application (NDA). This is
    a “full-length” application. FTC v. AbbVie Inc., 
    329 F. Supp. 3d 98
    , 107 (E.D. Pa. 2018). The “gauntlet of
    procedures” associated with it is “long, comprehensive,
    and costly.” In re Wellbutrin XL Antitrust Litig. Indirect
    Purchaser Class, 
    868 F.3d 132
    , 143 (3d Cir. 2017)
    (citation omitted). It includes “full reports of
    investigations” into whether the drug is safe and
    effective, a “full list of . . . [the drug’s] components,” a
    “full description of the methods used in . . . the
    manufacture, processing, and packing” of the drug,
    samples of the drug, and specimens of the labeling the
    company proposes to use. 
    21 U.S.C. § 355
    (b)(1). A
    company must also list any relevant patents. See
    Wellbutrin, 868 F.3d at 144 (citation omitted). We refer
    9
    to drugs approved through this process as “brand-name”
    drugs.
    2. Section 505(j) Abbreviated New Drug Application
    (ANDA). This streamlined application is appropriate for
    a company seeking to market a generic version of a
    brand-name drug. The company need not produce its
    own safety and efficacy data. 
    21 U.S.C. § 355
    (j)(2)(A)(vi). But it must show that the generic drug
    is “the same” as the brand-name drug in certain relevant
    respects. 
    Id.
     § 355(j)(2)(A). It also must “assure the
    FDA that its proposed generic drug will not infringe the
    brand’s patents.” Caraco Pharm. Labs., Ltd. v. Novo
    Nordisk A/S, 
    566 U.S. 399
    , 406 (2012). It can do so by
    certifying that the manufacture, use, or sale of the
    generic will not infringe patents relating to the brand-
    name drug, or that those patents are invalid. 
    21 U.S.C. § 355
     (j)(2)(A)(vii)(IV). This certification is known as
    a “paragraph IV notice.” AbbVie, 329 F. Supp. 3d at
    108.
    The first company to seek FDA approval in this
    way enjoys “a period of 180 days of exclusivity,” during
    which “no other generic can compete with the brand-
    name drug.” FTC v. Actavis, Inc., 
    570 U.S. 136
    , 143–44
    (2013) (citing 
    21 U.S.C. § 355
     (j)(5)(B)(iv)). “[T]his
    180-day period . . . can prove valuable, possibly worth
    several hundred million dollars.” 
    Id. at 144
     (internal
    quotation marks and citation omitted). One exception is
    that during the 180-day exclusivity period, the brand-
    name company can produce a generic version of its own
    drug or license a third party to do so. See Mylan Pharm.,
    Inc. v. FDA, 
    454 F.3d 270
    , 276–77 (4th Cir. 2006).
    These “authorized generics” can decrease the value an
    10
    applicant receives from the 180-day exclusivity period
    to the extent they share the generic drug market and
    depress prices. See 
    id. at 273
    .
    3. Section 505(b)(2) New Drug Application (hybrid NDA).
    This application is appropriate for a company seeking
    to modify another company’s brand-name drug. For
    example, a company might seek FDA approval of “a
    new indication or new dosage form.” 
    21 C.F.R. § 314.54
    (a). This application is like an ANDA because
    the company need not produce all safety and efficacy
    data about the drug and because it must assure the FDA
    that its generic drug will not infringe the brand’s
    patents. See 
    21 U.S.C. § 355
    (b)(2)(A)(iv). But it differs
    from an ANDA because the company must produce
    some data, including whatever “information [is] needed
    to support the modification(s).” 
    21 C.F.R. § 314.54
    (a).
    The latter two pathways “speed the introduction of low-
    cost generic drugs to market” and promote competition in the
    pharmaceutical industry. Actavis, 570 U.S. at 142 (internal
    citation omitted).
    B. Patent disputes under the Hatch-Waxman Act
    The Hatch-Waxman Act also has provisions that
    encourage the quick resolution of patent disputes. See
    Wellbutrin, 868 F.3d at 144. A paragraph IV notice
    “automatically counts as patent infringement.” Id. (quoting
    Actavis, 570 U.S. at 143 (citing 
    35 U.S.C. § 271
    (e)(2)(A))).
    After receiving this notice, a patentee has 45 days to decide
    whether to sue. 
    21 U.S.C. § 355
    (j)(5)(B)(iii).
    11
    To help a patentee make that decision, the company
    seeking approval of a generic drug often allows the patentee’s
    outside counsel to review the company’s application in secret.
    If the patentee sues within the time limit, the FDA cannot
    approve the company’s application for a generic drug until one
    of three things happens: (1) a court holds that the patent is
    invalid or has not been infringed; (2) the patent expires; or (3)
    30 months elapse, as measured from the date the patentee
    received the paragraph IV notice. 
    21 U.S.C. § 355
    (j)(5)(B)(iii).
    The automatic, 30-month stay creates tension with the
    Hatch-Waxman Act’s procompetitive goals. Simply by suing,
    a patentee can delay the introduction of low-cost generic drugs
    to market and impede competition in the pharmaceutical
    industry. Cf. Actavis, 570 U.S. at 142.
    C. Therapeutic equivalence ratings
    After the FDA approves a company’s generic drug, the
    company can seek a therapeutic equivalence (TE) rating.
    “Products that are determined to be therapeutically equivalent
    [to the brand] are assigned an ‘A’ or ‘AB’ rating. Generic
    products for which therapeutic equivalence cannot be
    determined are assigned a ‘B’ or ‘BX’ rating.” AbbVie, 329 F.
    Supp. 3d at 107. Generic drug companies usually prefer A or
    AB ratings because every state’s law “either permit[s] or
    require[s] pharmacists to dispense a therapeutically equivalent,
    lower-cost generic drug in place of a brand drug.” Mylan
    Pharm. Inc. v. Warner Chilcott Pub. Ltd., 
    838 F.3d 421
    , 428
    (3d Cir. 2016) (internal quotation marks and citations omitted).
    12
    D. Hypogonadism and testosterone replacement
    therapies
    Hypogonadism is a clinical syndrome resulting from
    low testosterone in the human body. See AbbVie, 329 F. Supp.
    3d at 108. It affects an estimated 2-6 percent of the adult male
    population in the United States and causes “decreases in energy
    and libido, erectile dysfunction, and changes in body
    composition.” Id.
    Doctors treat hypogonadism with testosterone
    replacement therapies (TRTs). TRTs include injectables,
    topical/transdermals (TTRTs), and other therapies. Companies
    first marketed injectables in the 1950s. Because generic
    injectables have been available for decades, they are the least
    expensive. They involve dissolving testosterone in a liquid and
    injecting it into the patient’s body every one to three weeks.
    Some patients administer injections to themselves at home,
    while others receive injections at their doctor’s office or a
    specialized testosterone clinic. By contrast, TTRTs first
    appeared in the 1990s and are more expensive. They deliver
    testosterone to the patient’s body through a patch or gel applied
    to the patient’s skin. Gels are applied daily.
    TRTs have different benefits and drawbacks. Some
    patients dislike injectables because the injection is painful, or
    because the “peak in testosterone level” after the injection
    causes “swings in mood, libido, and energy.” Id. at 109. Many
    of these patients prefer TTRTs because they release
    testosterone steadily. Other patients dislike TTRT gels.
    Common complaints include skin irritation and the
    inconvenience of having to apply the gel daily. And patients
    sometimes transfer the testosterone gel to others inadvertently
    through skin-to-skin contact. Finally, some patients dislike
    13
    TTRT patches, which can irritate the skin and are visible to
    other people, depending on where the patch is applied.
    E. AndroGel
    In the 1990s, Laboratoires Besins International S.A.S.
    (LBI)—a corporate affiliate of Besins’s parent company—
    developed the TTRT gel that became AndroGel. In 1995, LBI
    licensed to Unimed certain intellectual property relating to the
    gel, and Unimed assumed responsibility for marketing the gel
    in the United States. In exchange, Unimed agreed to pay LBI a
    royalty on the gel’s net sales. Unimed secured FDA approval
    for the gel in 2000. That same year, Unimed and Besins filed a
    joint U.S. patent application, and, in 2003, 
    U.S. Patent No. 6,503,894
     (the ’894 patent) issued.
    Today, Besins and AbbVie co-own the ’894 patent.
    AbbVie acquired Unimed’s interest in the patent as follows: in
    1999, Unimed was acquired by Solvay; in 2010, Solvay was
    acquired by Abbott; in 2013, Abbott separated into two
    companies—Abbott and AbbVie—with AbbVie assuming all
    of Abbott’s propriety pharmaceutical business, including its
    interest in AndroGel.
    Solvay brought AndroGel to market in 2000. At the
    time, AndroGel was available only in a sachet form at 1%
    strength. From 2004-2013, Solvay and its successors marketed
    AndroGel in a metered-dose pump form. And in 2011, Abbott
    started marketing AndroGel at 1.62% strength. Sales of
    AndroGel 1.62% grew more slowly than anticipated, but by
    June 2012, they comprised most of AndroGel’s total sales.
    AndroGel has been a huge commercial success. Its
    annual net sales sometimes surpassed a billion dollars and
    14
    remained strong even after generic versions of AndroGel
    entered the market in 2015. From 2009-2015, it generated a
    high profit margin of about 65 percent.
    F. The ’894 patent’s prosecution history
    TTRT gels use “penetration enhancers” to accelerate the
    delivery of testosterone through a patient’s skin. AndroGel’s
    penetration enhancer is isopropyl myristate.
    Unimed and Besins’s joint patent application was U.S.
    Patent Application Serial No. 09/651,777. As originally
    drafted, claim 1 of the patent application claimed all
    penetration enhancers:
    A pharmaceutical composition useful for the
    percutaneous     delivery    of    an   active
    pharmaceutical ingredient, comprising:
    (a) a C1-C4 alcohol;
    (b) a penetration enhancer;
    (c) the active pharmaceutical ingredient; and
    (d) water.
    App. 909 (emphasis added). The penetration enhancers then in
    existence numbered in the tens of millions.
    In June 2001, the patent examiner rejected this claim as
    obvious over two prior art references—Mak in view of Allen.
    Mak disclosed the penetration enhancer oleic acid used in a
    transdermal testosterone gel. Allen disclosed isopropyl
    myristate, isopropyl palmitate, and three other penetration
    15
    enhancers used in a nitroglycerin cream. The examiner
    explained that “since all composition components herein are
    known to be useful for the percutaneous delivery of
    pharmaceuticals, it is considered prima facie obvious to
    combine them into a single composition useful for the very
    same purpose.” App. 1014–16.
    In October 2001, Unimed and Besins amended the
    patent application’s claim 1 to recite at least one of 24
    penetration enhancers, including isopropyl myristate and
    isostearic acid. Isopropyl palmitate was not among the 24.
    Unimed and Besins also added several new claims. Claim 47
    recited “a penetration enhancer selected from the group
    consisting of isopropyl myristate and lauryl alcohol.” App.
    1022. And claims 61 and 62 recited only isopropyl myristate as
    a penetration enhancer.
    Unimed and Besins sought “reconsideration and
    withdrawal of the [obviousness] rejections and allowance of
    the[se] claims.” App. 1039. In support, they cited AndroGel’s
    commercial success. See id.; see generally Graham v. John
    Deere Co. of Kansas City, 
    383 U.S. 1
    , 17 (1966) (holding
    commercial success is a “secondary consideration” suggesting
    nonobviousness). They also argued “[t]he mere fact that
    references can be combined or modified does not render the
    resultant combination obvious unless the prior art also suggests
    the desirability of the combination.” App. 1030–31 (citations
    omitted). For three reasons, they said, the prior art did not
    suggest combining Mak and Allen. First, Mak “[taught] away
    from using the presently claimed penetration enhancers by
    focusing on the superiority of oleic acid.” App. 1032. Second,
    the claimed penetration enhancers had an “unexpected and
    unique pharmacokinetic and phamacodynamic profile.” 
    Id.
    And third, “the prior art recognize[d] the chemical and
    16
    physiologic/functional differences of penetration enhancers,
    including the differences between oleic acid and the claimed
    enhancers, such as isopropyl myristate.” App. 1037–38.
    Attorneys for Unimed and Besins then met with the
    examiner for an interview. The examiner opined that “claims
    61-62 are . . . allowable over the prior art.” App. 1084. She also
    noted that the attorneys “argued claim 47 is novel [and]
    nonobvious over the prior art because the prior art does not
    teach the composition with particular concentrations [of
    isopropyl myristate and lauryl alcohol].” 
    Id.
    In December 2001 and February 2002, Unimed and
    Besins twice more amended the patent application. They
    cancelled claims 1 and 62, amended claim 47 to cover only a
    composition comprising isopropyl myristate, and modified the
    concentration ranges for isopropyl myristate in claim 61. With
    each amendment, they sought “reconsideration and withdrawal
    of the [obviousness] rejections and allowance of the[se]
    claims.” App. 1095, 1129.
    The examiner issued a notice of allowability. She wrote
    that “[t]he claimed pharmaceutical composition consisting
    essentially of the particular ingredients herein in the specific
    amounts, is not seen to be taught or fairly suggested by the
    prior art.” App. 1152. She clarified that she considered the
    amendments “all together,” and they sufficed to “remove the
    prior art rejection . . . over [Mak in view of Allen].” 
    Id.
    In January 2003, the ’894 patent issued. It expired on
    August 30, 2020.
    17
    G. AndroGel’s competitors
    When Solvay brought AndroGel to market in 2000, its
    only competitors were injectables and two TTRT patches (i.e.,
    Testoderm and Androderm). Since then, companies have
    marketed four other TTRT gels (i.e., Testim, Axiron, Fortesta,
    and Vogelxo). Companies have also developed other TRTs,
    including Striant (a buccal tablet applied twice daily to a
    patient’s gums), Testopel (a pellet surgically inserted into a
    patient’s body every three to six months), and Natesto (a nasal
    spray administered three times a day).
    H. The lawsuits against Teva and Perrigo
    In December 2008, Perrigo filed two ANDAs for a
    generic 1% testosterone gel in sachet and pump forms, and in
    June 2009 it served paragraph IV notices on Unimed and
    Besins. It asserted that because its gel used the penetration
    enhancer isostearic acid instead of isopropyl myristate, the gel
    would not literally infringe the ’894 patent. It also argued the
    gel would not infringe the patent under the doctrine of
    equivalents, which provides that “[t]he scope of a
    patent . . . embraces all equivalents to the claims described.”
    Festo Corp. v. Shoketsu Kinzoku Kogyo Kabushiki Co. (“Festo
    VIII”), 
    535 U.S. 722
    , 732 (2002). Perrigo explained the ’894
    patent’s prosecution history would estop Unimed and Besins
    from claiming equivalency between isostearic acid and
    isopropyl myristate, because they originally claimed isostearic
    acid before excluding it in response to a rejection. This
    limitation on the doctrine of equivalents is known as
    prosecution history estoppel. 
    Id.
     at 733–34.
    Solvay, Unimed, and Besins retained outside counsel to
    review Perrigo’s ANDAs. In July 2009, Solvay and Unimed
    18
    issued a press release stating that they had carefully evaluated
    the ANDAs and decided not to sue Perrigo, in part because
    Perrigo’s gel “contains a different formulation than the
    formulation protected by the AndroGel patent.” AbbVie, 329 F.
    Supp. 3d at 111. Besins also decided not to sue.
    That same year, the FDA learned that patients were
    accidentally transferring TTRT gels to children through skin-
    to-skin contact. AndroGel’s new owner Abbott petitioned the
    FDA to require Perrigo to resubmit its 2009 ANDAs as hybrid
    NDAs. See 
    21 C.F.R. § 10.30
     (FDA citizen petition form). That
    would require Perrigo to investigate whether isostearic acid
    poses a higher risk of accidental transfer than isopropyl
    myristate. Abbott also asked the FDA to require Perrigo to
    serve new paragraph IV notices on Abbott and Besins, thereby
    reopening the 45-day window for them to decide whether to
    sue. The FDA granted Abbott’s petition in relevant part.
    In January 2011, Teva filed a hybrid NDA for a generic
    1% testosterone gel in sachet and pump forms, and in March
    2011 it served paragraph IV notices on Abbott, Solvay,
    Unimed, and Besins. Teva asserted its gel would not literally
    infringe the ’894 patent because it used isopropyl palmitate
    instead of isopropyl myristate. It also explained that the ’894
    patent’s prosecution history would estop Abbott and Besins
    from claiming infringement on the ground that isopropyl
    palmitate is equivalent to isopropyl myristate. Abbott and
    Besins retained outside counsel to review Teva’s hybrid NDA.
    On April 29, 2011, Abbott, Unimed, and Besins sued
    Teva for patent infringement in the United States District Court
    for the District of Delaware. They argued that isopropyl
    myristate and isopropyl palmitate were equivalent. The lawsuit
    triggered the Hatch-Waxman Act’s automatic, 30-month stay
    19
    on FDA approval for Teva’s gel. Teva responded that
    prosecution history estoppel applied because Unimed and
    Besins’s October 2001 amendment—which narrowed the
    application’s claim 1 from all penetration enhancers to a list of
    24—surrendered isopropyl palmitate. Abbott, Unimed, and
    Besins disagreed. They cited an exception to prosecution
    history estoppel—known as “tangentiality”—that applies if
    “the rationale underlying the amendment [bore] no more than
    a tangential relation to the equivalent in question.” Festo VIII,
    
    535 U.S. at 740
    . Abbott, Unimed, and Besins argued the
    October 2001 amendment sought to overcome Mak’s use of
    oleic acid and was thus tangential to isopropyl palmitate, which
    Allen disclosed. The Court set trial for May 2012.
    In July 2011, Perrigo filed a hybrid NDA for generic 1%
    testosterone gel, and in September 2001, it served new
    paragraph IV notices on Abbott, Unimed, and Besins. It again
    asserted its gel would not infringe the ’894 patent. And it added
    that “a lawsuit asserting the ’894 patent against Perrigo would
    be objectively baseless and a sham, brought in bad faith for the
    improper purpose of, inter alia, delaying Perrigo’s NDA
    approval.” AbbVie, 329 F. Supp. 3d at 114. A bad faith motive
    for suing would be “particularly apparent,” Perrigo said, in
    light of Solvay’s July 2009 press release. Id. Abbott, Unimed,
    and Besins retained outside counsel to review Perrigo’s hybrid
    NDA.
    In August 2011, Abbott petitioned the FDA not to grant
    therapeutic equivalence ratings to hybrid NDAs referencing
    AndroGel. Alternatively, it asked the FDA to assign such
    products BX ratings.
    On October 31, 2011, Abbott, Unimed, and Besins sued
    Perrigo in the United States District Court for the District of
    20
    New Jersey. That lawsuit triggered the Hatch-Waxman Act’s
    automatic, 30-month stay on FDA approval for Perrigo’s gel.
    Four in-house patent attorneys in AbbVie’s intellectual
    property group and AbbVie’s general counsel decided to sue
    Teva and Perrigo. Those attorneys had “extensive experience
    in patent law and with AbbVie.” See id. at 113. However, “[n]o
    business persons at AbbVie were involved in the decision to
    sue.” Id. As for Besins, its in-house counsel Thomas
    MacAllister decided to sue. MacAllister is an experienced
    intellectual property attorney and a former patent examiner.
    I. The settlements with Perrigo and Teva
    In December 2011, Abbott and Perrigo settled. They
    agreed to dismiss all claims and counterclaims with prejudice;
    Abbott agreed to pay Perrigo $2 million as reasonable litigation
    expenses; and Abbott agreed to license Perrigo to market its
    generic 1% testosterone gel on either January 1, 2015 or when
    another generic version came to market, whichever was sooner.
    (The last provision is known as an acceleration clause). Perrigo
    unsuccessfully pushed for an earlier market entry date in
    settlement negotiations. Its assistant general counsel Andrew
    Solomon later said he predicted the acceleration clause would
    provide Perrigo with an earlier entry date, because he saw “a
    very good probability Teva could prevail” against Abbott and
    Besins at trial in the other lawsuit. AbbVie, 329 F. Supp. 3d at
    115. He also said he advised Perrigo that it had a 75 percent
    chance of success, had the litigation proceeded to trial. He
    explained this figure meant Perrigo felt “very, very strongly
    about [its] chances for success, recognizing that there is [an]
    inherent uncertainty . . . any time a case gets in front of an
    arbiter.” App. 4071.
    21
    Abbott and Teva also settled in December 2011, soon
    after the court set a trial date. Abbott agreed to license Teva to
    market its generic 1% testosterone gel on December 27,
    2014—almost six years before the ’894 patent expired. Teva
    pushed unsuccessfully for an earlier market–entry date in
    settlement negotiations.
    On the same day Abbott and Teva settled the
    infringement suit, they also made a deal involving a popular
    brand-name cholesterol drug named TriCor. A previous
    settlement between Abbott and Teva had set Teva’s entry in the
    TriCor market for July 2012. And because Teva was the first
    generic challenger to TriCor, Teva was entitled to 180 days of
    marketing exclusivity. Teva was struggling to capitalize on the
    exclusivity period, though, because it could not secure FDA
    approval. In the December 2011 deal, Abbott agreed to grant
    Teva a license to sell a generic version of TriCor, which Abbott
    would supply to Teva at Teva’s option, for a four-year term
    beginning in November 2012. This supply agreement provided
    for Teva to pay Abbott the costs of production, an additional
    percentage of that cost, and a royalty.
    According to the FTC, the December 2011 settlement
    agreement and TriCor deal were an illegal reverse payment. A
    reverse payment occurs when a patentee, as plaintiff, pays an
    alleged infringer, as defendant, to end a lawsuit. See
    Wellbutrin, 868 F.3d at 142 n.3 (citing Actavis, 570 U.S. at
    140–41). Such agreements can be anticompetitive if they allow
    a brand-name company to split its monopoly profits with a
    generic company in exchange for the generic agreeing to delay
    market entry. As applied here, the FTC alleges Abbott
    calculated that it would sacrifice about $100 million in TriCor
    sales, but that was a small fraction of the billions of dollars in
    AndroGel revenue it protected by deferring competition in the
    22
    TTRT market for three years. Deferring competition also gave
    Abbott time to shift sales to Androgel 1.62%, for which there
    were no generic competitors. As for Teva, it “concluded that it
    would be better off by sharing in AbbVie[’s] monopoly profits
    from the sale of AndroGel than by competing.” App. 4418.
    Teva’s settlement triggered the acceleration clause in
    Perrigo’s settlement agreement, so Perrigo’s licensed entry
    date became December 27, 2014.
    J. Teva and Perrigo’s generic versions of AndroGel
    In February 2012, the FDA approved Teva’s hybrid
    NDA for the sachet form of its generic 1% testosterone gel.
    Teva withdrew the pump form from its application after the
    FDA identified a safety concern with the packaging. But the
    FDA allowed Teva to resubmit the pump form as a post-
    approval amendment.
    In January 2013, the FDA approved Perrigo’s hybrid
    NDA for generic 1% testosterone gel. It then considered the
    gel’s therapeutic equivalence rating. Perrigo sent the FDA three
    letters to expedite the FDA’s consideration. AbbVie petitioned
    the FDA to issue Perrigo’s product a BX rating.
    In March 2014, Perrigo sued the FDA, accusing it of
    unreasonable delay. The FDA responded that “Perrigo has
    itself obviated the need for a prompt decision by reaching an
    agreement with [Abbott] not to market until December 2014.”
    AbbVie, 329 F. Supp. 3d at 116. It said it expected to rate
    Perrigo’s gel “by July 31, 2014—some five months before
    Perrigo’s planned product launch.” Id. On July 23, 2014, the
    FDA issued the gel an AB rating, and Perrigo dismissed its
    lawsuit against the FDA. See id. at 116, 116 n.9. Perrigo
    23
    brought its gel to market on December 27, 2014, its licensed
    entry date.
    Also on July 23, 2014, the FDA issued Teva’s gel a BX
    rating. Teva never marketed the product.
    II.    PROCEDURAL HISTORY
    The FTC sued AbbVie, Abbott, Unimed, Besins, and
    Teva under Section 13(b) of the FTC Act in the United States
    District Court for the Eastern District of Pennsylvania. 
    15 U.S.C. § 53
    (b). We refer to AbbVie, Abbott, Unimed, and
    Solvay as “AbbVie” for simplicity.
    In Count I of the complaint, the FTC alleged AbbVie
    and Besins willfully maintained a monopoly through a course
    of anticompetitive conduct, including sham patent litigation
    against Teva and Perrigo. In Count II, the FTC alleged AbbVie
    restrained trade by entering into an anticompetitive reverse-
    payment agreement with Teva. The FTC requested that the
    Court enjoin AbbVie and Besins “from engaging in similar and
    related conduct in the future,” and that the Court “grant such
    other equitable [monetary] relief as [it] finds necessary,
    including restitution or disgorgement.” App. 4454.
    AbbVie and Besins moved to dismiss “Count I to the
    extent it [wa]s premised on the” alleged reverse payments,
    under Rule 12(b)(6) of the Federal Rules of Civil Procedure.
    Dkt. 2:14-cv-05151, ECF No. 38 at 1. AbbVie also moved to
    dismiss Count II in its entirety, as it was based only on the
    reverse-payment theory. The District Court granted both
    motions.
    24
    The FTC moved for reconsideration after our decision
    in King Drug Co. of Florence, Inc. v. SmithKline Beecham
    Corp., 
    791 F.3d 388
     (3d Cir. 2015). But the District Court
    distinguished King Drug and denied the motion.
    The FTC then moved for partial summary judgment on
    the sham-litigation theory supporting Count I. AbbVie and
    Besins sought summary judgment as well.
    The sham-litigation theory required the FTC to prove
    (1) that AbbVie had monopoly power in the relevant market
    and (2) that AbbVie willfully acquired or maintained that
    power through sham litigation. See Mylan, 838 F.3d at 433.
    Sham litigation has two prongs. “First, the lawsuit must be
    objectively baseless in the sense that no reasonable litigant
    could realistically expect success on the merits.” Prof’l Real
    Estate Invs., Inc. v. Columbia Pictures Indus., Inc. (“PRE”),
    
    508 U.S. 49
    , 60 (1993). And second, the lawsuit must conceal
    an attempt to interfere directly with the business relationships
    of a competitor through the use of the governmental process as
    an anticompetitive weapon. See 
    id.
     at 60–61. The FTC sought
    summary judgment only on the objective baselessness prong.
    The District Court granted the FTC partial summary
    judgment and denied AbbVie and Besins’s motions. The Court
    held a sixteen-day bench trial on sham litigation’s subjective
    prong and monopoly power, and it found for the FTC on both.
    See AbbVie, 329 F. Supp. 3d at 146. The Court awarded
    “equitable monetary relief in favor of the FTC and against
    [AbbVie and Besins] in the amount of $448 million, which
    represent[ed] disgorgement of [their] ill-gotten profits.” Id. It
    25
    declined to enter an injunction. The FTC, AbbVie, and Besins
    now appeal.
    The FTC argues the District Court erred in dismissing
    its claims to the extent they relied on a reverse-payment theory;
    abused its discretion in calculating the amount of
    disgorgement; and abused its discretion in denying the FTC
    injunctive relief.
    AbbVie and Besins argue the District Court erred in
    concluding the infringement suits against Teva and Perrigo met
    either prong of the sham-litigation standard, and that AbbVie
    had monopoly power in the relevant market. They also argue
    the Court erred in ordering disgorgement because Section
    13(b) of the FTC Act does not authorize disgorgement, the
    disgorgement is a penalty rather than an equitable remedy, and
    the FTC failed to prove statutory preconditions for injunctive
    relief. Finally, they argue the Court abused its discretion in
    calculating the amount of disgorgement
    III.    JURISDICTION
    The District Court had jurisdiction under 
    28 U.S.C. § 1331
    . The parties to this appeal agree that we have
    jurisdiction. Yet we have a “continuing obligation to . . . raise
    the issue of subject matter jurisdiction if it is in question.”
    Bracken v. Matgouranis, 
    296 F.3d 160
    , 162 (3d Cir. 2002)
    (citations omitted).
    Our jurisdiction under 
    28 U.S.C. § 1291
     extends to
    “appeals from all final decisions of the district courts of the
    United States.” But there is an exception. The United States
    Court of Appeals for the Federal Circuit has “exclusive
    jurisdiction . . . of an appeal from a final decision of a district
    26
    court of the United States . . . in any civil action arising
    under . . . any Act of Congress relating to patents.” 
    28 U.S.C. § 1295
    (a)(1) (emphasis added).
    A civil action “aris[es] under” federal patent law if “a
    well-pleaded complaint” shows either that “federal patent law
    creates the cause of action,” or “the plaintiff’s right to relief
    necessarily depends on resolution of a substantial question of
    federal patent law, in that patent law is a necessary element of
    one of the well-pleaded claims.” Christianson v. Colt Indus.
    Operating Corp., 
    486 U.S. 800
    , 809 (1988) (emphasis added).
    In this appeal, the former basis for the Federal Circuit’s
    jurisdiction does not apply because “[f]ederal . . . antitrust law,
    not federal patent law, creates [the FTC’s] claims.” In re Lipitor
    Antitrust Litig., 
    855 F.3d 126
    , 145 (3d Cir. 2017) (emphasis
    omitted). So “[t]his case . . . turns on the [latter basis]” for the
    Federal Circuit’s exclusive jurisdiction. 
    Id.
    The latter basis applies only if two requirements are
    met. First, federal patent law must be a “necessary” element of
    one of the plaintiff’s well-pleaded claims. Here, the word
    “necessary” takes its strict, logical meaning: “a claim
    supported by alternative theories in the complaint may not
    form the basis for [the Federal Circuit’s exclusive jurisdiction]
    unless patent law is essential to each of those theories.”
    Christianson, 
    486 U.S. at 810
     (emphasis added). And the
    patent-law issues must be “substantial.” 
    Id. at 809
    .
    The Supreme Court has yet to interpret the
    substantiality requirement in a case involving 
    28 U.S.C. § 1295
    (a)(1) in its current form. But it has addressed the
    requirement in cases involving 
    28 U.S.C. § 1338
    (a), which is
    analogous because it gives district courts exclusive jurisdiction
    over “any civil action arising under any Act of Congress
    27
    relating to patents.” (emphasis added). In Gunn v. Minton, 
    568 U.S. 251
     (2013), the Court held a state legal malpractice claim
    arising out of a patent infringement proceeding did not present
    a “substantial” federal issue vesting federal district courts with
    exclusive jurisdiction. 
    Id. at 261
    . The Court first clarified that
    whether a question is “substantial” turns not on the
    “importance of the issue to the plaintiff’s case and to the
    parties,” but instead on “the importance of the issue to the
    federal system as a whole.” 
    Id. at 260
    . Applying that standard,
    it emphasized that because the legal malpractice claim was
    “backward-looking” and the issue it raised was “hypothetical,”
    the state court could not change the patent’s invalidity as
    determined by the prior federal patent litigation. 
    Id. at 261
    . Nor
    could the state court undermine the uniformity of federal patent
    law going forward, because federal courts “are of course not
    bound by state court . . . patent rulings” and “state courts can
    be expected to hew closely to the pertinent federal precedents.”
    
    Id.
     at 261–62 (citations omitted). Moreover, any preclusive
    effect the state court’s ruling might have “would be limited to
    the parties and patents that had been before the state court.” 
    Id. at 263
    . Finally, the mere possibility that the state court might
    misunderstand patent law and incorrectly resolve a state claim
    was not “enough to trigger the federal courts’ exclusive patent
    jurisdiction.” 
    Id.
    This appeal meets neither of the requirements for the
    latter basis of the Federal Circuit’s exclusive jurisdiction. Thus,
    the Federal Circuit does not have exclusive jurisdiction here.
    First, federal patent law is not a “necessary” element of one of
    the FTC’s well-pleaded claims. In its complaint, the FTC
    “challenges a course of anticompetitive conduct,” which the
    complaint defines to include AbbVie and Besins’s “sham
    patent infringement litigation” and “[AbbVie’s] . . . illegal
    28
    [reverse-payment] agreement.” App. 4416. The complaint then
    asserts two counts. Count II (Restraint of Trade) claims AbbVie
    violated federal antitrust law by entering into an
    anticompetitive reverse-payment agreement with Teva. App.
    4453–54. We have held that “reverse-payment antitrust claims
    do not present a question of patent law.” Lipitor, 855 F.3d at
    146 (citing Actavis, 570 U.S. at 158 (“[T]he size of the
    unexplained reverse payment can provide a workable surrogate
    for a patent’s weakness, all without forcing a court to conduct
    a detailed exploration of the validity of the patent itself.”)
    (citation omitted)). Thus, patent law is not a necessary element
    of Count II.
    The same reasoning applies to Count I
    (Monopolization). It first “reallege[s] and incorporate[s] by
    reference” all of the complaint’s allegations. App. 4453. It then
    asserts that AbbVie and Besins willfully maintained a
    monopoly “through a course of anticompetitive conduct,
    including filing sham patent litigation against Teva and
    Perrigo.” Id. By its terms, Count I challenges a “course of
    anticompetitive conduct,” which the complaint earlier defines
    to include not only sham litigation, but also the reverse-
    payment agreement. Because reverse-payment theories do not
    present a question of patent law, patent law is not a necessary
    element of Count I either.
    Our reasoning is consistent with the Supreme Court’s
    decision in Christianson and our decision in Lipitor. In both
    cases, the presence of “non-patent-law theories of liability
    supporting the . . . plaintiffs’ monopolization claims vest[ed]
    jurisdiction over their appeals” in the regional circuit, “not the
    29
    Federal Circuit.” Lipitor, 855 F.3d at 146 (citing Christianson,
    
    486 U.S. at 812
    ).
    The parties’ conduct before the District Court also
    supports our interpretation. AbbVie and Besins moved to
    dismiss “Count I to the extent it [wa]s premised on the” alleged
    reverse payments. Dkt. 2:14-cv-05151, ECF No. 38 at 1. The
    District Court granted that motion. Because Count I is
    premised, at least in part, on this non-patent-law theory, the
    Federal Circuit does not have exclusive jurisdiction over this
    action.
    It is true that the FTC pleads in Count I that the course
    of conduct “includ[es]” sham patent litigation. App. 4453. And
    a sham-litigation theory does present patent-law questions
    because it requires us to review the objective reasonableness of
    AbbVie and Besins’s patent-infringement litigation against
    Teva and Perrigo. See PRE, 
    508 U.S. at 60
    . But that fact does
    not undermine our jurisdiction because the sham-litigation
    theory is one of two theories supporting Count I. And the other
    theory—the reverse-payment theory—does not present a
    question of patent law. See Christianson, 
    486 U.S. at 810
    .
    We also note that the FTC has not contended that Besins
    and Teva entered into an independent reverse-payment
    agreement. Thus, it might be argued the FTC’s right to relief as
    against Besins necessarily depends on resolution of patent-law
    questions. 1 We disagree because the FTC’s complaint may be
    read to allege that Besins participated in AbbVie’s settlement
    with Teva. The complaint notes “[t]he sham lawsuits did not
    1
    Judge Phipps would have accepted this argument and
    held we have jurisdiction because the patent-law issues the
    FTC’s sham-litigation theory presents are not substantial.
    30
    eliminate the threat of Teva’s and Perrigo’s products to AbbVie
    Defendants and Besins’s monopoly.” App. 4441. It then asserts
    “AbbVie . . . and Besins . . . turned to other ways to preserve
    their monopoly,” including AbbVie’s settlement with Teva.
    App. 4442. As mentioned above, the parties’ conduct before
    the District Court supports our reading because both AbbVie
    and Besins moved to dismiss “Count I to the extent it [wa]s
    premised on the” alleged reverse payments.
    Thus, patent law is not a “necessary” element of one of
    the FTC’s well-pleaded claims, so the latter basis for the
    Federal Circuit’s exclusive jurisdiction does not apply.
    Second, the patent-law issues that the FTC’s sham-
    litigation theory presents are not “substantial,” in the sense that
    they are important to the “federal system as a whole.” Gunn,
    
    568 U.S. at 260
    . So even if federal patent law were a
    “necessary” element of one of the FTC’s well-pleaded claims,
    the latter basis for the Federal Circuit’s exclusive jurisdiction
    still would not apply. Like the state legal malpractice claim in
    Gunn, the sham-litigation theory here is purely backward
    looking: just as the state court’s adjudication of the legal
    malpractice claim could not change the result of the prior
    federal patent litigation, our adjudication of the FTC’s sham-
    litigation theory cannot change the settlement that resulted
    from AbbVie and Besins’s infringement suits against Teva and
    Perrigo. See 
    id. at 261
    . 2
    Nor would adjudicating the sham-litigation theory
    undermine the uniformity of federal patent law. See 
    id.
     at 261–
    2
    It might be argued the patent-law issues Gunn
    presented are less substantial than the ones we face here
    because the patent litigation in Gunn led to the patent’s
    31
    62. The reasons for this are general and case specific.
    Generally, much like the state court’s decision in Gunn could
    not bind federal courts, the parts of our decision in this appeal
    that interpret patent law cannot bind the Federal Circuit or
    district courts outside the Third Circuit. See 
    id.
     And like the
    state court in Gunn, we must hew closely to the Federal
    Circuit’s precedents. See 
    id.
     If the patent-law issues we decide
    arise frequently, they “will soon be resolved within [the Federal
    Circuit], laying to rest any contrary . . . precedent.” 
    Id. at 262
    .
    Otherwise, they are “unlikely to implicate substantial federal
    interests.” 
    Id.
    There are two additional, case-specific reasons that
    adjudicating the sham-litigation theory would not undermine
    the uniformity of federal patent law. First, litigation is a sham
    only if it is objectively baseless, meaning “no reasonable
    litigant could realistically expect success on the merits.” PRE,
    
    508 U.S. at 60
    . Our application of this standard poses no threat
    to the uniformity of federal patent law. Consider our choices in
    this appeal: AbbVie and Besins’s lawsuits were or were not
    shams. If the former, it must be true that the patent law we
    apply is so clear that AbbVie and Besins were unreasonable in
    suing Teva or Perrigo for infringement and expecting to
    invalidation, see id. at 255, whereas the ’894 patent has not
    been invalidated. Indeed, while the ’894 patent expired on
    August 30, 2020, AbbVie and Besins may sue for infringement
    for up to six years after that date. See 
    35 U.S.C. § 286
    . We think
    this distinction is immaterial under Gunn, which emphasized
    that state-court adjudication of the legal malpractice claim
    would not change the result of the prior federal patent
    litigation, rather than emphasizing the result itself. See 
    568 U.S. at 261
    .
    32
    succeed. Such a holding would effectively adjudicate the
    merits of an infringement claim but at no cost to uniformity.
    And the latter holding would mean only that AbbVie and
    Besins were not unreasonable in expecting success in their
    infringement suits. That conclusion would not undermine
    uniformity because it would not adjudicate the merits of the
    infringement claims.
    Moreover, whether AbbVie and Besins’s infringement
    lawsuits were shams depends on whether the tangentiality
    exception to prosecution history estoppel applies. But the
    Federal Circuit has cautioned against applying analogical
    reasoning in determining tangentiality. See Eli Lilly & Co. v.
    Hospira, Inc., 
    933 F.3d 1320
    , 1332 n.5 (Fed. Cir. 2019) (“[W]e
    find the analogies to other cases less helpful than a direct
    consideration of the specific record of this case and what it
    shows about the reason for amendment and the relation of that
    reason to the asserted equivalent.”). Because the Federal
    Circuit limits reliance on its own precedents in determining
    tangentiality, it follows that our decision in this appeal will
    have limited effect on the uniformity of patent law. Even
    setting Eli Lilly aside, however, the rarity of the patent-law
    issues these appeals present counsels in favor of our
    jurisdiction: the issues are not ones whose resolution will
    control numerous other cases. See Gunn, 
    568 U.S. at 262
    (quoting Empire Healthchoice Assurance, Inc. v. McVeigh, 
    547 U.S. 677
    , 700 (2006)).
    Finally, here, as in Gunn, the preclusive effect of our
    ruling “would be limited to the parties and patents” before us.
    See 
    568 U.S. at 263
    . And the mere possibility that we might
    misunderstand patent law is not dispositive. See 
    id.
     So the
    patent-law issues that the FTC’s sham-litigation theory
    presents are not “substantial.” Even if federal patent law were
    33
    a “necessary” element of one of the FTC’s well-pleaded
    claims, the latter basis for the Federal Circuit’s exclusive
    jurisdiction still would not apply.
    Before concluding, we note a prudential consideration
    supporting our jurisdiction: “[u]nder the Federal Circuit’s
    choice-of-law rules, it would apply Third Circuit antitrust
    jurisprudence . . . when reviewing whether [the FTC] states[s
    a] plausible claim[] for relief under” a reverse-payment theory.
    Lipitor, 855 F.3d at 148 (citing Nobelpharma AB v. Implant
    Innovations, Inc., 
    141 F.3d 1059
    , 1068 (Fed. Cir. 1998) (the
    Federal Circuit “appl[ies] the law of the appropriate regional
    circuit to issues involving other elements of antitrust law such
    as relevant market, market power, damages, etc., as those
    issues are not unique to patent law”)). The Federal Circuit
    would also apply our precedent when reviewing the District
    Court’s judgment on the sham-litigation theory, except when
    the judgment raised issues unique to patent law. See 
    id.
    Needless to say, we are as capable of applying our own law as
    the Federal Circuit. And it makes eminent sense for this Court
    to develop our own law in this area.
    In summary, neither basis for the Federal Circuit’s
    exclusive jurisdiction applies: federal patent law does not
    create the FTC’s cause of action, and the FTC’s right to relief
    does not necessarily depend on resolution of a substantial
    question of federal patent law. So this civil action does not
    “aris[e] under” federal patent law within the meaning of 
    28 U.S.C. § 1295
    (a)(1). We have jurisdiction under 
    28 U.S.C. § 1291
    .
    34
    IV.     LIABILITY
    Having assured ourselves of our jurisdiction, we turn to
    the merits of these cross-appeals. We hold the District Court
    erred by rejecting the reverse-payment theory and in
    concluding AbbVie and Besins’s litigation against Teva was a
    sham. The Court did not err, however, in concluding the
    Perrigo litigation was a sham and that AbbVie and Besins had
    monopoly power in the relevant market.
    A. The District Court erred by rejecting the
    reverse-payment theory.
    We review the District Court’s dismissal order de novo.
    Phillips v. Cnty. of Allegheny, 
    515 F.3d 224
    , 230 (3d Cir. 2008)
    (citation omitted). We must “accept all factual allegations as
    true, construe the complaint in the light most favorable to the
    plaintiff, and determine whether, under any reasonable reading
    of the complaint, the plaintiff may be entitled to relief.” 
    Id. at 231
     (internal citation and quotation marks omitted). A plaintiff
    relying on a reverse-payment theory must “allege facts
    sufficient to support the legal conclusion that the settlement at
    issue involves a large and unjustified reverse payment under
    Actavis.” In re Lipitor Antitrust Litig., 
    868 F.3d 231
    , 252 (3d
    Cir. 2017) (citation omitted).
    1. Actavis
    A reverse payment occurs when a patentee pays an
    alleged infringer to end a lawsuit. See Wellbutrin, 868 F.3d at
    142 n.3 (citing Actavis, 570 U.S. at 140–41). A typical reverse
    payment happens this way: “Company A sues Company B for
    patent infringement. The two companies settle under terms that
    require (1) Company B, the claimed infringer, not to produce
    35
    the patented product until the patent’s term expires, and (2)
    Company A, the patentee, to pay B many millions of dollars.”
    Actavis, 570 U.S. at 140.
    Reverse payments can be anticompetitive in violation of
    the antitrust laws. Absent the reverse payment in the previous
    example, Company B might have prevailed by proving
    Company A’s patent invalid. Even if the patent were valid,
    Company B might prevail by showing it did not infringe. In
    either case, generic drugs would have entered the market
    before Company A’s patent was set to expire, and consumers
    would have benefited from lower drug prices.
    In Actavis, the Supreme Court held reverse payments
    “can sometimes unreasonably diminish competition in
    violation of the antitrust laws.” Id. at 141. That case, like this
    one, involved AndroGel. See id. at 144. Solvay sued Actavis,
    Inc., a company seeking to market a generic version of the gel.
    See id. at 145. Solvay and Actavis settled under the following
    terms: (1) “Actavis agreed that it would not bring its generic to
    market until . . . 65 months before Solvay’s patent expired
    (unless someone else marketed a generic sooner)”; (2)
    “Actavis also agreed to promote AndroGel to urologists”; and
    (3) “Solvay agreed to pay . . . an estimated $19–$30 million
    annually, for nine years, to Actavis.” Id. “The companies
    described these payments as compensation for other services
    [Actavis] promised to perform.” Id. at 145. The FTC was
    unpersuaded. It sued Solvay and Actavis, contending the
    services had little value and the payments actually
    compensated the generics for delaying their market entry. See
    id.
    The district court dismissed the FTC’s complaint, and
    the United States Court of Appeals for the Eleventh Circuit
    36
    affirmed. See id. at 145–46. Both courts applied the “scope of
    the patent” test, which provides that “absent sham litigation or
    fraud in obtaining the patent, a reverse payment settlement is
    immune from antitrust attack so long as its anticompetitive
    effects fall within the scope of the exclusionary potential of the
    patent.” Id. at 146 (citation omitted). This “categorical
    rule . . . relied on the premise that, because a patentee
    possesses a lawful right to keep others out of its market, the
    patentee may also enter into settlement agreements excluding
    potential patent challengers from entering that market.”
    Lipitor, 868 F.3d at 250 (citing Actavis, 570 U.S. at 146). The
    Eleventh Circuit was also concerned that antitrust review of
    reverse payments would undermine the general policy in favor
    of settlements and “require the parties to litigate the validity of
    the patent in order to demonstrate what would have happened
    to competition in the absence of the settlement.” Actavis, 570
    U.S. at 153.
    The Supreme Court reversed. It first rejected the scope
    of the patent test. The infringement suit Solvay and Actavis
    settled “put the patent’s validity at issue, as well as its actual
    preclusive scope.” Actavis, 570 U.S. at 147. And the parties’
    settlement was both “unusual” and potentially anticompetitive,
    because the FTC alleged Solvay “agreed to pay [Actavis] many
    millions of dollars to stay out of its market, even though
    [Actavis] did not have any claim that [Solvay] was
    liable . . . for damages.” Id. at 147–48. These factors persuaded
    the Court it would be “incongruous to determine antitrust
    legality by measuring the settlement’s anticompetitive effects
    solely against patent law policy, rather than measuring them
    against procompetitive antitrust policies as well.” Id. at 148.
    The Court then held that for five reasons, the district
    court erred by dismissing the FTC’s complaint. See id. at 153.
    37
    First, reverse payments can be anticompetitive because they
    allow a brand-name company to split its monopoly profits with
    a generic company willing to delay market entry. See id. at
    153–56. Second, reverse payments’ “anticompetitive
    consequences will at least sometimes prove unjustified.” Id. at
    156. A defendant might show that “traditional settlement
    considerations, such as avoided litigation costs or fair value for
    services” justified the reverse payment. Id. Alternatively,
    antitrust review could reveal “a patentee is using its monopoly
    profits to avoid the risk of patent invalidation or a finding of
    noninfringement,” in which case the payment is not justified.
    Id. Third and fourth, the “size of [an] unexplained reverse
    payment can provide a workable surrogate for a patent’s
    weakness” and a patentee’s market power, “all without forcing
    a court to conduct a detailed exploration of the patent itself.”
    Id. at 157–58 (citation omitted). Fifth, subjecting reverse
    payments to antitrust review does not violate the general legal
    policy in favor of settlements, because companies can settle in
    other ways. See id. at 158. For example, a brand-name
    company may “allow[] the generic manufacturer to enter the
    patentee’s market prior to the patent’s expiration, without the
    patentee paying the challenger to stay out prior to that point.”
    Id. Thus, the Court concluded, “a reverse payment, where large
    and unjustified,” can violate the antitrust laws. Id. at 158–60
    (emphasis added).
    2. King Drug and Lipitor
    Since the Supreme Court decided Actavis, we have
    applied its teachings on three occasions. See King Drug, 791
    F.3d at 393; Lipitor, 868 F.3d at 239; Wellbutrin, 868 F.3d at
    158. The parties to this appeal rely on King Drug and Lipitor.
    38
    In King Drug, we reinstated a complaint challenging a
    settlement agreement in which the alleged reverse payment
    took a form other than cash. See 791 F.3d at 393. There, direct
    purchasers of the brand-name drug Lamictal sued its producer
    (GlaxoSmithKline (GSK)) and generic applicant (Teva) over
    their settlement of Teva’s challenge to the validity and
    enforceability of GSK’s patents on Lamictal’s active
    ingredient (lamotrigine). See id. Teva agreed to “end its
    challenge to GSK’s patent in exchange for early entry into the
    $50 million annual lamotrigine chewables market and GSK’s
    commitment not to produce its own, ‘authorized generic’
    version of Lamictal tablets for the market alleged to be worth
    $2 billion annually.” Id. at 393–94. The purchasers claimed this
    “no-AG agreement” was a reverse payment under Actavis
    because it “was designed to induce Teva to abandon the patent
    fight and thereby agree to eliminate the risk of competition in
    the $2 billion lamotrigine tablet market.” Id. at 394.
    Reversing the district court, we held the no-AG
    agreement was actionable under Actavis. See id. The district
    court had reasoned that “when the Supreme Court said
    ‘payment’ it meant a payment of money.” Id. at 405 (quotation
    marks and citation omitted). We doubted “the Court intended
    to draw such a formal line.” Id. at 405–06. We explained that
    even though GSK did not pay Teva cash under the agreement,
    it was “likely to present the same types of problems as reverse
    payments of cash.” Id. at 404. The no-AG agreement could
    have been worth millions of dollars, if not hundreds of millions
    of dollars, to Teva. See id. Conversely, GSK’s commitment not
    to produce an authorized generic transferred to Teva “the
    profits [GSK] would have made from its authorized generic.”
    Id. at 405. Thus, the agreement may have been “something
    39
    more than just an agreed-upon early entry”—it may have been
    “pay-for-delay.” Id.
    We also rejected the defendants’ counterargument that
    the purchasers’ “allegations [were] far too speculative to satisfy
    their burden of plausibly alleging that the settlement was
    anticompetitive.” Id. at 409 (quotations and citation omitted).
    Specifically, the defendants argued the purchasers needed to
    plead that without the reverse payment: GSK and Teva would
    have negotiated an alternative, more competitive agreement;
    continued litigation ending in settlement would have yielded a
    more competitive result; and Teva would have launched its
    generics. See id.
    We held the purchasers stated a claim. They alleged:
    GSK agreed not to launch an authorized generic during Teva’s
    180-day exclusivity period; the agreement was worth “many
    millions of dollars of additional revenue”; GSK would
    otherwise be incentivized to launch an authorized generic;
    Teva likely would have launched alongside GSK; and GSK’s
    patent was likely to be invalidated. See id. at 409–10. “And
    although [the purchasers] concede[d] that Teva entered the
    lamotrigine chewables market about 37 months early . . . the
    chewables market, allegedly worth only $50 million annually,
    was orders of magnitude smaller than the alleged $2 billion
    tablet market the agreement [was] said to have protected.” Id.
    at 410. Because the purchasers had plausibly alleged that “any
    procompetitive aspects of the chewables arrangement were
    outweighed by the anticompetitive harm from the no-AG
    agreement,” they were entitled to discovery. Id.
    We also rejected the district court’s alternative holding
    that “the settlement . . . would survive Actavis scrutiny and
    [was] reasonable.” Id. at 410–11. The purchasers were entitled
    40
    to discovery because they plausibly alleged the settlement was
    anticompetitive. See id. at 411. And “[i]f genuine issues of
    material fact remain[ed] after discovery, the rule-of-reason
    analysis [would be] for the finder of fact, not the court as a
    matter of law.” Id.
    Next, in Lipitor, we addressed consolidated appeals
    concerning two drugs: Lipitor and Effexor XR. See 868 F.3d
    at 239. In the Lipitor litigation, we reinstated a complaint
    alleging a generic applicant delayed entry into the market in
    exchange for the brand-name producer settling a damages
    claim for much less than the claim was really worth. See id. at
    253–54. There, the plaintiffs were a putative class of direct
    purchasers, a putative class of end payors, and several
    individual retailers. See id. at 241. They sued Lipitor’s brand-
    name producer (Pfizer Inc.) and its generic applicant (Ranbaxy
    Inc.) over a “near-global” litigation settlement addressing
    “scores of patent litigations [between Pfizer and Ranbaxy]
    around the world.” Id. at 244. One part of that settlement
    resolved Ranbaxy’s challenge to the validity and enforceability
    of Pfizer’s patents on Lipitor. See id. at 242. It provided
    Ranbaxy would delay its entry, “thus extending Pfizer’s
    exclusivity in the Lipitor market” past the expiration of its
    patents. Id. at 244–45. Another part of the settlement resolved
    Pfizer’s claim against Ranbaxy for allegedly infringing
    Pfizer’s patents on Accupril, a different drug. Id. at 243–44.
    Before settling, Pfizer had reason to believe its claim was
    worth hundreds of millions of dollars: Accupril’s annual sales
    were “over $500 million”; Ranbaxy’s generic entry
    “decimated” those sales; Pfizer sought treble damages for
    willful infringement; and the district court granted Pfizer a
    preliminary injunction and Pfizer posted a $200 million bond.
    Id. Pfizer had also “expressed confidence that it would succeed
    41
    in obtaining a substantial monetary judgment from Ranbaxy.”
    Id. at 244. Nevertheless, Pfizer agreed to settle this claim for a
    mere $1 million. See id.
    Reversing the district court, we held these two,
    otherwise-unrelated parts of the global settlement agreement
    were actionable under Actavis. See id. at 248, 253. The court
    had required the plaintiffs to plead a “reliable” monetary
    estimate of the dropped Accupril claims so it could determine
    whether the reverse payment was large and unjustified. See id.
    at 254. We rejected that requirement, explaining it “heightened
    [the] pleading standard contrary to Bell Atlantic v. Twombly,
    [
    550 U.S. 544
     (2007)], and Ashcroft v. Iqbal, [
    556 U.S. 662
    (2009)].” 
    Id.
     Moreover, we said neither Actavis nor King Drug
    “demanded [that] level of detail.” Id. at 254.
    In fact, the plaintiffs’ allegations “easily match[ed], if
    not exceed[ed], the level of specificity and detail of those in
    Actavis and King Drug.” Id. at 253, 255. As relevant here, the
    plaintiffs alleged:
    Ranbaxy launched a generic version of Pfizer’s
    brand drug          Accupril “at        risk”     [of
    infringement] . . . ; Pfizer had annual Accupril
    sales over $500 million prior to Ranbaxy’s
    launch . . . ; Pfizer brought suit and sought to
    enjoin Ranbaxy’s generic sales . . . ; the District
    Court granted the injunction halting Ranbaxy’s
    sales of generic Accupril, which the Federal
    Circuit affirmed . . . ; Pfizer posted ‘a $200
    million bond in conjunction with’ the injunction
    and informed the Court that Ranbaxy’s generic
    sales ‘decimated’ its Accupril sales . . . ; Pfizer’s
    suit was likely to be successful . . . ; and Pfizer
    42
    itself made statements          about    Ranbaxy’s
    exposure . . . .
    Id. at 253. The plaintiffs also alleged the release of the Accupril
    claims was unjustified because the “potential liability in
    Accupril ‘far exceeded’ any of Pfizer’s saved litigation costs or
    any services provided by Ranbaxy.” Id. Thus, we held the
    plaintiffs “sufficiently allege[d] that Pfizer agreed to release
    the Accupril claims against Ranbaxy, which were likely to
    succeed and worth hundreds of millions of dollars, in exchange
    for Ranbaxy’s delay in the release of its generic version of
    Lipitor.” Id.
    The defendants countered that the plaintiffs did not
    address other parts of the global litigation settlement that might
    well have justified the alleged reverse payment. But because
    the defendants had the burden of justifying a reverse payment,
    Actavis did not “require antitrust plaintiffs to come up with
    possible explanations for the reverse payment and then rebut
    those explanations.” Id. at 256. The defendants also countered
    that because Ranbaxy paid Pfizer $1 million, it was a
    commonplace settlement to which Actavis does not apply. Id.
    at 257. We said this argument “[could not] be squared with
    Actavis” because “[i]f parties could shield their settlements
    from antitrust review by simply including a token payment by
    the purportedly infringing generic manufacturer, then
    otherwise unlawful reverse payment settlement agreements
    attempting to eliminate the risk of competition would escape
    review.” Id. at 258.
    Similarly, in the Effexor XR litigation, we reinstated a
    complaint alleging a generic applicant delayed entry into the
    Effexor market in exchange for the brand-name producer’s
    agreement not to market an authorized generic—even though
    43
    the generic agreed to pay some royalties to the brand. See id.
    at 254, 247. There, the plaintiffs were a putative class of end
    payors, two third-party payors, and several retailers. See id. at
    246. They sued Effexor’s generic applicant (Teva) and brand-
    name producer (Wyeth, Inc.) over their settlement of Teva’s
    challenge to the validity and enforceability of Wyeth’s patents
    on Effexor. See id. at 247. Under the settlement, Teva and
    Wyeth agreed to vacate a district court ruling construing the
    patent claims unfavorably to Wyeth. See id. They further
    agreed that Teva could market the extended-release version of
    its generic nearly seven years before Wyeth’s patent expired,
    and its instant-release version at some point before the patent
    expired. See id. In exchange, Wyeth agreed it would not market
    authorized generics during Teva’s 180-day exclusivity period.
    See id. In return, Teva agreed to pay Wyeth royalties. See id.
    Reversing the district court, we held the no-AG
    agreement was actionable under Actavis. Given the similarities
    between King Drug and the Effexor litigation, we will not
    repeat the Effexor plaintiffs’ allegations here. See id. at 258–
    59. We mention the Effexor litigation only to highlight two
    counterarguments the defendants made. First, the defendants
    argued “the reverse payment was not large because the
    complaints failed to sufficiently allege that Wyeth would have
    released an authorized generic but for its settlement agreement
    with Teva.” Id. They explained that “Wyeth has rarely
    introduced authorized generics in response to the entry of a
    generic into one of their branded drugs’ markets.” Id. at 260.
    We rejected this argument because the mere fact that “Wyeth
    does not typically introduce authorized generics into the
    market” did not “render[] [the plaintiffs’] allegations about the
    value of the no-AG agreement implausible.” Id. at 260–61.
    Second, the defendants argued the royalties Teva agreed to pay
    44
    Wyeth justified the reverse payment. See id. We responded that
    “[a]lthough the royalty licensing provisions will perhaps be a
    valid defense, they require factual assessments, economic
    calculations, and expert analysis that are inappropriate at the
    pleading stage.” Id. at 261. In sum, we said, “Effexor plaintiffs
    need not have valued the no-AG agreement beyond their
    allegations summarized above . . . Nor were they required to
    counter potential defenses at the pleading stage.” Id. at 262
    (citation omitted).
    3. Application
    Two principles emerge from King Drug and Lipitor.
    First, a reverse payment’s legality depends mainly on its
    economic substance, not its form. The alleged reverse payment
    in Actavis was made in cash. Yet the alleged reverse payments
    in King Drug and Lipitor included two no-AG agreements and
    the settlement of a valuable damages claim. The reverse
    payment in Actavis was part of a single settlement agreement
    addressing one drug (AndroGel). Yet the reverse payment in
    the Lipitor litigation spanned two parts of a “near-global”
    litigation settlement addressing two different drugs (Lipitor
    and Accupril); and in King Drug, the challenged settlement
    addressed a drug in two different forms (chewable and tablet).
    Finally, the settlement in Actavis did not provide for cash to
    flow from the generic entrant to the brand-name producer. Yet
    the settlements in Lipitor provided for Ranbaxy to pay Pfizer
    $1 million and for Teva to pay Wyeth royalties.
    However meaningful these formalisms may be in other
    areas of the law, they are disfavored in antitrust. The purpose
    of antitrust law is “to protect consumers from arrangements
    that prevent competition in the marketplace.” King Drug, 791
    F.3d at 406 (citations omitted). Because of that unique purpose,
    45
    “economic realities rather than a formalistic approach must
    govern.” United States v. Dentsply, Inc., 
    399 F.3d 181
    , 189 (3d
    Cir. 2005). Accordingly, in King Drug and Lipitor, we read
    Actavis practically; we read it to apply to potentially
    anticompetitive reverse payments regardless of their form.
    The second principle emerging from King Drug and
    Lipitor is that the law of pleading applies to reverse-payment
    theories. To survive a motion to dismiss, a plaintiff must
    “allege facts sufficient to support the legal conclusion that the
    settlement at issue involves a large and unjustified reverse
    payment under Actavis.” Lipitor, 868 F.3d at 252 (citation
    omitted). A plaintiff can meet this pleading standard without
    describing in perfect detail the world without the reverse
    payment, calculating reliably the payment’s exact size, or pre-
    empting every possible explanation for it. Moreover, a district
    court must accept a plaintiff’s well-pleaded allegations as true.
    If a plaintiff plausibly alleges that an agreement’s
    anticompetitive effects outweigh its procompetitive virtues,
    the district court must accept that allegation and allow the
    plaintiff to take discovery. If genuine issues of material fact
    remain, the rule-of-reason analysis is for the factfinder, not the
    court.
    Applying these precedents here, the District Court erred
    by dismissing the FTC’s claims to the extent they relied on a
    reverse payment theory. The FTC plausibly alleged an
    anticompetitive reverse payment. It alleged AbbVie and Besins
    filed sham lawsuits against Teva and Perrigo in order to trigger
    the automatic, 30-month stay of FDA approval on its generic
    version of AndroGel. App. 4440 ¶ 99. But those suits “did not
    eliminate the threat of Teva’s . . . products to [AbbVie] and
    Besins’s monopoly,” because AbbVie and Teva both expected
    Teva would win the infringement suit against it and would
    46
    introduce its generic in 2012—before 30 months had passed.
    App. 4441 ¶¶ 107–09. So “[AbbVie] and Besins . . . turned to
    other ways to preserve their monopoly.” App. 4442 ¶ 111.
    Specifically, AbbVie “approached Teva to discuss a potential
    settlement” that would give “[AbbVie] time to shift sales to its
    reformulated product, AndroGel 1.62%.” Id. ¶ 112. Teva
    agreed to “drop its patent challenge and refrain from competing
    with [AndroGel] until December 2014.” App. 4443 ¶ 115. In
    exchange, it asked AbbVie to sell it a “supply of . . . TriCor.”
    Id. ¶ 113. AbbVie agreed. It authorized Teva to sell a generic
    version of TriCor, which AbbVie would supply to Teva at
    Teva’s option, for a four-year term beginning in November
    2012. Id. ¶ 117. The supply agreement provided for Teva to
    pay AbbVie the costs of production, an additional percentage
    of that cost, and a royalty. See id.
    The payment was plausibly “large.” The FTC alleges
    the supply of TriCor was “extremely valuable” to Teva. App.
    4444 ¶ 120. A previous settlement between AbbVie and Teva
    had set Teva’s entry in the TriCor market for July 2012. App.
    4442 ¶ 114. And because Teva was the first generic challenger
    to TriCor, Teva was entitled to 180 days of marketing
    exclusivity. See id. Teva was struggling to capitalize on the
    exclusivity period, though, because it could not secure FDA
    approval for its generic drug. See id. The TriCor deal enabled
    Teva “to secure generic TriCor revenues in 2012 and its first
    mover advantage.” App. 4444–45 ¶¶ 121, 124. Teva expected
    its “net sales of authorized generic TriCor sales would be
    nearly $175 million over a four-year period.” App. 4444 ¶ 120.
    In fact, Teva’s actual sales were much higher. Id. They “far
    exceed[ed]” the litigation costs that AbbVie, Besins, or Teva
    saved by settling. App. 4445 ¶ 122. And they exceeded what
    Teva had projected it was likely to earn by winning the
    47
    infringement suit and marketing its generic version of
    AndroGel. Id. ¶ 123.
    The payment was also plausibly “unjustified.” The FTC
    alleges the TriCor deal “cannot be explained as an independent
    business deal from Abbott’s perspective.” App. 4445 ¶ 125.
    AbbVie “had no incentive to increase . . . generic competition
    from Teva on another of its blockbuster products.” App. 4443
    ¶ 115. And the TriCor deal was “highly unusual” in other
    respects. App. 4445 ¶ 126. For example, it did not condition
    Teva’s launch on the launch of an independent generic. App.
    4445–46 ¶ 126. It actually accelerated generic entry, because
    “Teva’s launch triggered provisions in [AbbVie’s] agreements
    with other generic TriCor ANDA filers allowing them to
    launch their own generic[ versions].” App. 4446–47 ¶ 129.
    Moreover, the royalty terms were “significantly worse for
    [AbbVie]” than is usual in authorized-generic agreements,
    including contemporaneous agreements that AbbVie entered.
    App. 4447 ¶ 130. AbbVie expected to lose roughly $100
    million in TriCor revenues as a result of the deal, and its
    “modest income from the . . . deal did not come close to
    making up this significant loss of revenue.” Id. ¶ 132.
    Finally, it is plausible that the anticompetitive effects of
    AbbVie’s settlement with Teva outweighed any
    procompetitive virtues of the TriCor deal. The FTC alleges
    AbbVie calculated that it would sacrifice $100 million in
    TriCor sales, but that was a small fraction of the billions of
    dollars in AndroGel revenue it protected by deferring
    competition in the TTRT market for three years. See id.; cf.
    King Drug, 791 F.3d at 410 (purchasers were entitled to
    discovery because they plausibly alleged that “any
    procompetitive aspects of the chewables arrangement were
    48
    outweighed by the anticompetitive harm from the no-AG
    agreement”).
    These allegations, if true, would “support the legal
    conclusion that the settlement at issue involves a large and
    unjustified reverse payment.” Lipitor, 868 F.3d at 252. So the
    District Court erred by dismissing the FTC’s claims to the
    extent they relied on a reverse-payment theory.
    The District Court ruled that “when two agreements are
    involved . . . the court must determine separately whether each
    promotes competition.” AbbVie, 107 F. Supp. 3d at 437 (citing
    Pac. Bell Tel. Co. v. Linkline Commc’ns, Inc., 
    555 U.S. 438
    (2009)). The Court then reasoned AbbVie’s settlement with
    Teva promoted competition and was distinguishable from the
    settlement in Actavis. In Actavis, the patentee paid the alleged
    infringer. But here, the Court said, AbbVie and Besins “did not
    make any payment, reverse or otherwise, to . . . Teva.” Id. at
    436. Instead, they “simply allow[ed] Teva to enter the
    AndroGel market almost six years prior to the expiration of the
    ’894 patent.” Id. It further stated that because “Actavis
    specifically states that such an agreement does not run afoul of
    the antitrust laws,” the settlement was procompetitive and
    unactionable. Id. (citation omitted).
    The District Court next reasoned the TriCor deal
    promoted competition because “[i]t allow[ed] Teva to enter the
    cholesterol drug market with a generic product to compete with
    Abbott’s product and thus advantage[d] the purchasers of
    cholesterol drugs.” Id. The Court stressed that while
    “something of large value passed from [AbbVie] to Teva, it
    was not a reverse payment under Actavis” because AbbVie was
    “not making any payments to Teva.” Id. Rather, Teva was
    “paying [AbbVie] for the supply of TriCor.” Id. And even
    49
    though the FTC alleged AbbVie was “charging a price that is
    well below what is customary in such situations,” it did not
    allege AbbVie “agreed to sell TriCor . . . for less than its cost.”
    Id. Thus, the Court held the deal was procompetitive. Id.
    The District Court’s reasoning is unpersuasive. The
    Court cited Linkline for the proposition that if a settlement
    involves two agreements, a court must determine separately
    whether each promotes competition. But Linkline held “two
    antitrust theories cannot be combined to form a new theory of
    antitrust liability.” ZF Meritor, LLC v. Eaton Corp., 
    696 F.3d 254
    , 280 (3d Cir. 2012) (emphasis added) (citing Linkline, 
    555 U.S. at 457
    ). The FTC’s complaint does not allege such a
    combination, so Linkline does not apply.
    Nor do our precedents support the rule that “when two
    agreements are involved . . . [a] court must determine
    separately whether each promotes competition.” AbbVie, 107
    F. Supp. 3d at 437 (citation omitted). That rule violates two
    principles from our precedents. It elevates form over substance
    because companies could avoid liability for anticompetitive
    reverse payments simply by structuring them as two separate
    agreements—one in which the generic company agrees to
    delay entry until patent expiration, and the other in which the
    brand-name company agrees to split monopoly profits. In
    effect, Actavis would become a penalty for bad corporate
    lawyering instead of anticompetitive conduct. The rule also
    contradicts pleading law. Here, the FTC plausibly alleged that
    AbbVie’s settlement with Teva and the TriCor deal were
    linked. The Court had to accept that allegation as true. See
    Phillips, 
    515 F.3d at
    230–31.
    We are also unpersuaded by the District Court’s
    economic analyses of the TriCor deal and AbbVie’s settlement
    50
    with Teva. As to the TriCor deal, the Court acknowledged that
    “something of large value passed from [AbbVie] to Teva.”
    AbbVie, 107 F. Supp. 3d at 436. Yet it said that transfer could
    not be a reverse payment under Actavis because AbbVie was
    not “making any payments to Teva.” Id. This reasoning cannot
    be reconciled with King Drug, where we held a plaintiff may
    base a reverse-payment theory on any “unexplained large
    transfer of value from the patent holder to the alleged
    infringer.” King Drug, 791 F.3d at 403 (emphasis added).
    Moreover, the Court emphasized that Teva paid AbbVie
    for the supply of TriCor. But in Lipitor, we held that parties
    cannot “shield their settlements from antitrust review by
    simply including a token payment by the purportedly
    infringing generic manufacturer.” 868 F.3d at 258. Although
    Teva’s payments “will perhaps be a valid defense, they require
    factual assessments, economic calculations, and expert
    analysis that are inappropriate at the pleading stage.” Id. at 261.
    Finally, the Court intimated the result might be different if the
    FTC had alleged AbbVie agreed to sell TriCor below-cost. But
    the FTC did not have to allege the TriCor deal would appear as
    a loss on AbbVie’s balance sheets; it needed only to allege that
    through the deal, AbbVie unjustifiably transferred to Teva an
    opportunity, and the profits associated with the opportunity
    were large. See King Drug, 791 F.3d at 405 (GSK’s
    commitment not to produce an authorized generic transferred
    to Teva “the profits [GSK] would have made from its
    authorized generic”) (emphasis added). So without expressing
    an opinion whether the District Court correctly concluded the
    TriCor deal was procompetitive, we think it analyzed
    incorrectly the deal’s economic substance.
    As to AbbVie’s settlement with Teva, the District Court
    erred in concluding it was procompetitive as a matter of law.
    51
    Granted, the District Court was right that under Actavis, “an
    agreement does not run afoul of the antitrust laws” if it simply
    allows a generic company to enter a market before patent
    expiration. AbbVie, 107 F. Supp. 3d at 436 (citing Actavis, 570
    U.S. at 158 (“[Parties] may, as in other industries, settle in
    other ways, for example, by allowing the generic manufacturer
    to enter the patentee’s market prior to the patent’s expiration,
    without the patentee paying the challenger to stay out prior to
    that point.”) (emphasis added)). And it was reasonable for the
    Court to think this exception reflects the Supreme Court’s view
    that such agreements are so often procompetitive they should
    be legal per se. Still, the exception applies only if a patentee
    does not “pay[] the challenger to stay out [before patent
    expiration],” and the District Court erred in concluding this
    condition was met here. Actavis, 570 U.S. at 158. The Court
    said AbbVie “did not make any payment, reverse or otherwise,
    to . . . Teva.” AbbVie, 107 F. Supp. 3d at 436. But that finding
    rested on the Court’s erroneous ruling that it had to analyze the
    settlement separately from the TriCor deal, which even the
    Court acknowledged involved a transfer of value from AbbVie
    to Teva. Because the FTC plausibly alleged the TriCor deal
    was a reverse payment, the settlement may have been
    “something more than just an agreed-upon early entry”—it
    may have been “pay-for-delay.” King Drug, 791 F.3d at 405.
    And pay-for-delay is anticompetitive even if the delay does not
    continue past patent expiration. It was this same
    anticompetitive potential that led the Supreme Court to reject
    the scope of the patent test in Actavis. See 570 U.S. at 147–48.
    For these reasons, the District Court erred by dismissing
    the FTC’s claims to the extent they relied on a reverse-payment
    theory.
    52
    B. The District Court erred in concluding AbbVie and
    Besins’s litigation against Teva was a sham; it did
    not err in concluding the Perrigo litigation was a
    sham.
    1. Noerr-Pennington immunity
    Under the Noerr-Pennington doctrine, “[t]hose who
    petition [the] government for redress are generally immune
    from antitrust liability.” PRE, 
    508 U.S. at 56
    . That includes the
    right to sue in federal court. Cal. Motor Transp. Co. v. Trucking
    Unlimited, 
    404 U.S. 508
    , 510, 515 (1972) (holding “the right
    to petition extends to all departments of the Government,”
    including the courts).
    Noerr-Pennington immunity is not absolute.
    Wellbutrin, 868 F.3d at 148. An exception arises if a lawsuit is
    “a mere sham to cover what is actually nothing more than an
    attempt to interfere directly with the business relationships of
    a competitor.” E. R.R. Presidents Conference v. Noerr Motor
    Freight, Inc., 
    365 U.S. 127
    , 144 (1961). In PRE, the Supreme
    Court held this exception has two prongs:
    First, the lawsuit must be objectively baseless in
    the sense that no reasonable litigant could
    realistically expect success on the merits. If an
    objective litigant could conclude that the suit is
    reasonably calculated to elicit a favorable
    outcome, the suit is immunized under Noerr, and
    an antitrust claim premised on the sham
    exception must fail. Only if challenged litigation
    is objectively meritless may a court examine the
    litigant’s subjective motivation. Under this
    second part of our definition of sham, the court
    53
    should focus on whether the baseless lawsuit
    conceals an attempt to interfere directly with the
    business relationships of a competitor through
    the use of the governmental process—as
    opposed to the outcome of that process—as an
    anticompetitive weapon. This two-tiered process
    requires the plaintiff to disprove the challenged
    lawsuit’s legal viability before the court will
    entertain         evidence          of         the
    suit’s economic viability.
    
    508 U.S. at
    60–61 (internal quotation marks, citations,
    alteration, and footnote omitted). Under the objective
    baselessness prong, a “probable cause determination
    irrefutably demonstrates” a defendant’s immunity. 
    Id. at 63
    .
    Probable cause is a “reasonable belief that there is a chance that
    a claim may be held valid upon adjudication.” 
    Id.
     at 62–63
    (internal quotation marks, citations, and alterations omitted);
    see also 
    id. at 65
     (defendant was immune because “[a]ny
    reasonable [litigant] in [its] position could have believed that it
    had some chance of winning”). In determining reasonableness,
    a court should consider the state of the law at the time of a
    defendant’s suit. See 
    id. at 65
    ; see also Wellbutrin, 868 F.3d at
    150. Generally, the more “unsettled” the law is, the more
    reasonable is a belief that a claim will be held valid. PRE, 
    508 U.S. at
    64–65 (probable cause supports a claim if it is
    “arguably ‘warranted by existing law’”) (quoting FED. R. CIV.
    P. 11). Even if the law was settled against the defendant,
    however, that is not dispositive. Then, a court should ask
    whether the defendant’s claim “at the very least was based on
    an objectively ‘good faith argument for the extension,
    modification, or reversal of existing law.’” 
    Id. at 65
     (quoting
    FED. R. CIV. P. 11).
    54
    Under the subjective motivation prong, a plaintiff must
    show the defendant “brought baseless claims in an attempt to
    thwart competition (i.e., in bad faith).” Octane Fitness, LLC v.
    ICON Health & Fitness, Inc., 
    572 U.S. 545
    , 556 (2014). Some
    factors relating to a defendant’s “economic motivations” in
    bringing suit include whether the defendant was “indifferent to
    the outcome on the merits of the . . . suit, whether any damages
    for infringement would be too low to justify . . . investment in
    the suit, or whether [the defendant] had decided to sue
    primarily for the benefit of collateral injuries inflicted through
    the use of legal process.” PRE, 
    508 U.S. at
    65–66 (citation
    omitted).
    Generally, a plaintiff seeking to show the sham
    litigation exception faces “an uphill battle.” Wellbutrin, 868
    F.3d at 147. And in some respects, the hill is steeper “in the
    context of an ANDA case.” Id. at 149. “Since the submission
    of an ANDA is, by statutory definition, an infringing act, an
    infringement suit filed in response to an ANDA with a
    paragraph IV certification could only be objectively baseless if
    no reasonable person could disagree with the assertions of
    noninfringement or invalidity in the certification.” Id. (citation
    omitted). Moreover, the number of lawsuits a brand-name drug
    manufacturer files will sometimes reveal little about its
    subjective motivation for suing, because the Hatch-Waxman
    Act “incentivizes [brands] to promptly file patent infringement
    suits by rewarding them with a stay of up to 30 months if they
    do so.” Id. at 157–58 (citing 
    21 U.S.C. § 355
    (j)(5)(B)(iii)). For
    that reason, we have declined to apply a related exception to
    Noerr-Pennington immunity—serial petitioning—in the
    Hatch-Waxman context. 
    Id.
     (citing Hanover 3201 Realty, LLC
    v. Village Supermarkets, Inc., 
    806 F.3d 162
     (3d Cir. 2015)).
    55
    Yet in other respects, the ANDA context may help a
    plaintiff. The automatic, 30-month stay is a collateral injury the
    defendant’s mere use of legal process invariably inflicts. And
    though the stay ends if a court holds the defendant’s patent is
    invalid or has not been infringed, it does not otherwise depend
    on a suit’s outcome. Thus, a plaintiff may be able to show a
    defendant was indifferent to the outcome of its infringement
    suit, and the automatic, 30-month stay was an anticompetitive
    weapon the defendant tried to wield.
    In sum, applying the sham-litigation standard is a
    delicate task. The defendant’s First Amendment right “to
    petition the Government for a redress of grievances” is at stake.
    U.S. Const. amend. I. So too is congressional policy, as
    expressed in both the Hatch-Waxman Act and the antitrust
    laws. We must not “penalize a brand-name manufacturer
    whose ‘litigiousness was a product of Hatch-Waxman.’”
    Wellbutrin, 868 F.3d. at 158 (citing Kaiser Found. Health
    Plan, Inc. v. Abbott Labs, Inc., 
    552 F.3d 1033
    , 1047 (9th Cir.
    2009)). “Doing so would punish behavior that Congress sought
    to encourage.” 
    Id.
     (citation omitted). At the same time, we must
    not immunize a brand-name manufacturer who uses the Hatch-
    Waxman Act’s automatic, 30-month stay to thwart
    competition. Doing so would excuse behavior that Congress
    proscribed in the antitrust laws.
    2. Objective Baselessness
    The District Court granted the FTC summary judgment
    on sham litigation’s objective baselessness prong. We review
    that judgment de novo. See Morgan v. Covington Twp., 
    648 F.3d 172
    , 177 (3d Cir. 2011).
    56
    a. Patent law’s doctrine of equivalents,
    prosecution history estoppel, and tangentiality
    Under the doctrine of equivalents, “[t]he scope of a
    patent is not limited to its literal terms but instead embraces all
    equivalents to the claims described.” Festo VIII, 
    535 U.S. at 732
    . There are at least two reasons for this doctrine. First,
    because “the nature of language makes it impossible to capture
    the essence of a thing in a patent application,” it is unrealistic
    to expect a patentee to “capture every nuance of [his or her]
    invention or describe with complete precision the range of its
    novelty.” 
    Id. at 731
    . Second, “[i]f patents were always
    interpreted by their literal terms,” rival inventors might “defeat
    the patent” simply by making “unimportant and insubstantial”
    changes. 
    Id.
     This would diminish the scientific and artistic
    progress that the patent system seeks to foster. See 
    id.
    Although the doctrine of equivalents counters the threat
    that literal interpretation of patents poses to scientific and
    artistic progress, it creates another problem. One function of
    patents is to notify would-be inventors about the scope of the
    patentee’s property right. See 
    id.
     (“A patent holder should
    know what he owns, and the public should know what he does
    not.”). Notice allows inventors to innovate without fear that the
    patentee will sue them for infringement. See 
    id. at 732
    . But
    because the doctrine of equivalents untethers a patentee’s
    property right from a patent’s literal terms, it tends to
    undermine notice. See 
    id.
     So the doctrine risks dampening
    inventors’ innovative spirit.
    Thus, patent law must balance “the needs of patentees
    for adequate protection of their inventions” on the one hand,
    and “the needs of would-be competitors for adequate notice of
    the scope of that protection” on the other. Festo Corp. v.
    57
    Shoketsu Kinzoku Kogyo Kabushiki Co. (“Festo IX”), 
    344 F.3d 1359
    , 1385 (Fed. Cir. 2003) (Newman, J., concurring in part,
    dissenting in part).
    Recognizing the need for balance, the Supreme Court
    has limited the doctrine of equivalents. One limitation—known
    as prosecution history estoppel—applies when “the patentee
    originally claimed the subject matter alleged to infringe but
    then narrowed the claim in response to a rejection.” Festo VIII,
    
    535 U.S. at 733
    . The patentee “may not argue that the
    surrendered territory comprised unforeseen subject matter that
    should be deemed equivalent to the literal claims of the issued
    patent.” 
    Id.
     at 733–34.
    Prosecution history estoppel “ensures that the doctrine
    of equivalents remains tied to its underlying purpose.” 
    Id. at 734
    . “The doctrine of equivalents is premised on language’s
    inability to capture the essence of innovation.” 
    Id.
     But that
    premise is unsound if a patent’s prosecution history shows that
    the patentee “turned his attention to the subject matter in
    question, knew the words for both the broader and narrower
    claim, and affirmatively chose the latter.” 
    Id.
     at 734–35. In that
    case, the patentee’s competitors could reasonably infer the
    patentee’s property right extended only so far as the narrower
    claim.
    Courts use a three-part test to determine whether
    prosecution history estoppel applies:
    1. The first question in a prosecution history
    estoppel inquiry is whether an amendment filed
    in the Patent and Trademark Office (PTO) has
    narrowed the literal scope of a claim. . . . If the
    58
    amendment was not narrowing, then prosecution
    history estoppel does not apply.
    2. If the accused infringer establishes that the
    amendment was a narrowing one, then the
    second question is whether the reason for that
    amendment was a substantial one relating to
    patentability. . . . When      the       prosecution
    history record reveals no reason for the
    narrowing amendment, [the Supreme Court’s
    decision in] Warner–Jenkinson [Co. v. Hilton
    Davis Chem. Co., 
    520 U.S. 17
     (1997)] presumes
    that the patentee had a substantial reason relating
    to patentability; consequently, the patentee must
    show that the reason for the amendment was not
    one relating to patentability if it is to rebut that
    presumption. . . . In this regard, . . . a patentee’s
    rebuttal of the Warner–Jenkinson presumption is
    restricted to the evidence in the prosecution
    history record. . . . If the patentee successfully
    establishes that the amendment was not for a
    reason of patentability, then prosecution history
    estoppel does not apply.
    3. If, however, the court determines that a
    narrowing amendment has been made for a
    substantial          reason       relating      to
    patentability . . . then the third question in a
    prosecution history estoppel analysis addresses
    the scope of the subject matter surrendered by the
    narrowing amendment. . . . At that point Festo
    VIII imposes the presumption that the patentee
    has surrendered all territory between the original
    claim limitation and the amended claim
    59
    limitation. . . . The patentee may rebut that
    presumption of total surrender by demonstrating
    that it did not surrender the particular equivalent
    in question . . . Finally, if the patentee fails to
    rebut the Festo presumption, then prosecution
    history estoppel bars the patentee from relying
    on the doctrine of equivalents for the accused
    element. If the patentee successfully rebuts the
    presumption, then prosecution history estoppel
    does not apply and the question whether the
    accused element is in fact equivalent to the
    limitation at issue is reached on the merits.
    Festo IX, 
    344 F.3d at
    1366–67 (internal citations omitted)
    (emphasis added). To rebut the presumption of total surrender,
    a patentee “must show that at the time of the amendment one
    skilled in the art could not reasonably be expected to have
    drafted a claim that would have literally encompassed the
    alleged equivalent.” Festo VIII, 
    535 U.S. at 741
    .
    One way a patentee can meet this high standard is by
    showing “the rationale underlying the narrowing amendment
    [bore] no more than a tangential relation to the equivalent in
    question.” Festo IX, 
    344 F.3d at 1369
     (internal citation
    omitted). This is the tangentiality exception to prosecution
    history estoppel. In determining whether an amendment was
    tangential to an equivalent, a court does not consider the
    patentee’s subjective motivation for narrowing his claims. That
    approach would overlook “the public notice function of a
    patent and its prosecution history.” 
    Id.
     (citations omitted).
    Instead, the court considers the “objectively apparent”
    motivation as suggested by the prosecution history. 
    Id.
    Although the tangentiality exception generally cannot be
    reduced to hard-and-fast rules, see 
    id. at 1368
    , one rule is clear:
    60
    “an amendment made to avoid prior art that contains the
    equivalent in question is not tangential,” 
    id. at 1369
     (citation
    omitted).
    Like prosecution history estoppel, the tangentiality
    exception balances the needs of patentees and would-be
    competitors. It also ensures the doctrine of equivalents remains
    tied to its underlying purpose. If the rationale for an
    amendment is tangential to the alleged equivalent, “one skilled
    in the art could not reasonably be expected to have drafted a
    claim that would have literally encompassed the alleged
    equivalent.” Festo VIII, 
    535 U.S. at 741
    . Thus, a patentee’s
    competitors could not infer the patentee “turned his attention
    to the subject matter in question, knew the words for both the
    broader and narrower claim, and affirmatively chose the latter.”
    
    Id.
     at 734–35. By the same token, however, the tangentiality
    exception does not apply if the rationale for an amendment is
    to avoid prior art that contains the alleged equivalent. Then the
    prior art itself teaches the patentee how to draft a claim that
    literally encompasses the equivalent. And because the patentee
    turned his attention to the prior art in order to avoid it, the
    patentee’s competitors could infer the patentee affirmatively
    chose the narrower claim.
    b. The District Court erred in concluding AbbVie
    and Besins’s suit against Teva was objectively
    baseless.
    Teva’s paragraph IV notice asserted that because its gel
    used the penetration enhancer isopropyl palmitate instead of
    isopropyl myristate, the gel did not literally infringe the ’894
    patent. It also argued the ’894 patent’s prosecution history
    estopped AbbVie and Besins from claiming infringement on
    61
    the ground that isopropyl palmitate is equivalent to isopropyl
    myristate.
    On appeal, AbbVie and Besins concede the October
    2001 amendment—which narrowed the patent application’s
    claim 1 from all penetration enhancers to a list of 24 not
    including isopropyl palmitate—was narrowing and was made
    for a substantial reason related to patentability. See Festo IX,
    
    344 F.3d at 1366
     (citation omitted). Thus, we presume AbbVie
    and Besins “surrendered all territory between the original
    claim limitation and the amended claim limitation,” which
    includes isopropyl palmitate. 
    Id.
     at 1367 (citing Festo VIII, 
    535 U.S. at 740
    ). To rebut this presumption, AbbVie and Besins
    would have had to show that “at the time of the [October 2001]
    amendment one skilled in the art could not reasonably be
    expected to have drafted a claim that would have literally
    encompassed [isopropyl palmitate].” Festo VIII, 
    535 U.S. at 741
    . AbbVie and Besins argue they could make this showing.
    They contend the reason for the October 2001 amendment was
    to overcome Mak’s use of oleic acid—not Allen’s disclosure
    of isopropyl palmitate or other penetration enhancers. So, they
    claim, the rationale for the amendment was tangential to
    isopropyl palmitate. See Festo IX, 
    344 F.3d at 1369
     (internal
    citation omitted).
    The FTC has not shown that no reasonable litigant in
    AbbVie and Besins’s position would believe it had a chance of
    winning. See PRE, 
    508 U.S. at 65
    . AbbVie and Besins’s
    argument has support in the prosecution history record. Allen
    disclosed isopropyl myristate—the penetration enhancer used
    in AndroGel—and yet the October 2001 amendment retained
    isopropyl myristate. Moreover, AbbVie and Besins gave three
    reasons why the prior art did not suggest combining Mak and
    Allen. Every one of those reasons distinguished the claimed
    62
    penetration enhancers from oleic acid, the penetration
    enhancer Mak used. Finally, expert testimony could have
    supported AbbVie and Besins’s interpretation of the
    prosecution history. See Festo IX, 
    344 F.3d at
    1369–70. The
    District Court heard testimony from Dr. Jonathan Hadgraft,
    Emeritus Professor of Biophysical Chemistry at University
    College London School of Pharmacy. He testified the
    “chemical and functional differences identified by the patent
    applicants in their rationale for distinguishing the penetration
    enhancers listed in the claims in the [October 2001]
    amendment . . . from oleic acid would apply equally to
    isopropyl palmitate.” App. 4511. For these reasons, AbbVie
    and Besins could reasonably have argued that at the time of the
    October 2001 amendment, one skilled in the art could not
    reasonably be expected to have drafted a claim that would have
    literally encompassed isopropyl palmitate. See Festo VIII, 
    535 U.S. at 741
    . In that case, prosecution history estoppel would
    not apply. See 
    id.
    The FTC presents three main counterarguments.
    First, the District Court concluded the rationale for the
    October 2001 amendment was not tangential to isopropyl
    palmitate because “[i]f AbbVie and Besins merely sought to
    relinquish oleic acid and no other penetration enhancer in
    October 2001, they easily could have said so.” AbbVie, 
    2017 WL 4098688
    , at *8. Relatedly, the FTC argues that because
    AbbVie’s “oleic acid rationale does not explain the entire
    [October 2001] amendment,” the rationale for the amendment
    was not tangential to isopropyl palmitate as a matter of law.
    FTC Resp. Br. 39–40 (citing Felix v. Am. Honda Motor Co.,
    
    562 F.3d 1167
    , 1184 (Fed. Cir. 2009) and Amgen Inc. v.
    Hoechst Marion Roussel, Inc., 
    457 F.3d 1293
    , 1315 (Fed. Cir.
    2006)). But negative claim limitations of the sort the Court
    63
    mentioned are usually impermissible. See In re Schechter, 
    205 F.2d 185
    , 188 (C.C.P.A. 1953). Put differently, AbbVie and
    Besins probably could not have claimed all penetration
    enhancers “except oleic acid.” And the law is not as well-
    settled as the FTC suggests. Granted, in the cases the FTC cites,
    the Federal Circuit held the tangentiality exception did not
    apply in part because the patentee’s rationale failed to explain
    the entire amendment. But because the Federal Circuit has
    refused to reduce the tangentiality exception to hard-and-fast
    rules, see Festo IX, 
    344 F.3d at 1368
    , a reasonable litigant in
    AbbVie and Besins’s position would not necessarily see those
    decisions as foreclosing its claim.
    More persuasive is the District Court’s reasoning that
    the October 2001 amendment sought to overcome the Allen
    prior art, which “listed isopropyl palmitate as one of five
    penetration enhancers.” AbbVie, 
    2017 WL 4098688
    , at *8. The
    FTC also argues Allen’s disclosure of isopropyl palmitate
    “precludes a tangentiality finding,” because “an amendment
    made to avoid prior art that contains the equivalent in question
    is not tangential.” FTC Resp. Br. 38 (quoting Festo IX, 
    344 F.3d at 1369
     (Pioneer Magnetics, Inc. v. Micro Linear Corp.,
    
    330 F.3d 1352
    , 1357 (Fed. Cir. 2003))). This argument is more
    persuasive because the rule the FTC cites is a well-settled
    exception to the Federal Circuit’s case-by-case approach to the
    tangentiality exception. See 
    id.
     But the argument is not so
    strong as to make the suits objectively unreasonable. AbbVie
    and Besins could reasonably have argued the rule did not apply
    or should be modified, because even though Allen disclosed
    isopropyl palmitate, AbbVie and Besins made the October
    2001 amendment “to avoid” Mak’s use of oleic acid, not
    Allen’s disclosure of isopropyl palmitate or other penetration
    enhancers. PRE, 
    508 U.S. at 65
     (quoting FED. R. CIV. P. 11).
    64
    Thus, a reasonable litigant in AbbVie and Besins’s position
    would not necessarily see this rule as foreclosing its claim.
    Finally, the District Court reasoned that the “entire
    prosecution history”—not just the October 2001 amendment—
    is relevant to determine whether estoppel applies. AbbVie,
    
    2017 WL 4098688
    , at *6 (citing Wang Labs, Inc. v. Toshiba
    Corp., 
    993 F.2d 858
    , 867 (Fed. Cir. 1993) and Tex.
    Instruments, Inc. v. U.S. Int’l Trade Comm’n, 
    988 F.2d 1165
    ,
    1174 (Fed. Cir. 1993)). Likewise, the FTC argues that “[e]ven
    if the October 2001 amendment had not excluded isopropyl
    palmitate, the later amendments would have.” FTC Resp. Br.
    41. And those amendments “plainly could not have been
    intended to distinguish oleic acid, which (as AbbVie concedes)
    had already been excluded by the October 2001 amendment.”
    FTC Resp. Br. 42. Again, the law is not as well-settled as the
    FTC would have us believe. AbbVie and Besins could
    reasonably have argued only the October 2001 amendment was
    relevant under existing law. See Festo IX, 
    344 F.3d at 1369
    (tangentiality “focuses on the patentee’s objectively apparent
    reason for the narrowing amendment”) (emphasis added); see
    also Felix, 
    562 F.3d at
    1182–83; PRE, 
    508 U.S. at
    64–65
    (probable cause supports a claim if it is “arguably ‘warranted
    by existing law’”) (quoting FED. R. CIV. P. 11).
    Thus, the District Court erred in concluding AbbVie and
    Besins’s suit against Teva was objectively baseless.
    Accordingly, we will not consider the subjective motivation
    prong as to Teva. See PRE, 
    508 U.S. at
    60–61.
    65
    c. The District Court did not err in concluding
    AbbVie and Besins’s suit against Perrigo was
    objectively baseless.
    Perrigo’s first paragraph IV notice asserted that because
    its gel used the penetration enhancer isostearic acid instead of
    isopropyl myristate, the gel did not literally infringe the ’894
    patent. It also explained that the ’894 patent’s prosecution
    history estopped AbbVie and Besins from claiming
    infringement on the ground that isostearic acid is equivalent to
    isopropyl myristate.
    AbbVie and Besins concede the December 2001
    amendment narrowed the patent application’s claims from 24
    penetration enhancers including isostearic acid to isopropyl
    myristate. But they argue it was not for a substantial reason
    relating to patentability and, if it was, the rationale for the
    amendment was tangential to isostearic acid.
    No reasonable litigant in AbbVie and Besins’s position
    would believe it had a chance of winning on these arguments.
    First, AbbVie and Besins argue the December 2001
    amendment was not for a substantial reason relating to
    patentability, both because “the claims pending at the time of
    the December 2001 amendment . . . were never rejected or
    threatened with rejection,” and because they “amended the
    claims in December 2001 to expedite the timing of patent
    protection.” AbbVie Br. 47–48. This argument is untenable.
    “[A] voluntary amendment may give rise to prosecution
    history estoppel.” Festo IX, 
    344 F.3d at 1366
     (internal
    quotations and citation omitted). And expediting prosecution is
    not a legitimate basis on which to avoid prosecution history
    estoppel. See Biogen, Inc. v. Berlex Labs., Inc., 
    318 F.3d 1132
    ,
    1142 (Fed. Cir. 2003) (“[C]laims that were deliberately limited
    66
    in order to expedite prosecution by avoiding examination
    cannot regain that scope for infringement purposes.”) (citing
    Genentech, Inc. v. Wellcome Found. Ltd., 
    29 F.3d 1555
    , 1564
    (Fed. Cir. 1994)). Regardless, no court would hold the
    December 2001 amendment’s purpose was to expedite
    prosecution. “[A] patentee’s rebuttal of the Warner–Jenkinson
    presumption” that a narrowing amendment was made for a
    substantial reason relating to patentability “is restricted to the
    evidence in the prosecution history record.” Festo IX, 344 at
    1367 (citations omitted). But nothing in the prosecution history
    supports AbbVie and Besins’s claim that the December 2001
    amendment’s purpose was to expedite prosecution. AbbVie
    and Besins cite the amendment’s concluding sentence, which
    reads: “The Examiner is urged to call the undersigned with any
    questions or to otherwise expedite prosecution.” App. 1095
    (emphasis added). But that boilerplate statement reveals
    nothing about the amendment’s purpose. AbbVie and Besins
    also argue that even if the purpose to expedite prosecution did
    not appear in the prosecution history, it was clear “as a matter
    of law.” Abbvie Br. 48 n.3. This argument fails even as an
    argument “for the extension, modification, or reversal of
    existing law.” PRE, 
    508 U.S. at 65
     (quoting FED. R. CIV. P. 11).
    As we have explained, the rule that a patentee’s rebuttal of the
    Warner-Jenkinson presumption is restricted to the prosecution
    history is fundamental; it balances “the needs of patentees for
    adequate protection of their inventions” on the one hand, and
    “the needs of would-be competitors for adequate notice of the
    scope of that protection” on the other. Festo IX, 
    344 F.3d at 1385
     (Newman, J., concurring in part, dissenting in part).
    To the extent the prosecution history reveals the
    December 2001 amendment’s purpose, it shows the
    amendment related to patentability. In June 2001, the patent
    67
    examiner rejected the application’s claim 1. In October 2001,
    AbbVie and Besins unsuccessfully tried to overcome the
    rejection by amending the application. Their attorneys then had
    an interview with the patent examiner in which she opined that
    the application’s claims to isopropyl myristate were allowable
    over the prior art. As the District Court found, these facts were
    “a telling signal to any reasonable person that patentability
    required the narrowing of any claim so that it disclosed
    isopropyl myristate at a particular concentration as the sole
    penetration enhancer.” AbbVie, 
    2017 WL 4098688
    , at *11.
    AbbVie and Besins followed that signal in their December
    2001 amendment: in the amendment’s conclusion—
    immediately before the boilerplate discussed above—they
    sought “reconsideration and withdrawal of the outstanding
    rejections and allowance of the . . . claims.” App. 1095.
    (emphasis added).
    AbbVie and Besins also argue the rationale for the
    December 2001 amendment was to overcome Mak’s use of
    oleic acid, so it was tangential to isostearic acid. That argument
    contradicts the prosecution history. AbbVie and Besins
    narrowed their claims to exclude oleic acid in October 2001,
    so that could not have been the purpose of the December 2001
    amendment.
    AbbVie and Besins counter that the District Court erred
    by “assessing . . . whether [they] had a winning case against
    Perrigo” instead of whether a reasonable litigant would believe
    it had a chance of winning. AbbVie Br. 50. We disagree. While
    the Court did assess whether they had a winning case, it also
    assessed whether a reasonable litigant would believe it had a
    chance of winning. See AbbVie, 
    2017 WL 4098688
    , at *9
    (“[A]ny reasonable person who reads the prosecution history
    of the ’894 patent can reach no other conclusion than that the
    68
    defendants have purposefully            and    not    tangentially
    excluded . . . isostearic acid.”).
    Finally, AbbVie and Besins argue “[t]he favorable
    settlements [they] obtained in both suits foreclose the
    proposition that no reasonable person could have perceived a
    chance of success for the infringement claims.” AbbVie Br.
    50–51. They note Perrigo agreed to “continued market
    exclusivity for AndroGel until late 2014—‘far beyond the
    maximum 30-month Hatch-Waxman stay[]’ that would have
    applied had the lawsuits continued.” 
    Id. at 51
    . We think that,
    ordinarily, settlement on terms favorable to a plaintiff suggests
    a suit is not objectively baseless. See, e.g., Theme Promotions,
    Inc. v. News Am. Mktg. FSI, 
    546 F.3d 991
    , 1008 (9th Cir.
    2008); New W., L.P. v. City of Joliet, 
    491 F.3d 717
    , 722 (7th
    Cir. 2007). But that is not the situation here. To start, the
    settlement with Perrigo was not especially favorable to AbbVie
    and Besins. AbbVie paid Perrigo $2 million as reasonable
    litigation expenses and agreed to let Perrigo enter the market
    for AndroGel at the same time as Teva—almost six years
    before the ’894 patent expired. Even if the settlement was
    favorable, however, that is not dispositive, since the record is
    clear that Perrigo did not settle because it doubted its litigation
    position. In Perrigo’s paragraph IV notice, it opined that “a
    lawsuit asserting the ’894 patent . . . would be objectively
    baseless and a sham, brought in bad faith for the improper
    purpose of, inter alia, delaying Perrigo’s NDA approval.”
    AbbVie, 329 F. Supp. 3d at 114. And Perrigo’s assistant general
    counsel estimated it had a 75 percent chance of victory, which,
    given the uncertainties inherent in litigation, is a strong
    probability. Thus, as the District Court found, Perrigo settled
    for reasons “independent of the merits of [AbbVie and
    69
    Besins’s] claims,” including especially the cost of litigating.
    Id. at 123.
    Thus, the District Court did not err in concluding
    AbbVie and Besins’s suit against Perrigo was objectively
    baseless.
    3. The District Court did not err in concluding AbbVie
    and Besins’s suit against Perrigo met sham litigation’s
    subjective motivation prong.
    The District Court’s evaluation of the subjective
    motivation prong of the sham litigation test required it to make
    findings of fact. We review those factual findings under the
    deferential clear-error standard. See VICI Racing, LLC v. T-
    Mobile USA, Inc., 
    763 F.3d 273
    , 282–83 (3d Cir. 2014). A
    finding is clearly erroneous when “although there is evidence
    to support it, the reviewing court on the entire evidence is left
    with the definite and firm conviction that a mistake has been
    committed.” United States v. U.S. Gypsum Co., 
    333 U.S. 364
    ,
    395 (1948). “Where there are two permissible views of the
    evidence, the factfinder’s choice between them cannot be
    clearly erroneous.” Anderson v. City of Bessemer City, N.C.,
    
    470 U.S. 564
    , 574 (1985) (citations omitted). Clear error
    review exists to prevent a reviewing court from
    “overstep[ping] the bounds of its duty . . . [by] duplicat[ing]
    the role of the lower court.” 
    Id.
     at 573 (citing FED. R. CIV. P.
    52(a)).
    The District Court ruled the FTC “must prove [by clear
    and convincing evidence] that defendants had actual
    knowledge that the patent infringement suits here were
    70
    baseless.” AbbVie, 329 F. Supp. 3d at 120. 3 In support, it cited
    City of Columbia v. Omni Outdoor Advertising, Inc., 
    499 U.S. 365
     (1991), in which the Supreme Court said “[a] classic
    example [of sham litigation] is the filing of frivolous objections
    to the license application of a competitor, with no expectation
    of achieving denial of the license but simply in order to impose
    expense and delay.” 
    Id. at 380
     (emphasis added).
    The District Court then determined certain evidence
    submitted to show AbbVie and Besins’s knowledge was not
    probative. This evidence included: (1) Solvay’s 2009 press
    release, because “[n]one of the in-house AbbVie attorneys
    identified as the decision-makers regarding the 2011 suit[]
    against . . . Perrigo was previously employed by Solvay or
    Unimed,” AbbVie, 329 F. Supp. 3d at 121; (2) business
    planning       documents,    because       “none      of      the[]
    documents . . . was created by or influenced anyone who
    played a role in the decision[] to sue . . . Perrigo,” id. at 122;
    3
    In a footnote in its response brief, the FTC challenges
    the District Court’s requirement of proof by clear-and-
    convincing evidence. We have not decided what standard of
    proof applies to sham litigation’s subjective motivation prong.
    Cf. Wellbutrin, 868 F.3d at 148 n.18 (referencing the objective
    baselessness prong). But in discussing Noerr-Pennington cases
    involving Section 1983 claims, we have explained that a higher
    standard of proof is needed in Noerr-Pennington cases
    involving patent disputes. See Campbell v. Pa. Sch. Bd. Ass’n,
    
    2020 WL 5049051
    , at *7 (3d Cir. 2020). We need not adopt that
    dicta today because “arguments raised in passing (such as, in a
    footnote), but not squarely argued,” are forfeited on appeal.
    John Wyeth & Bro. Ltd. v. CIGNA Intern. Corp., 
    119 F.3d 1070
    ,
    1076 n.6 (3d Cir. 1997).
    71
    (3) the settlement agreements, because “[p]arties often settle
    litigation for a variety of reasons independent of the merits of
    the claims,” id. at 123; and (4) AbbVie’s citizen petitions,
    because the petitions “were [all] found to be at least partially
    meritorious,” id. 4
    Finally, the Court “zoom[ed] in on the individuals at
    AbbVie and Besins who made the decision[] to file the
    infringement action[] against . . . Perrigo [to] discern what
    these individuals knew.” Id. at 123–24. Because AbbVie and
    Besins invoked attorney-client privilege and the attorney work
    product doctrine, the trial produced “no direct evidence of
    [these individuals’] subjective intent.” Id. at 125. The Court
    refused to draw any negative inference as a result. See id.
    Instead, it considered “the surrounding circumstances and the
    natural and probable consequences of [AbbVie and Besins’s]
    knowing acts.” Id. The Court considered two pieces of
    circumstantial evidence. First, because AbbVie and Besins’s
    decisionmakers were all “very experienced patent attorneys”
    who had reviewed Perrigo’s paragraph IV notices and
    consulted outside counsel, they knew the lawsuit against
    Perrigo was objectively baseless. Id. at 126. And second, the
    decisionmakers—some of whom were long-time employees—
    “knew the extensive financial benefits to [AbbVie and Besins]
    if generic versions of AndroGel were kept or delayed from
    entry into the market.” Id. The Court concluded “[t]he only
    4
    AbbVie and Besins argue the District Court erred by
    not considering the business planning documents and
    settlement agreements. The FTC argues the Court erred by not
    considering Solvay’s 2009 press release. The Court correctly
    concluded that none of this evidence is probative of the
    decisionmakers’ subjective motivations.
    72
    reason for the filing of these lawsuits was to impose expense
    and delay on . . . Perrigo so as to block [its] entry into the
    TTRT market.” Id.
    AbbVie and Besins argue the District Court erred by
    merging sham litigation’s objective baselessness and
    subjective motivation prongs. They claim “the relevant inquiry
    under the subjective element [is] whether [the] decisionmakers
    actually believed the lawsuits had no possibility of success”
    and were therefore “subjective[ly] baseless[].” AbbVie Br. 56.
    The FTC counters that the District Court required it to
    prove more than was necessary, because the subjective inquiry
    “has nothing to do with what a litigant knew or should have
    known regarding the merits of its claims.” FTC Resp. Br. 57
    (quoting Kilopass Tech., Inc. v. Sidense Corp., 
    738 F.3d 1302
    ,
    1313 (Fed. Cir. 2013)). Instead, the FTC argues, what matters
    is the intent to “thwart competition.” 
    Id.
     (citing Octane Fitness,
    572 U.S. at 556).
    We agree with the FTC that the District Court applied
    an improper legal standard. The ultimate inquiry under sham
    litigation’s subjective prong is a defendant’s subjective
    motivation, not its subjective belief about the merits of its
    claims. See PRE, 
    508 U.S. at
    60–61; Octane Fitness, 572 U.S.
    at 556. Thus, the term “subjective baselessness” is a misnomer.
    That said, we disagree that the inquiry into a defendant’s
    motivation has “nothing to do” with a defendant’s belief about
    the merits of its claims. But cf. Kilopass, 738 F.3d at 1313.
    Evidence that a defendant knew its claims were meritless may
    help a plaintiff to show a defendant was “indifferent to the
    outcome on the merits of the . . . suit” and “decided to sue
    primarily for the benefit of collateral injuries inflicted through
    the use of legal process.” PRE, 
    508 U.S. at 65
     (citation
    73
    omitted). It is therefore unsurprising that evidence of a
    defendant’s belief about the merits of its claims appears in a
    “classic example” of sham litigation, Omni, 
    499 U.S. at 380
    , or
    that it appeared in this case. So while evidence of a defendant’s
    belief about the merits of its claims may be relevant to
    determining a defendant’s motivation, it is not required in
    every case. In short, a defendant can be ambivalent about the
    merits while filing litigation for an improper purpose (i.e., in
    bad faith).
    We also reject AbbVie and Besins’s argument that the
    District Court improperly merged sham litigation’s objective
    baselessness and subjective motivation prongs. That argument
    assumes the two prongs are distinct, but they are interrelated.
    To see how, consider the following syllogism: (1) A lawsuit is
    objectively baseless if “no reasonable litigant could
    realistically expect success on the merits,” PRE, 
    508 U.S. at 60
    ; (2) and a litigant who files an objectively baseless lawsuit
    must have had some subjective motivation for suing; (3) but
    because the lawsuit was objectively baseless, the litigant’s
    subjective motivation could not have been success on the
    merits, unless the litigant was unreasonable; (4) thus, a
    reasonable litigant’s subjective motivation for filing an
    objectively baseless lawsuit must be something besides success
    on the merits. The District Court merely applied this syllogism.
    It first held that AbbVie and Besins’s lawsuits were objectively
    baseless. It then reasoned that because AbbVie and Besins’s
    decisionmakers were all very experienced patent attorneys who
    had reviewed Perrigo’s paragraph IV notices and consulted
    outside counsel, they knew the lawsuits were baseless. Finally,
    it reasoned that because the decisionmakers knew the lawsuits
    were baseless, they must have been motivated by something
    74
    other than success on the merits. The District Court’s logic is
    valid.
    AbbVie and Besins respond that, under the District
    Court’s analysis, “in virtually every Hatch-Waxman suit in
    which a court finds objective baselessness, a finding of
    subjective baselessness would necessarily follow.” AbbVie Br.
    57. Not so. The syllogism the Court applied establishes only
    that a reasonable litigant’s subjective motivation must have
    been something besides success on the merits. It does not
    necessarily follow that the motivation was to thwart
    competition. For example, a company might file an objectively
    baseless lawsuit because it subjectively (though unreasonably)
    expected the lawsuit to succeed. In that case, a finding of
    “subjective baselessness” would not necessarily follow from a
    finding of objective baselessness.
    AbbVie and Besins next argue that the circumstantial
    evidence the Court considered was insufficient to establish the
    subjective motivation prong by clear and convincing evidence,
    especially given the presumption that “the assertion of a duly
    granted patent is made in good faith.” AbbVie Br. 56 (quoting
    C.R. Bard, Inc. v. M3 Sys., Inc., 
    157 F.3d 1340
    , 1369 (Fed. Cir.
    1998)).
    We disagree. Because AbbVie and Besins invoked
    attorney-client privilege and the attorney work product
    doctrine, the Court properly considered the surrounding
    circumstances and the natural and probable consequences of
    AbbVie and Besins’s intentional acts to make its findings. Cf.
    Howard Hess Dental Labs. Inc. v. Dentsply Intern., Inc., 
    602 F.3d 237
    , 257–58 (3d Cir. 2010) (“Specific intent in the
    antitrust context may be inferred from a defendant’s unlawful
    conduct.”) (citing Advo, Inc. v. Phila. Newspapers, Inc., 51
    
    75 F.3d 1191
    , 1199 (3d Cir. 1995)). The Court noted that AbbVie
    and Besins’s decisionmakers were all experienced patent
    attorneys who had reviewed Perrigo’s paragraph IV notices
    and consulted outside counsel. They also knew the extensive
    financial benefits AbbVie and Besins would receive if generic
    versions of AndroGel were kept or delayed from entry into the
    market. Especially given the collateral injury the Hatch-
    Waxman Act’s 30-month stay invariably inflicts, the Court was
    permitted to conclude from this evidence that in filing an
    objectively baseless lawsuit against Perrigo, the
    decisionmakers were motivated not to assert a patent in good
    faith, but to impose expense and delay on Perrigo to delay its
    entry into the TTRT market. Anderson, 
    470 U.S. at 574
    .
    Besins lastly argues the District Court clearly erred
    because the FTC presented “no evidence” about “who in 2011
    were the decisionmakers at Besins . . . and what those people
    knew.” Besins Br. 14. It also argues the trial testimony “neither
    addressed nor established who made the 2011 decisions to sue.
    Nor did the FTC ask [Besin’s in-house counsel] MacAllister
    who at Besins made those decisions.” Id. at 15.
    The District Court did not clearly err. MacAllister
    testified at trial that: he is a former patent examiner; he was
    “the highest ranking attorney in-house at Besins,” App. 3672;
    he “oversaw the global intellectual property group,” id.; and he
    “advised on litigations concerning Besins’[s] patents,” App.
    3673. An attorney for the FTC asked MacAllister whether he
    was “involved in the decision to file patent litigation against
    Perrigo in 2011.” App. 3690. He responded that he conferred
    with AbbVie’s in-house counsel “related to the decision
    whether or not to proceed with the lawsuit,” and that Besins’s
    outside counsel provided him and others with advice that
    “informed our decision as to whether or not to proceed with the
    76
    lawsuit.” Id. It was “permissible” for the Court to conclude
    from this testimony that MacAllister decided to sue on Besins’s
    behalf. Anderson, 
    470 U.S. at 574
    .
    Thus, the District Court did not err in concluding
    AbbVie and Besins’s suit against Perrigo concealed an attempt
    to interfere directly with its business relationships, through the
    use of the governmental process—as opposed to the
    outcome of that process—as an anticompetitive weapon.
    C. The District Court did not err in concluding
    AbbVie and Besins had monopoly power in the
    relevant market.
    To prove monopolization, a plaintiff must establish that
    the defendant had monopoly power in the relevant market. See
    Broadcom Corp. v. Qualcomm Inc., 
    501 F.3d 297
    , 306–07 (3d
    Cir. 2007). Monopoly power is “the ability to control prices
    and exclude competition in a given market.” 
    Id.
    The FTC relied on indirect evidence to establish
    AbbVie’s monopoly power. “To support a claim of monopoly
    power through indirect evidence, [a plaintiff] must show that
    (1) [d]efendants had market power in the relevant market and
    (2) that there were barriers to entry into the market.” Mylan,
    838 F.3d at 435. Market power is “the ability to raise prices
    above those that would otherwise prevail in a competitive
    market.” Gordon v. Lewistown Hosp., 
    423 F.3d 184
    , 210 (3d
    Cir. 2005) (citation omitted). A court can infer market power
    from a market share significantly greater than 55 percent. See
    Dentsply, 
    399 F.3d at 187
    . “Other germane factors include the
    size and strength of competing firms, freedom of entry, pricing
    trends and practices in the industry, ability of consumers to
    substitute comparable goods, and consumer demand.” 
    Id.
     A
    77
    defendant’s ability to maintain market share is also relevant.
    See 
    id.
     at 188–89 (citing United States v. Syufy Enters., 
    903 F.2d 659
    , 665–66 (9th Cir. 1990)). Barriers to entry include
    “regulatory requirements, high capital costs, or technological
    obstacles, that prevent new competition from entering a market
    in response to a monopolist’s supracompetitive prices.”
    Broadcom Corp., 
    501 F.3d at 307
    .
    The parties agreed that the relevant geographic market
    is the United States, so the District Court had to define only the
    product market.
    To determine if two products are in the same
    market, we ask if they are readily substitutable
    for one another, an inquiry that requires us to
    assess the reasonable interchangeability of use
    between a product and its substitute. We also
    look to their cross-elasticity of demand, which is
    defined as a relationship between two products,
    usually substitutes for each other, in which a
    price change for one product affects the price of
    the other.
    Mylan, 838 F.3d at 435–36 (internal quotation marks, citations,
    and alterations omitted); see also SmithKline Corp. v. Eli Lilly
    & Co., 
    575 F.2d 1056
    , 1064 (3d Cir. 1978) (requiring
    “significant” cross-elasticity of demand).
    The District Court defined the product market as “the
    market for all TTRTs, that is all transdermal testosterone
    replacement therapies within the United States.” AbbVie, 329
    F. Supp. 3d at 134. It found that all TTRTs were “reasonably
    interchangeable” and exhibited cross-elasticity of demand. See
    id. at 131–32. By contrast, in considering the market for
    78
    TTRTs and injectables, the Court found that while TTRTs
    were reasonably interchangeable with injectables, they
    exhibited “little cross-elasticity of demand.” Id. at 133. It relied
    on the following evidence:
    • Injectables are much cheaper than AndroGel, yet
    AbbVie has “consistently raised AndroGel’s wholesale
    acquisition cost.”
    • AbbVie executive James Hynd testified that AbbVie
    does not price AndroGel against injectables and did not
    offer rebates to match the price of injectables.
    • AndroGel’s Director of Marketing Frank Jaeger
    testified that AbbVie did not consider injectables to be
    competition. He identified other TTRTs “such as
    Axiron, Fortesta, and Testim as AndroGel’s
    competitors.”
    Id. The Court discounted an internal AbbVie document stating
    that a rise in AndroGel’s copay was correlated with an increase
    in injectables’ sales. It explained that factors besides price
    drove the correlation, including “patient preference, the
    existence of [specialized testosterone clinics], and the
    disproportionate negative publicity testosterone gels received
    after reports associating TTRTs with heightened
    cardiovascular risk.” Id. For the same reason, the Court also
    discounted a “patient switching study” that AbbVie and
    Besins’s expert conducted. See id.
    The District Court also found that AbbVie and Besins
    had “a dominant share of the TTRT market in the relevant
    period and that significant barriers existed for entry into that
    79
    market.” Id. at 136. It relied on the following evidence in
    finding that AbbVie and Besins had a dominant share:
    • “In the TTRT market, AndroGel was by far the most-
    prescribed product and was widely-recognized as the
    ‘market leader’ from before 2011 through 2014.”
    • In April 2011 (when AbbVie and Besins sued Teva),
    AndroGel’s share of the TTRT market was 71.5
    percent. In October 2011 (when they sued Perrigo),
    AndroGel’s share was 63.6 percent. AndroGel’s share
    “remained above 60[ percent] until the end of 2014,
    when Perrigo’s generic 1% testosterone product entered
    the market.”
    • No other TTRT product ever held 10 percent or more of
    the market during this period, and AndroGel’s market
    share was always more than three times larger than the
    market share of any of its brand-name competitors.
    • “AbbVie was able to maintain its share of the TTRT
    market with a profit margin of over 65[ percent]” during
    this period, “even with huge rebates.”
    • AbbVie increased the wholesale acquisition cost for
    AndroGel during this period.
    Id. at 134–35. Finally, the Court found significant barriers to
    entry because “a generic drug has significant capital, technical,
    regulatory, and legal barriers to overcome.” Id. at 135–36. It
    explained that, although three brand-name TTRT products
    (i.e., Fortesta, Axiron, and Vogelxo) entered the market
    between 2011 and 2014, “they did not pose significant
    80
    competition to [AbbVie and Besins’s] monopolistic conduct”
    because they held a low market share. Id. at 136.
    AbbVie and Besins claim the District Court clearly
    erred by excluding injectables from the product market for two
    reasons. First, the record contained “voluminous evidence,
    including expert testimony, showing substantial cross-
    elasticity between topical TRTs and injectables.” AbbVie Br.
    64. And second, the FTC’s expert conceded “some cross-
    elasticity . . . between AndroGel and injectables” and
    “presented no cross-elasticity study to support” the market the
    Court defined. Id. at 64–65 (citation omitted). In sum, AbbVie
    and Besins argue that the Court “defined the relevant antitrust
    market in terms no expert had endorsed.” Id. at 29.
    We disagree for several reasons. First, the mere fact that
    the record contained evidence tending to show substantial
    cross-elasticity between topical TRTs and injectables does not
    mean the Court clearly erred. AbbVie employees conceded at
    trial that AndroGel does not compete against injectables, so it
    was at least “permissible” for the Court to exclude injectables
    from the product market. Anderson, 
    470 U.S. at 574
    . Second,
    while the FTC’s expert conceded some cross-elasticity
    between AndroGel and injectables, he did not concede
    significant cross-elasticity, which is required to find clear
    error. See SmithKline Corp., 
    575 F.2d at 1064
    . Finally, the
    FTC’s expert did study whether AndroGel and injectables
    exhibited cross-elasticity of demand. App. 3862 (“I looked at
    the data on what happened over time to a number of injectable
    prescriptions and looked to see whether significant changes in
    the price of the transdermal products, whether we could see an
    effect on injectables . . . [The data] indicates a low cross-
    elasticity of demand between AndroGel and injectables . . . .”).
    While the expert did not “endorse” the market the Court
    81
    ultimately defined, his testimony supported the Court’s market
    definition, and the FTC argued for that definition in the
    alternative. App. 3491 (“[E]ven if the relevant market included
    all other TRT products except injections, the market share has
    established that AndroGel still possessed monopoly power.”).
    AbbVie and Besins also contend the District Court
    committed legal error by misapplying the legal standard as to
    the existence of market power and barriers to entry. They argue
    the Court gave dispositive weight to market share data and
    Hatch-Waxman’s technical and regulatory requirements while
    ignoring real-world evidence. They emphasize that three new
    competing brand-name TTRTs entered the market between
    2011 and 2014. We are unpersuaded.
    The Court did not give dispositive weight to market
    share data; it also considered consumer demand for AndroGel,
    the durability of AndroGel’s market share, the size and
    strength of AndroGel’s competitors, and AndroGel’s pricing
    trends and practices. See Dentsply, 
    399 F.3d at
    187–89
    (explaining these are relevant factors). And the Court did not
    ignore new entrants; it explained the three brand-name TTRT
    products that entered the market between 2011 and 2014 were
    not meaningful competitors to AndroGel because of their
    modest market shares. So the District Court did not err in
    concluding AbbVie and Besins had monopoly power in the
    relevant market.
    For all the reasons stated, we hold the District Court
    erred by rejecting the reverse-payment theory and in
    concluding AbbVie and Besins’s litigation against Teva was a
    sham. We also hold that the Court did not err when it concluded
    the Perrigo litigation was a sham and that AbbVie and Besins
    had monopoly power in the relevant market.
    82
    V.     REMEDIES
    We turn finally to remedial issues. The District Court
    erred in requiring AbbVie and Besins to disgorge $448 million
    because district courts lack the power to order disgorgement
    under Section 13(b) of the FTC Act. But it did not abuse its
    discretion in denying injunctive relief. Nor is it futile to remand
    the reverse-payment theory.
    A. The District Court erred in ordering disgorgement.
    The District Court ordered AbbVie and Besins to
    disgorge $448 million in ill-gotten profits. It reasoned “[t]he
    weight of authority . . . supports the conclusion that the grant
    of authority in section 13(b) to provide injunctive relief
    includes the full range of equitable remedies, including the
    power to order a defendant to disgorge illegally obtained
    funds.” AbbVie, 329 F. Supp. 3d at 137 (citation omitted). It
    also said a contrary interpretation would “eviscerate the FTC
    Act” because a monopolist would “be able to retain its ill-
    gotten gains and simply face an injunction against future
    wrongdoing.” Id.
    Reviewing the District Court’s interpretation de novo,
    see Kaufman v. Allstate N.J. Ins. Co., 
    561 F.3d 144
    , 151 (3d
    Cir. 2009), we conclude it erred in ordering disgorgement
    because district courts lack the power to do so under Section
    13(b).
    “The FTC has multiple instruments in its toolbox to
    combat unfair methods of competition” and unfair or deceptive
    acts or practices. FTC v. Shire ViroPharma, Inc., 
    917 F.3d 147
    ,
    155 (3d Cir. 2019). First is the FTC’s “traditional enforcement
    tool,” Section 5 of the FTC Act. 
    Id.
     (citing 
    15 U.S.C. § 45
    (b)).
    83
    That section allows the FTC to initiate an administrative
    proceeding to obtain a cease-and-desist order against an unfair
    method of competition or an unfair or deceptive act or practice.
    See 
    15 U.S.C. § 45
    (b). The FTC can then sue in federal district
    court to get “limited monetary remedies” for violations of the
    order. Shire, 917 F.3d at 155. A respondent who violates an
    order is liable for no more than $10,000 per violation. See 
    15 U.S.C. § 45
    (l). The FTC can also seek “mandatory injunctions”
    and “such other and further equitable relief” as the court deems
    appropriate. 
    Id.
     Violators other than the respondent are also
    liable for up to $10,000 per violation, but only if they violate
    the order knowingly. See 
    id.
     § 45(m)(1)(A).
    Second, under Section 19 of the FTC Act, the FTC can
    promulgate “rules which define with specificity acts or
    practices which are unfair or deceptive.” Id. § 57a(a)(1)(B).
    Alternatively, it can initiate an administrative proceeding to
    obtain a cease-and-desist order. Id. § 57a(a)(2). In either case,
    it can sue violators in federal district court. See id. § 57a(a)(1)–
    (2). If the FTC promulgated a rule, the court can “grant such
    relief as the court finds necessary to redress injury,” including
    but not limited to “the refund of money or return of property”
    and “the payment of damages.” Id. § 57b(b). Otherwise, the
    FTC can obtain such relief only if it shows “a reasonable man
    would have known under the circumstances” his conduct was
    “dishonest or fraudulent.” Id. § 57b(a)(2).
    A third enforcement tool is Section 13(b) of the FTC
    Act. “Unlike Section 5, Section 13 was not part of the original
    FTC Act.” Shire, 917 F.3d at 155. “Rather, [it] was added later
    [in 1973] in an effort to solve one of the main problems of the
    FTC’s relatively slow-moving administrative regime—the
    need to quickly enjoin ongoing or imminent illegal conduct.”
    Id.
    84
    The question presented in this appeal is whether a
    district court has the power to order disgorgement under
    Section 13(b). We start with the text, for where “the words of
    the statute are unambiguous, the judicial inquiry is complete.”
    Desert Palace, Inc. v. Costa, 
    539 U.S. 90
    , 91 (2003) (internal
    quotation marks and citation omitted). Section 13(b) states:
    Whenever the Commission has reason to
    believe—
    (1) that any person, partnership, or corporation is
    violating, or is about to violate, any provision of
    law enforced by the Federal Trade Commission,
    and
    (2) that the enjoining thereof pending the
    issuance of a complaint by the Commission and
    until such complaint is dismissed by the
    Commission or set aside by the court on review,
    or until the order of the Commission made
    thereon has become final, would be in the
    interest of the public—
    the Commission by any of its attorneys
    designated by it for such purpose may bring suit
    in a district court of the United States to enjoin
    any such act or practice. Upon a proper showing
    that, weighing the equities and considering the
    Commission’s likelihood of ultimate success,
    such action would be in the public interest, and
    after notice to the defendant, a temporary
    restraining order or a preliminary injunction may
    be granted without bond: Provided, however,
    That if a complaint is not filed within such period
    85
    (not exceeding 20 days) as may be specified by
    the court after issuance of the temporary
    restraining order or preliminary injunction, the
    order or injunction shall be dissolved by the
    court and be of no further force and effect:
    Provided further, That in proper cases the
    Commission may seek, and after proper proof,
    the court may issue, a permanent injunction.
    
    15 U.S.C. § 53
    (b). Section 13(b) authorizes a court to “enjoin”
    antitrust violations. It says nothing about disgorgement, which
    is a form of restitution, see Liu v. SEC, 
    140 S. Ct. 1936
    , 1940–
    41 (2020), not injunctive relief, see, e.g., Meghrig v. KFC W.,
    Inc., 
    516 U.S. 479
    , 484 (1996) (“[N]either [a mandatory nor
    prohibitory      injunction]      contemplates      the    award
    of . . . ‘damages’ or ‘equitable restitution.’”); Owner-Operator
    Indep. Drivers Ass’n v. Landstar Sys., Inc., 
    622 F.3d 1307
    ,
    1324 (11th Cir. 2010) (“Injunctive relief constitutes a distinct
    type of equitable relief; it is not an umbrella term that
    encompasses restitution or disgorgement.”). Thus, Section
    13(b) does not explicitly empower district courts to order
    disgorgement.
    This interpretation is even stronger in context. Section
    13(b) says that, in order to sue, the FTC must have reason to
    believe an antitrust violation is imminent or ongoing. See
    Shire, 917 F.3d at 156 (holding requirement applies to request
    for permanent injunction). This requirement makes perfect
    sense as applied to injunctive relief, which prevents or
    mandates a future action. See Injunction, BLACK’S LAW
    DICTIONARY (rev. 4th ed. 1968). So if a violator’s conduct is
    neither imminent nor ongoing, there is nothing to enjoin, and
    the FTC cannot sue under Section 13(b). By contrast, the
    requirement makes little sense as applied to a disgorgement
    86
    remedy. Disgorgement deprives a wrongdoer of past gains, see
    Liu, 140 S. Ct. at 1940–41, meaning that even if a wrongdoer’s
    conduct is not imminent or ongoing, he may have gains to
    disgorge. If Congress contemplated the FTC could sue for
    disgorgement under Section 13(b), it probably would not have
    required the FTC to show an imminent or ongoing violation.
    That requirement suggests Section 13(b) does not empower
    district courts to order disgorgement.
    The FTC’s other enforcement powers also support our
    interpretation. Both distinguish between injunctions and other
    forms of equitable relief. See 
    15 U.S.C. § 45
    (l) (FTC can seek
    “mandatory injunctions” and “such other and further equitable
    relief” as the court deems appropriate); 
    Id.
     § 57b(b) (court can
    “grant such relief as the court finds necessary to redress
    injury,” including but not limited to “the refund of money or
    return of property” and “the payment of damages”). The timing
    of the enactment of these powers is also instructive. Congress
    amended Section 5 to allow “such other and further equitable
    relief” at the same time it enacted Section 13(b). See Trans-
    Alaska Pipeline Authorization Act, Pub. L. No. 93-153, § 408,
    
    87 Stat. 576
    , 591 (1973). And it enacted Section 19—which
    allows disgorgement only under certain conditions—after
    Section 13(b). See Magnuson-Moss Warranty Act, Pub. L. No.
    93-637, § 206, 
    88 Stat. 2183
    , 2201–02 (1975). Thus, Sections
    5 and 19 both show that when Congress wants to empower a
    district court to order more expansive equitable relief than
    injunctions, it does so. Yet Congress did not do so in Section
    13(b).
    A contrary conclusion would undermine the FTC Act’s
    statutory scheme. Section 13(b) was added in 1973 because the
    FTC’s administrative regime moved slowly. See Shire, 917
    F.3d at 155. But it is slow-moving for a reason: it affords
    87
    defendants valuable procedural protections. For example,
    Section 5 conditions relief to defendants on an administrative
    proceeding and a cease-and-desist order. See 
    15 U.S.C. § 45
    (b). It also limits the monetary relief the FTC can obtain.
    See 
    15 U.S.C. § 45
    (l); see also 
    id.
     § 45(m)(1)(A). Section 19
    likewise requires the FTC to promulgate “rules which define
    with specificity acts or practices which are unfair,” or initiate
    an administrative proceeding to obtain a cease-and-desist
    order. Id. § 57a(a)(1)(B)–(2). By contrast, Section 13(b) does
    not incorporate these same protections: it grants the FTC a
    cause of action to seek a preliminary injunction in federal court
    without first pursuing administrative adjudication or
    rulemaking; and it imposes no limits on the amount of any
    monetary relief the FTC may be able to obtain. Thus, our
    interpretation does not “eviscerate” the FTC Act; it harmonizes
    its provisions.
    The FTC counters that Section 19 has a savings clause.
    That clause states: “Remedies provided in this section are in
    addition to, and not in lieu of, any other remedy or right of
    action provided by State or Federal law. Nothing in this section
    shall be construed to affect any authority of the Commission
    under any other provision of law.” 15 U.S.C. § 57b(e). But
    “[t]he saving clause preserves only those remedies that exist. It
    does not inform the question whether section 13(b) contains an
    implied power to award restitution.” FTC v. Credit Bureau
    Ctr., LLC, 
    937 F.3d 764
    , 775 (7th Cir. 2019).
    The FTC argues the interpretation we adopt goes
    against the weight of precedent. It notes that seven of our sister
    courts have held courts may order disgorgement under Section
    13(b), and we acknowledged as much in the footnote of a not-
    precedential decision. FTC Reply Br. 88 (quoting FTC v.
    Magazine Sols., LLC, 432 F. App’x 155, 158 n.2 (3d Cir.
    88
    2011)). That is true, but until recently, “[n]o circuit ha[d]
    examined whether reading a restitution remedy into section
    13(b) comports with the FTCA’s text and structure.” Credit
    Bureau, 937 F.3d at 785 (describing the precedents); see also
    id. (quoting United States v. Hill, 
    48 F.3d 228
    , 232 (7th Cir.
    1995) (“We are not merely to count noses. The parties are
    entitled to our independent judgment.”)). Moreover, today’s
    result is consistent with the recent ruling of the United States
    Court of Appeals for the Seventh Circuit, which, in a thorough
    and well-reasoned opinion, overturned its precedent
    authorizing restitution under Section 13(b). Credit Bureau
    Center, 937 F.3d at 764; see also FTC v. AMG Capital Mgmt.,
    LLC, 
    910 F.3d 417
    , 429 (9th Cir. 2018) (O’Scannlain, J.,
    specially concurring). Finally, our decision in Magazine
    Solutions does not bind us. See I.O.P. 5.7. Even if it did, the
    part of the footnote on which the FTC relies was dictum
    because the litigant forfeited the issue by failing to raise it in
    the district court. See 432 F. App’x at 158 n.2.
    Next, the FTC argues Congress has “twice ratified the
    consistent understanding of the courts of appeals”—first in
    1994, when Congress expanded the venue and service-of-
    process provisions of Section 13(b), see FTC Act Amendments
    of 1994, Pub. L. No. 103-312, § 10, 
    108 Stat. 1691
    , 1695–96
    (1994); and second in 2006, when Congress made “[a]ll
    remedies available to the Commission . . . including restitution
    to domestic or foreign victims” available for certain unfair
    practices abroad, see U.S. Safe Web Act of 2006, Pub. L. No.
    109-455, § 3, 
    120 Stat. 3372
    , 3372 (2006) (amending 
    15 U.S.C. § 45
    (a)(4)(B)) (emphasis added). FTC Reply Br. 93.
    We disagree. The 1994 amendment did not change the
    remedies available to the Commission. So it can hardly be seen
    as ratifying our sister courts’ precedents on that issue. And the
    89
    2006 amendment’s reference to restitution does not mean
    restitution is available under Section 13(b); the availability of
    restitution under Sections 5 and 19 is well-settled, and the
    amendment could have referred to those sections instead.
    The crux of the FTC’s counterargument is a pair of
    Supreme Court decisions on which our sister courts and the
    District Court relied—Porter v. Warner Holding Co., 
    328 U.S. 395
    , 398 (1946), and Mitchell v. Robert DeMario Jewelry, Inc.,
    
    361 U.S. 288
     (1960). According to the FTC, these decisions
    mean Section 13(b)’s use of the word “injunction” impliedly
    empowers district courts to order equitable relief in addition to
    injunctions. Once again, we disagree.
    In Porter, the Supreme Court held a district court could
    order restitution under the Emergency Price Control Act of
    1942, which authorized the Administrator of the Office of
    Price Administration to seek “a permanent or temporary
    injunction, restraining order, or other order” in court. 
    328 U.S. at 397
     (emphasis added). The Court reasoned:
    Unless otherwise provided by statute, all the
    inherent equitable powers of the District Court
    are available for the proper and complete
    exercise of that jurisdiction. And since the public
    interest is involved . . . , those equitable powers
    assume an even broader and more flexible
    character than when only a private controversy is
    at stake. Power is thereby resident in the District
    Court, in exercising this jurisdiction to do equity
    and to mould each decree to the necessities of the
    particular case. It may act so as . . . to accord full
    justice to all the real parties in interest . . . . In
    addition, the court may . . . give whatever other
    90
    relief may be necessary under the circumstances.
    Only in that way can equity do complete rather
    than truncated justice.
    Moreover, the comprehensiveness of this
    equitable jurisdiction is not to be denied or
    limited in the absence of a clear and valid
    legislative command. Unless a statute in so many
    words, or by a necessary and inescapable
    inference, restricts the court’s jurisdiction in
    equity, the full scope of that jurisdiction is to be
    recognized and applied.
    
    Id. at 398
     (internal citations and quotations omitted). The Court
    concluded that “the term ‘other order’ contemplates a remedy
    other than that of an injunction or restraining order, a remedy
    entered in the exercise of the District Court’s equitable
    discretion.” 
    Id. at 399
    . It noted that no “other provision of the
    Act . . . expressly or impliedly precludes a court from ordering
    restitution.” 
    Id. at 403
    .
    In Mitchell, the Supreme Court extended Porter. The
    Court held a district court could order wage reimbursement
    under the Fair Labor Standards Act, which gave courts
    jurisdiction “to restrain violations” of the Act. Mitchell, 
    361 U.S. at 289
    . The Court said:
    When Congress entrusts to an equity court the
    enforcement of prohibitions contained in a
    regulatory enactment, it must be taken to have
    acted cognizant of the historic power of equity to
    provide complete relief in light of the statutory
    purposes. As this Court long ago recognized,
    there is inherent in the Courts of Equity a
    91
    jurisdiction to . . . give effect to the policy of the
    legislature.
    
    Id.
     at 291–92 (alteration in original) (citation and internal
    quotations omitted). It was immaterial that the Act lacked
    language, like “other order” in Porter, that confirmed the
    court’s power to order reimbursement. See 
    id. at 291
     (citations
    omitted).
    We interpreted Porter and Mitchell in United States v.
    Lane Labs-USA Inc., 
    427 F.3d 219
     (3d Cir. 2005). There, we
    held a court could order restitution under the FDC Act in part
    because the Act empowered district courts to “restrain
    violations.” See 
    id. at 223
    ; 
    21 U.S.C. § 332
    (a). We explained
    Porter and Mitchell “charted an analytical course that seems
    fairly easy to follow: (1) a district court sitting in equity may
    order restitution unless there is a clear statutory limitation on
    the district court’s equitable jurisdiction and powers; and (2)
    restitution is permitted only where it furthers the purposes of
    the statute.” 
    Id. at 225
    . We noted “[n]umerous courts have
    followed this approach in opining about a court’s power to
    order . . . disgorgement under several different statutes.” 
    Id.
     In
    support, we cited, among other authorities, a decision holding
    disgorgement is available under Section 13(b). See 
    id.
     (citing
    FTC v. Gem Merch. Corp., 
    87 F.3d 466
    , 470 (11th Cir. 1996)).
    Following the analytical course that Lane Labs
    described, we conclude Section 13(b) does not implicitly
    empower district courts to order disgorgement. Unlike the
    statutes at issue in Porter, Mitchell, and Lane Labs, Section
    13(b) limits the district court’s equitable jurisdiction and
    powers because it specifies the form of equitable relief a court
    may order. Compare Porter, 
    328 U.S. at
    397–98 (“a permanent
    or temporary injunction, restraining order, or other order” in
    92
    court), Mitchell, 
    361 U.S. at 289
     (“restrain violations”), and
    Lane Labs, 
    427 F.3d at 223
     (same) with 
    15 U.S.C. § 53
    (b)
    (“enjoin”). Moreover, as we have explained, the context of
    Section 13(b) and the FTC Act’s broader statutory scheme both
    support “a necessary and inescapable inference” that a district
    court’s jurisdiction in equity under Section 13(b) is limited to
    ordering injunctive relief. Porter, 
    328 U.S. at 398
    . So our
    interpretation is consistent with Lane Labs and faithful to
    Porter and Mitchell.
    The FTC counters that in Lane Labs, we cited Gem
    Merchandising, which held disgorgement is available under
    Section 13(b). But we cited that case solely to support our
    approach to applying Porter and Mitchell, and the other cases
    we cited involved three different statutes. Lane Labs, 
    427 F.3d at 225
    . We were not interpreting statutes en masse.
    For these reasons, we hold district courts lack the power
    to order disgorgement under Section 13(b) of the FTC Act. So
    the District Court erred in requiring AbbVie and Besins to
    disgorge $448 million.
    B. The District Court did not abuse its discretion in
    denying injunctive relief.
    To obtain an injunction, the FTC must show there is a
    “cognizable danger of recurrent violation, something more
    than the mere possibility which serves to keep the case alive.”
    United States v. W.T. Grant Co., 
    345 U.S. 629
    , 633 (1953). An
    injunction that implicates a defendant’s First Amendment
    rights must “burden no more speech than necessary to serve a
    93
    significant government interest.” Madsen v. Women’s Health
    Ctr., Inc., 
    512 U.S. 753
    , 765 (1994) (citations omitted).
    The FTC sought an injunction:
    (1) to prohibit the filing of any claims of patent
    infringement based on the ’894 patent by a
    product that does not include about 0.1% to
    about 5% isopropyl myristate; (2) to prohibit
    defendants from filing any other sham litigation;
    (3) to prohibit defendants from engaging in any
    action that misuses government processes for
    anticompetitive purposes; and (4) to require
    defendants to certify that any patent
    infringement litigation or other use of
    governmental processes has an objectively
    reasonable basis.
    AbbVie, 329 F. Supp. 3d at 144. It also sought an injunction to
    “restore competitive market conditions” by compelling
    AbbVie and Besins to license AndroGel 1.62% to one or more
    generic competitors, and to sell them a supply of the gel until
    they could manufacture it themselves. Id. at 145. At oral
    argument on appeal, the FTC stated that because the ’894
    patent would soon expire, on remand it would not seek to
    prohibit the filing of patent infringement claims based on the
    ’894 patent, Oral Argument January 15, 2020 at 19:15–35;
    however, it reaffirmed its interest in a certification
    requirement, id. at 15:05–17:55.
    The District Court found no basis on which to conclude
    AbbVie and Besins’s sham litigations were likely to recur. It
    explained the FTC proved only “that defendants filed two sham
    infringement lawsuits,” which do not establish a “pattern or
    94
    practice.” Id. And though the FTC advised the Court that since
    suing Teva and Perrigo in 2011, AbbVie and Besins have filed
    “numerous other patent infringement suits against competitors,
    including seven lawsuits related to the ’894 patent,” the FTC
    presented no evidence those lawsuits were shams. See id. at
    145 n.31. Moreover, the Court noted generic versions of
    AndroGel had been on the market for over three years. See id.
    at 145. Finally, the Court held that because the proposed
    injunction would have limited AbbVie and Besins’s ability to
    file patent infringement suits with respect to any patent, it was
    so “overbroad and punitive” that it would violate their First
    Amendment rights. See id. (citing Madsen, 
    512 U.S. at 765
    ).
    On appeal, the FTC argues the District Court abused its
    discretion because, under the likelihood-of-recurrence test that
    governs SEC cases, AbbVie and Besins are likely to engage in
    further sham litigation. FTC Br. 48–49 (citing SEC v. Bonastia,
    
    614 F.2d 908
    , 912 (3d Cir. 1980)). The FTC also argues the
    Court’s First Amendment concerns rested on a
    mischaracterization of the injunctive relief it requested.
    Although its “pretrial brief used broader language,” its
    proposed order did not seek to prohibit AbbVie and Besins
    from engaging in any action that misuses government
    processes. FTC Br. 52 n.13. In any event, the FTC argues its
    injunction is constitutional because the certification
    requirement and prohibition on sham litigation implicate no
    First Amendment rights. Id. at 54. It also cites the “well-
    settled” rule that “once the Government has . . . establish[ed] a
    violation of law, all doubts as to the remedy are to be resolved
    in its favor.” Id. at 55 (citing United States v. E. I. du Pont de
    Nemours & Co., 
    366 U.S. 316
    , 334 (1961)).
    We disagree. Under Grant, the District Court had to
    determine whether the likelihood of AbbVie and Besins
    95
    engaging in sham litigation was a cognizable danger or merely
    possible. See 
    345 U.S. at 633
    . Even resolving doubts in the
    FTC’s favor, for the reasons the Court stated it was well within
    its discretion to conclude the FTC had shown a mere
    possibility.
    Nor did the District Court abuse its discretion by failing
    to apply the Bonastia factors, which we have never applied in
    FTC Act cases. See 
    614 F.2d at 908
    . And we are disinclined to
    extend Bonastia here for two reasons. First, our review of the
    voluminous record on appeal did not uncover any indication
    the FTC argued the District Court should extend Bonastia
    outside the SEC context. To the contrary, the FTC’s proposed
    findings of fact and conclusions of law relied solely on Grant,
    which the District Court applied. To the extent the FTC did not
    raise this argument in the District Court, it is forfeited on
    appeal. See In Re: J & S Props., LLC, 
    872 F.3d 138
    , 146 (3d
    Cir. 2017) (citing United States v. Joseph, 
    730 F.3d 336
    , 341–
    42 (3d Cir. 2013)).
    Second, we would not find an abuse of discretion even
    if Bonastia applied. Under that decision, courts look to:
    [1] the degree of scienter involved on the part of the
    defendant, [2] the isolated or recurrent nature of the
    infraction, [3] the defendant’s recognition of the
    wrongful nature of his conduct, [4] the sincerity of his
    assurances against future violations, and [5] the
    likelihood, because of defendant’s professional
    occupation, that future violations might occur.
    96
    Bonastia, 
    614 F.2d at 912
     (citation omitted). Although the
    Court did not recite these factors mechanically, its rationale
    accounted for the substance of all but the third and fourth. And
    the antitrust laws afford no relief on the basis of those factors
    alone. Cf. Howard Hess, 
    602 F.3d at
    251 (citing Bonastia, 
    614 F.2d at 912
    ).
    Thus, the District Court did not abuse its discretion in
    denying injunctive relief.
    C. Remand on the reverse-payment theory is not
    futile.
    AbbVie and Besins argue that remand to allow the FTC
    to proceed on the reverse-payment theory would be futile for
    several reasons. None is persuasive.
    First, AbbVie and Besins argue the FTC will not be able
    to show they “[are] violating, or [are] about to violate” the
    antitrust laws. AbbVie Br. 91 (quoting 
    15 U.S.C. § 53
    (b)). But
    in Shire, we held that whereas Section 13(b) of the FTC Act
    requires a plaintiff to plead the defendant “is violating” or is
    “about to violate” the antitrust laws, the likelihood-of-
    recurrence standard “applies when a court is considering
    whether to grant or deny injunctive relief.” 917 F.3d at 158.
    Second, AbbVie and Besins argue disgorgement would be
    inappropriate, both because Section 13(b) does not authorize it
    and because the District Court found, in calculating the amount
    of disgorgement, that Teva would not have marketed its
    generic gel even without the sham litigation. See AbbVie, 329
    F. Supp. 3d at 140 (“[T]he FTC has not established that, but for
    defendants’ sham litigation, Teva would have launched its
    product on June 2012 or at any time thereafter.”). We agree
    that disgorgement is inappropriate because Section 13(b) does
    97
    not authorize it. But because we cannot say, based on the
    pleadings alone, that the Court would abuse its discretion by
    granting the FTC injunctive relief, remand is not futile.
    Consistent with our holding in Shire, the District Court should
    apply the likelihood-of-recurrence standard. See 917 F.3d at
    158. Apart from that instruction, the District Court retains
    discretion to determine whether the FTC is entitled to an
    injunction if it ultimately succeeds on the reverse-payment
    theory.
    Finally, at oral argument before our Court, counsel for
    AbbVie argued for the first time that the District Court’s
    finding that Teva would not have marketed its generic gel
    without the sham litigation means that, on remand, the FTC
    will be unable to show antitrust injury, which is an element of
    every antitrust claim. See generally Wellbutrin, 868 F.3d at
    164–65; Oral Arg. 29:10–36:25. Arguments not briefed are
    forfeited on appeal. See Griswold v. Coventry First LLC, 
    762 F.3d 264
    , 274 n.8 (3d Cir. 2014) (citation omitted). Regardless,
    we think that on remand, the Court must consider anew its
    finding that Teva would not have marketed its generic gel
    without the sham litigation. The FTC plausibly alleged AbbVie
    paid Teva a large, unjustified reverse payment to delay its entry
    into the market for AndroGel.
    *      *       *
    For the reasons stated, we will reverse the District
    Court’s order granting the motion to dismiss Count I in part
    and to dismiss Count II. We will also affirm the Court’s order
    adjudging AbbVie and Besins liable for monopolization under
    Count I based upon its holding that the suit against Perrigo was
    a sham. Finally, we will affirm the Court’s order denying
    98
    injunctive relief, reverse the Court’s disgorgement order, and
    remand for further proceedings consistent with this opinion.
    99
    

Document Info

Docket Number: 18-2621

Filed Date: 9/30/2020

Precedential Status: Precedential

Modified Date: 9/30/2020

Authorities (50)

Federal Trade Commission v. Gem Merchandising Corp. , 87 F.3d 466 ( 1996 )

Owner-Operator Indep. Drivers v. Landstar System , 622 F.3d 1307 ( 2010 )

cheryl-ann-bracken-h-david-rothman-v-panorea-matgouranis-dianna , 296 F.3d 160 ( 2002 )

Howard Hess Dental Laboratories Inc. v. Dentsply ... , 602 F. Supp. 3d 237 ( 2010 )

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