Tinnus Enterprises, LLC v. Telebrands Corporation ( 2018 )


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  •        NOTE: This disposition is nonprecedential.
    United States Court of Appeals
    for the Federal Circuit
    ______________________
    TINNUS ENTERPRISES, LLC,
    Appellant
    v.
    TELEBRANDS CORPORATION,
    Appellee
    ______________________
    2017-1726
    ______________________
    Appeal from the United States Patent and Trademark
    Office, Patent Trial and Appeal Board in No. PGR2015-
    00018.
    ______________________
    Decided: May 30, 2018
    ______________________
    THOMAS MANSFIELD DUNLAP, Dunlap Bennett & Lud-
    wig PLLC, Leesburg, VA, argued for appellant. Also
    represented by DAVID LUDWIG, ROBERT D. SPENDLOVE;
    BRIAN M. KOIDE, Vienna, VA; CORTLAND CHRISTOPHER
    PUTBRESE, Richmond, VA; THOMAS MILTON CROFT, Fort
    Collins, CO; JEFFREY AHDOOT, Washington, DC; JASON
    DANIEL EISENBERG, ROBERT GREENE STERNE, JONATHAN
    TUMINARO, Sterne Kessler Goldstein & Fox, PLLC, Wash-
    ington, DC.
    2      TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION
    MORGAN CHU, Irell & Manella LLP, Los Angeles, CA,
    argued for appellee. Also represented by ROBERT THOMAS
    MALDONADO, TONIA A. SAYOUR, VISHAL PARIKH, Cooper &
    Dunham, LLP, New York, NY; ERIC J. MAURER, Boies,
    Schiller & Flexner, LLP, Washington, DC.
    ______________________
    Before O’MALLEY, WALLACH, and HUGHES, Circuit Judges.
    O’MALLEY, Circuit Judge.
    Tinnus Enterprises, LLC (“Tinnus”) appeals from a
    final written decision of the Patent Trial and Appeal
    Board (“Board”) in a post-grant review (“PGR”) proceeding
    finding that Telebrands Corporation (“Telebrands”) had
    demonstrated by a preponderance of the evidence that
    claims 1–6, 8, and 10–14 of U.S. Patent No. 9,051,066
    (“the ’066 patent”) are unpatentable for indefiniteness
    under 35 U.S.C. § 112(b) (2012). Telebrands Corp. v.
    Tinnus Enters., LLC, No. PGR2015-00018, 
    2016 WL 7985419
    , at *1 (P.T.A.B. Dec. 30, 2016) (“Board Deci-
    sion”).
    As a threshold issue, Tinnus challenges the Board’s
    decision granting institution, arguing that the Board
    applied the wrong statutory standard for instituting a
    PGR proceeding. Tinnus also appeals the Board’s final
    written decision, arguing that the Board erred in applying
    the standard for indefiniteness articulated in In re Pack-
    ard, 
    751 F.3d 1307
    (Fed. Cir. 2014), rather than the
    standard articulated in Nautilus, Inc. v. Biosig Instru-
    ments, Inc., 
    134 S. Ct. 2120
    (2014), and that, regardless,
    the ’066 patent survives either standard. Because the
    Board erred in its analysis, we reverse the Board’s finding
    of indefiniteness and remand to allow the Board to ad-
    dress the alleged obviousness grounds.
    TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION          3
    I. BACKGROUND
    A. The ’066 Patent and Prosecution History
    The ’066 patent, assigned to Tinnus, issued on June 9,
    2015, and is directed to an apparatus that fills inflatable
    containers, such as balloons, with fluid, such as water.
    See ’066 patent, col. 1, ll. 26–30. Specifically, the patent
    discloses an apparatus comprising a housing attached to a
    plurality of flexible hollow tubes, which are, in turn,
    attached to a plurality of containers by elastic fasteners.
    
    Id. at col.
    6, ll. 30–41. The ’066 patent discloses that each
    elastic fastener is configured such that “shaking the
    hollow tubes in a state in which the containers are sub-
    stantially filled with water overcomes the connecting force
    and causes the containers to detach from the hollow tubes
    thereby causing the elastic fastener[] to automatically
    seal the containers.” 
    Id. at col.
    6, ll. 46–51; see also 
    id. at col.
    6, ll. 41–51.
    Figure 1, reproduced below, is “a simplified diagram
    illustrating an example embodiment” of the invention. 
    Id. at col.
    2, ll. 33-34.
    4      TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION
    The ’066 patent discloses, in Figure 1, that fluid en-
    ters through a hose 14 and flows down through a housing
    12 and a plurality of hollow tubes 16 into a plurality of
    containers 18. See 
    id. at col.
    2, ll. 33–53. The containers
    are “clamped” by “elastic valves” such as “elastic fasten-
    ers.” 
    Id. at col.
    2, ll. 51–59. “When [the] containers 18
    have reached a desired size and/or they are filled with the
    desired volume of fluid, they may be removed from tubes
    16. They can be removed . . . by shaking them off[.]” 
    Id. at col.
    4, ll. 60–64.
    Claim 1, the sole independent claim, is representative
    of the invention, and recites:
    1. An apparatus comprising:
    a housing comprising an opening at a first end,
    and a plurality of holes extending through a com-
    mon face of the housing at a second end;
    a plurality of flexible hollow tubes, each hollow
    tube attached to the housing at a respective one of
    the holes at the second end of the housing;
    a plurality of containers, each container remova-
    bly attached to a respective one of the hollow
    tubes; and
    a plurality of elastic fasteners, each elastic fasten-
    er clamping a respective one of the plurality of
    containers to a corresponding hollow tube, and
    each elastic fastener configured to provide a con-
    necting force that is not less than a weight of one of
    the containers when substantially filled with wa-
    ter, and to automatically seal its respective one of
    the plurality of containers upon detaching the
    container from its corresponding hollow tube, such
    that shaking the hollow tubes in a state in which
    the containers are substantially filled with water
    overcomes the connecting force and causes the con-
    tainers to detach from the hollow tubes thereby
    TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION        5
    causing the elastic fasteners to automatically seal
    the containers, wherein the apparatus is config-
    ured to fill the containers substantially simulta-
    neously with a fluid.
    
    Id. at col.
    6, ll. 30-51 (emphases added).
    The specification does not define claim term “substan-
    tially filled.” Nor does the term appear anywhere in the
    specification. The specification does, however, discuss the
    term “filled” in the context of detaching the container
    from the hollow tube. See, e.g., 
    id. at col.
    3, ll. 48–51
    (“After containers 18 have reached a desired size or
    volume, they may be detached from tubes 16. In one
    example embodiment, filled containers 18 may be de-
    tached by pulling them away from tubes 16.” (emphases
    added)).
    In fact, original claim 1 of the application that issued
    as the ’066 patent did not recite “substantially filled.”
    J.A. 106–07. Rather, the examiner introduced “substan-
    tially filled” and its surrounding claim language in an
    examiner amendment in the Notice of Allowance. 
    Id. Specifically, the
    examiner added the below underlined
    language to claim 1:
    A plurality of elastic fasteners, each elastic fas-
    tener clamping a respective one of the plurality of
    containers to a corresponding hollow tube, and
    each elastic fastener configured to provide a con-
    necting force that is not less than a weight of one
    of the containers when substantially filled with
    water, and to automatically seal its respective one
    of the plurality of containers upon detaching the
    container from its corresponding hollow tube, such
    that shaking the hollow tubes in a state in which
    the containers are substantially filled with water
    overcomes the connecting force and causes the
    containers to detach from the hollow tubes there-
    6      TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION
    by causing the elastic fasteners to automatically
    seal the containers . . . .
    J.A. 106–07 (emphases added). In the examiner’s reasons
    for allowance, the examiner stated that these additions
    “define a configuration and functional capability of the
    elastic fasteners that is not taught by [the prior art]. In
    particular, the language beginning with ‘such that shak-
    ing . . . ’ defines an upper limit of the connecting force and
    thus defines the elastic fastener in a way that distin-
    guishes over [the prior art].” J.A. 107–08. The ’066
    patent issued shortly thereafter.
    B. The Post-Grant Review Proceeding
    On June 22, 2015, Telebrands filed a petition to insti-
    tute a PGR of claims 1–14 of the ’066 patent on grounds
    that the claims are more likely than not unpatentable
    under 35 U.S.C. §§ 103 and 112. Before the Board issued
    its institution decision, Tinnus filed a statutory disclaimer
    under 35 U.S.C. § 253(a), disclaiming claims 7 and 9 of
    the ’066 patent. Telebrands Corp. v. Tinnus Enters., LLC,
    No. PGR2015-00018, 
    2016 WL 270152
    , at *1 n.1 (P.T.A.B.
    Jan. 4, 2016) (“Board Institution Decision”). On January
    4, 2016, the Board granted institution on both §§ 103 and
    112 grounds after “determin[ing] that the information
    presented in the Petition demonstrates that it is more
    likely than not that [Telebrands] would prevail in show-
    ing that the challenged claims, except claims 7 and 9, are
    unpatentable.” 
    Id. at *1.
        On December 30, 2016, the Board issued a final writ-
    ten decision in the PGR. In its decision, the Board ap-
    plied the indefiniteness standard articulated in In re
    Packard to find that the claim term “substantially filled”
    was indefinite, and therefore, rendered all challenged
    claims of the ’066 patent unpatentable. Board Decision,
    at *6–14. Because the Board found all challenged claims
    indefinite, it did not reach the instituted obviousness
    grounds.
    TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION       7
    C. The Concurrent Litigation
    After the Board instituted the PGR, but before it is-
    sued the final written decision, Tinnus filed a complaint
    against Telebrands alleging that Telebrands’s product,
    Balloon Bonanza, infringes the ’066 patent. Tinnus
    Enters., LLC v. Telebrands Corp., No. 6:15-cv-00551-RC-
    JDL, ECF No. 66 (E.D. Tex. Sept. 11, 2015) (“Tinnus I”).
    In that case, Tinnus moved for a preliminary injunction.
    The district court granted the motion after applying the
    indefiniteness standard articulated in Nautilus to find
    that Telebrands “ha[s] not raised a substantial question
    concerning the validity of the ’066 [p]atent based on the
    claim term ‘substantially filled’ being indefinite.” Tinnus
    I, slip op. at 10–11. Telebrands appealed. Tinnus Enters.,
    LLC v. Telebrands Corp., 
    846 F.3d 1190
    (Fed. Cir. 2017)
    (“Tinnus II”).
    On January 24, 2017, after the Board issued its final
    written decision in the PGR at issue in this appeal, this
    court affirmed the district court’s order granting Tinnus’s
    motion for a preliminary injunction in Tinnus I. 
    Id. at 1194.
    In affirming the order, we found that “the district
    court’s conclusion that Telebrands’ indefiniteness argu-
    ment failed to raise a substantial question of validity does
    not suffer from a clear or obvious error.” 
    Id. at 1206
    (internal quotations omitted). Rather, “[w]e f[ou]nd it
    difficult to believe that a [person of ordinary skill in the
    art, defined as] a person with an associate’s degree in a
    science or engineering discipline[,] who had read the
    specification and relevant prosecution history would be
    unable to determine with reasonable certainty when a
    water balloon is ‘substantially filled.’” 
    Id. Tinnus now
    challenges the Board’s decision granting
    institution and appeals from the Board’s final written
    decision finding the challenged claims unpatentable. We
    have jurisdiction to review the Board’s final written
    decision pursuant to 28 U.S.C. § 1295(a)(4)(A).
    8       TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION
    II. DISCUSSION
    First, Tinnus challenges Board’s decision granting in-
    stitution, arguing that the Board applied the wrong
    statutory standard for institution. Second, Tinnus ap-
    peals the final written decision, arguing that the Board
    erred in applying the standard for indefiniteness articu-
    lated in Packard rather than the standard articulated in
    Nautilus, and that, regardless, the claim term “substan-
    tially filled” is not indefinite under either standard. 1 We
    address each issue in turn.
    A. The Standard for Instituting Post-Grant Review
    Section 324(a) of the Patent Act sets forth the stand-
    ard for instituting a PGR, and states that “[t]he Director
    may not authorize a post-grant review to be instituted
    unless the Director determines the information presented
    in the petition . . . would demonstrate that it is more
    1   The Director of the PTO intervened in this appeal
    to support Telebrands’s positions on two issues—first, the
    PTO advanced the Packard standard as the correct indef-
    initeness standard in both examinations and PGR pro-
    ceedings, and second, the PTO reiterated that decisions to
    institute are nonappealable under Cuozzo Speed Techs.,
    LLC v. Lee, 
    136 S. Ct. 2131
    (2016). Prior to oral argu-
    ment, however, the PTO moved to withdraw as interve-
    nor, stating that “[t]he USPTO stands by the position that
    the indefiniteness approach advocated in our brief is
    correct in the context of examination. But because the
    [Board]’s approach to claim construction and indefinite-
    ness during post-issuance proceedings under the America
    Invents Act is something the agency is actively consider-
    ing, the Director has decided not to advocate for a particu-
    lar approach in this appeal.” Tinnus Enters., LLC v.
    Tinnus Corp., No. 17-1726, ECF No. 73, slip op. at 1–2
    (Fed. Cir. Mar. 29, 2018).
    TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION       9
    likely than not that at least 1 of the claims challenged in
    the petition is unpatentable.” In comparison, § 314(a)
    imposes a lower standard for institution of inter partes
    review (“IPR”) proceedings, stating that the Director may
    institute an IPR only if he determines that the petition
    “shows that there is a reasonable likelihood that the
    petitioner would prevail with respect to at least 1 of the
    claims challenged in the petition.”
    Tinnus argues that the Board exceeded its statutory
    authority when it instituted the PGR because it applied
    the lower, “reasonable likelihood” standard for instituting
    IPRs rather than the higher, “more likely than not”
    standard for instituting PGRs. Telebrands argues that
    the question of whether the Board applied the incorrect
    standard for institution is nonappealable under Cuozzo.
    See Appellee’s Br. 16 (citing 35 U.S.C. § 324(e)). We need
    not decide the appealability issue because, as explained
    below, we would reach the question of whether the Board
    erred in its final written decision regardless of whether
    the institution decision is appealable.
    As Tinnus notes, the Board recites the “reasonable
    likelihood” standard at various places in its decision
    granting institution. See, e.g., Board Institution Decision,
    at *8 (“Petitioner has demonstrated a reasonable likeli-
    hood of prevailing under 35 U.S.C. § 112(b)[.]”); 
    id. at *14
    (“For the foregoing reasons, we determine that Petitioner
    has established a reasonable likelihood of prevailing
    under 35 U.S.C. § 103(a)[.]); 
    id. (“Petitioner also
    has
    established a reasonable likelihood of prevailing under 35
    U.S.C. § 112(b)[.]”). Although these statements may be
    imprecise, they do not amount to error because the Board
    made specific findings and an ultimate determination
    under the correct standard recited in § 324(a).
    For example, when assessing the indefiniteness
    grounds, the Board found that, “[d]ue to the ambiguity in
    both how much volume a container holds when it is ‘sub-
    10     TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION
    stantially filled’ and how much ‘shaking’ the hollow tubes
    must be subjected to, a skilled artisan would be unable to
    determine whether a given apparatus does or does not
    have the shake-to-detach feature[.]” 
    Id. at *8.
    Addition-
    ally, the Board concluded that it was “persuaded at this
    stage of the proceeding that the [disputed claim language]
    is indefinite.” 
    Id. at *7.
    Further, when assessing the
    instituted obviousness grounds, the Board “determine[d]
    that [Telebrands] ha[d] provided adequate articulated
    reasoning with rational underpinning to support a legal
    conclusion of obviousness . . . based on the combined
    teachings of” the prior art. 
    Id. at *13.
    These statements
    indicate that the Board made specific findings under the
    correct, “more likely than not” standard.
    Indeed, the Board stated the correct standard in its
    ultimate determination that “the information presented
    in the Petition demonstrates that it is more likely than
    not that [Telebrands] would prevail in showing that the
    challenged claims . . . are unpatentable.” 
    Id. at *1.
        Thus, even if this issue were appealable, we would
    find that the Board did not err in instituting the PGR
    because it made explicit determinations under the correct,
    “more likely than not” standard; references to “a reasona-
    ble likelihood” were harmless.
    B. The Board Erred in Finding
    the ’066 Patent Indefinite
    The definiteness requirement, set out in 35 U.S.C.
    § 112(b), states that the “specification shall conclude with
    one or more claims particularly pointing out and distinct-
    ly claiming the subject matter which the inventor or a
    joint inventor regards as the invention.” Indefiniteness is
    a legal question with underlying factual determinations.
    Azko Nobel Coatings, Inc. v. Dow Chemical Co., 
    811 F.3d 1334
    , 1343 (Fed. Cir. 2016). We review the Board’s legal
    conclusions de novo and its underlying findings of fact for
    TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION        11
    substantial evidence. In re Baxter Int’l, Inc., 
    678 F.3d 1357
    , 1361 (Fed. Cir. 2012).
    In Nautilus, the Supreme Court articulated the
    standard for whether a claim in an issued patent meets
    the definiteness requirement under § 112, ¶ 2, now §
    
    112(b). 134 S. Ct. at 2129
    . There, the Supreme Court
    stated that it “read[s] § 112 . . . to require that a patent’s
    claims, viewed in light of the specification and prosecution
    history, inform those skilled in the art about the scope of
    the invention with reasonable certainty.” 
    Id. The Court
    specifically addressed indefiniteness in the context of
    issued patent claims asserted in a district court litigation.
    
    Id. at 2126–27.
    The Supreme Court did not expressly
    limit its holding to that context, however.
    In Packard, which pre-dates Nautilus, we addressed
    indefiniteness in a different context. There, we resolved
    the limited question of “what standard for indefiniteness
    should the [PTO] apply to pre-issuance 
    claims[.]” 751 F.3d at 1309
    (emphasis added). We held that an examin-
    er may properly reject a pending claim as indefinite if it
    “contains words or phrases whose meaning is unclear.”
    
    Id. at 1309–10.
    We based our holding, in part, on the
    PTO’s examination function “to ensure compliance with
    the statutory criteria” during the pre-issuance process,
    and the “substantive interaction” that occurs between the
    examiner and the applicant during prosecution. 
    Id. at 1311-12.
    The PTO continues to apply this standard today
    for pre-issuance assessment of indefiniteness. Manual of
    Patent Examining Proc. § 2170.02.
    We expressly acknowledged in Packard that, at that
    time, the Supreme Court was reviewing in Nautilus the
    question of what indefiniteness standard should apply to
    issued patents; we therefore decided the question before
    us in Packard “without regard to the proper formulation
    of the judicially-applied indefiniteness standard that may
    12       TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION
    be appropriate for post-issuance assessment of indefinite-
    ness[.]” 
    Id. at 1312-13,
    (emphasis added).
    Here, Tinnus argues that the Board erred in applying
    Packard to assess the indefiniteness of its issued patent
    in the context of a PGR. Telebrands responds that the
    Packard standard should apply in this context because
    post-grant review proceedings share more similarities
    with examinations than with district court litigations.
    Neither party points to any binding precedent that direct-
    ly addresses this question, and the PTO has not promul-
    gated a rule addressing which standard should apply.
    Importantly, moreover, neither party explains why a
    choice between the two standards would affect our review
    of the final written decision. 2
    In his motion to withdraw as intervenor, the Director
    stated that the “[Board]’s approach to claim construction
    and indefiniteness during post-issuance proceedings
    under the America Invents Act is something the agency is
    actively considering[.]” No. 17-1726, ECF No. 73, slip op.
    at 1 –2. This suggests that the PTO may promulgate
    rules surrounding this issue in the future. Indeed, the
    PTO recently issued a notice of proposed rulemaking for
    claim construction that “proposes to replace the broadest
    reasonable interpretation (‘BRI’) standard for construing
    unexpired patent claims in [post-grant] proceedings with
    a standard that is the same as the standard applied in
    federal district courts[.]” Changes to Claim Construction
    Standard for Interpreting Claims In Trial Proceedings
    Before the Patent Trial and Appeal Board, 83 Fed. Reg.
    21,221 (proposed May 9, 2018) (to be codified at 37 C.F.R.
    2   After the Supreme Court decided Nautilus, the
    appellant in Packard petitioned the Supreme Court for
    writ of certiorari to review this court’s decision. Packard
    v. Lee, 
    135 S. Ct. 2310
    (2015). The Supreme Court denied
    the petition. 
    Id. TINNUS ENTERPRISES,
    LLC   v. TELEBRANDS CORPORATION      13
    pt. 42). While that notice does not address indefiniteness,
    it does indicate that the Director is committed to reas-
    sessing questions such as that presented here.
    We need not decide which standard governs PGRs
    here, because Tinnus concedes that the standard is not
    dispositive because we may resolve this case in its favor
    under Packard. See Appellant’s Br. 33 n.4 (arguing the
    Board incorrectly decided indefiniteness under the Pack-
    ard standard “for the same reasons discussed here under
    Nautilus[.]”); see also Oral Arg. at 1:56−2:06,
    http://oralarguments.cafc.uscourts.gov/default.aspx?fl=20
    17-1726.mp3 (Q: “If we find this not indefinite, even
    under Packard, isn’t that enough for you? A: It would be,
    your honor . . . .”).
    We, thus, await an appropriate case to resolve any
    apparent inconsistency between the two indefiniteness
    standards—one where the result actually turns on such a
    resolution and any views we express would not be dicta.
    At that time, we will consider any rulemaking from the
    Director on the matter.
    1. The ’066 patent is not indefinite under either
    Nautilus or Packard
    We find that the Board erred in its ultimate legal de-
    termination that “substantially filled” is indefinite be-
    cause the claim language, specification, and prosecution
    history of the ’066 patent provide objective boundaries for
    understanding the disputed term under either Nautilus or
    Packard.
    As a threshold matter, we find that use of the relative
    term “substantially” within the disputed claim term does
    not render the term indefinite. We have explained “that
    relative terms such as ‘substantially’ do not render patent
    claims so unclear as to prevent a person of skill in the art
    from ascertaining the scope of the claim.” Deere & Co. v.
    Bush Hog, LLC, 
    703 F.3d 1349
    , 1359 (Fed. Cir. 2012).
    14      TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION
    Rather, “[a]s long as claim terms satisfy [the Nautilus]
    test, relative terms and words of degree do not render
    patent claims invalid.” One-E-Way, Inc. v. Int’l Trade
    Comm’n, 
    859 F.3d 1059
    , 1063 (Fed. Cir. 2017). Here, the
    claim term “substantially filled” satisfies the Nautilus
    standard because, as explained next, the claim language,
    in view of the specification and prosecution history, in-
    form a person of ordinary skill about the scope of the
    invention.
    We begin our analysis with the claim language. At
    first blush, the claim term “substantially filled” appears
    to reference the volume of the container. When read in
    the context of the surrounding claim language, however,
    it is clear that “substantially filled” serves to inform a
    person of ordinary skill of the strength of the elastic
    fastener disclosed in claim 1. The relevant claim lan-
    guage recites:
    a plurality of elastic fasteners, each elastic fasten-
    er clamping a respective one of the plurality of
    containers to a corresponding hollow tube, and
    each elastic fastener configured to provide a con-
    necting force that is not less than a weight of one of
    the containers when substantially filled with wa-
    ter, and to automatically seal its respective one of
    the plurality of containers upon detaching the
    container from its corresponding hollow tube, such
    that shaking the hollow tubes in a state in which
    the containers are substantially filled with water
    overcomes the connecting force and causes the con-
    tainers to detach from the hollow tubes thereby
    causing the elastic fasteners to automatically seal
    the containers, wherein the apparatus is config-
    ured to fill the containers substantially simulta-
    neously with a fluid.
    ’066 patent at col. 6, ll. 30-51 (emphases added).
    TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION        15
    The claim language indicates that, to meet the limita-
    tion of “elastic fastener” with the requisite “connecting
    force,” the apparatus must be “substantially filled” such
    that it detaches when shaken. Thus, a person of ordinary
    skill would understand that, to avoid infringement, one
    could select an elastic fastener that is either weak enough
    that the container would fall off without shaking or strong
    enough that a container would not fall off despite shaking.
    As Tinnus notes, this reading of the claim language is
    supported by Dr. Kudrowitz’s testimony that “whether a
    container is substantially filled with water is directly
    related to the ability to shake and detach that container,”
    and that a person of ordinary skill in the art “would
    understand that there was a definitive point at which
    there would be too much water such that the containers
    would detach without shaking, thereby not practicing the
    claim.” Appellant Br. at 38. This reading is also con-
    sistent with statements in the specification that describe
    various ways in which a container could detach from the
    tubes, including via gravity, pulling, and shaking. These
    embodiments serve to inform a person of ordinary skill of
    the objective boundaries of the claimed limitation.
    For example, the specification describes an elastic fas-
    tener that is weak enough to detach without shaking
    when it states that, in some embodiments, “when filled
    containers 18 reach a threshold weight, they slip off tubes
    16 due to gravity.” ’066 patent, col. 3, ll. 65–col. 4, ll. 5.
    This type of elastic fastener would not infringe claim 1
    because it would detach without shaking and therefore,
    would not be “substantially filled.”
    In another instance, the specification contemplates an
    elastic fastener that is strong enough that it will not
    detach despite shaking when it states that, in some
    embodiments, “filled containers 18 may be detached by
    pulling them away from tubes 16.” 
    Id. at col.
    3, ll. 50–51.
    This type of elastic fastener also would not infringe claim
    16     TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION
    1 because it would not detach despite shaking and, there-
    fore, would not be “substantially filled.”
    Finally, the specification describes the claimed limita-
    tion when it states that in other embodiments, “the con-
    necting force holding filled containers 18 to tubes 16 may
    be overcome by an upward acceleration on tubes, for
    example, when they are shaken.” 
    Id. at col.
    3, ll. 52–57.
    Unlike the other two embodiments, this last embodiment
    describes the claimed limitation, and together, these
    embodiments demonstrate that the ’066 patent is “precise
    enough to afford clear notice of what is claimed, [and]
    thereby ‘apprise the public of what is still open to them.’”
    
    Nautilus, 134 S. Ct. at 2129
    (quoting Markman v.
    Westview Instruments, Inc., 
    517 U.S. 370
    , 373 (1996))
    (alterations omitted).
    The prosecution history provides further evidence
    that the claim term is not indefinite. As stated above, the
    original claims of the application that issued as the ’066
    patent did not contain the disputed claim term. Rather,
    the examiner added the language in an examiner’s
    amendment in the Notice of Allowance. In the examin-
    er’s reasons for allowance, the examiner stated that these
    additions “define a configuration and functional capability
    of the elastic fasteners that is not taught by [the prior
    art]. In particular, the language beginning with ‘such
    that shaking . . . ’ defines an upper limit of the connecting
    force and thus defines the elastic fastener in a way that
    distinguishes over [the prior art].” J.A. 107–08.
    The examiner’s own remarks confirm that the claim
    language informs a person of ordinary skill of the objec-
    tive boundaries of the claim term. Additionally, we
    presume that an examiner would not introduce an indefi-
    nite term into a claim when he/she chooses to amend the
    claim for the very purpose of putting the application in a
    condition for allowance. See Northern Telecom, Inc. v.
    Datapoint Corp., 
    908 F.2d 931
    , 939 (“It is presumed that
    TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION     17
    public officials do their assigned jobs”). Thus, we find
    that the ’066 patent is not indefinite under the Nautilus
    standard because the claims, viewed in light of the speci-
    fication and prosecution history, inform a person of ordi-
    nary skill about the scope of the invention with
    reasonable certainty.
    For the reasons stated above, we also find that the
    Board erred in its ultimate legal conclusion that the claim
    term is indefinite under Packard. Under Packard, “a
    claim is indefinite when it contains words or phrases
    whose meaning is 
    unclear.” 751 F.3d at 1314
    . Here, the
    claims, in the context of the specification, “notify the
    public of what is within the protections of the patent, and
    what is not.” 
    Id. at 1313.
    Therefore, the claim term is not
    indefinite under Packard.
    The Board erred in its analysis when it read the dis-
    puted claim term in isolation rather than in the context of
    the surrounding claim language as § 112(b) requires.
    Power-One, Inc. v. Artesyn Techs., Inc., 
    599 F.3d 1343
    ,
    1350 (Fed. Cir. 2010) (“To comport with § 112's definite-
    ness requirement, the boundaries of the claim, as con-
    strued by the court, must be discernible to a skilled
    artisan based on the language of the claim, the specifica-
    tion, and the prosecution history, as well as other
    knowledge of the relevant field of art.”). This led the
    Board to assume that “substantially filled” refers to the
    volume of the container. As noted above, when read in
    the context of the surrounding claim language, “substan-
    tially filled” does not refer to the volume of fluid in the
    container, but rather further defines the elastic fastener
    limitation. See Hill-Rom Servs., Inc. v. Stryker Corp., 
    755 F.3d 1367
    , 1371 (Fed. Cir. 2014) (“While we read claims in
    view of the specification, of which they are a part, we do
    not read limitations from the embodiments in the specifi-
    cation into the claims.”).
    18     TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION
    This error infected the rest of the Board’s analysis
    and led it to conclude that the claim term is indefinite
    under Packard on “several levels.” Telebrands, 
    2016 WL 7985419
    , at *7. We address each aspect of the Board’s
    analysis below.
    First, the Board found that “the [s]pecification con-
    sistently teaches that whether a container is ‘filled’ de-
    pends, subjectively, on whether a desired size or volume
    has been reached.” 
    Id. at *7.
    In support, the Board cited
    various instances where the specification recites detach-
    ing the containers when they reach a “desired size.” 
    Id. at *7
    (quoting ’066 patent, col. 3, ll. 48–51 (“After containers
    18 have reached a desired size or volume, they may be
    detached from tubes 16. In one example embodiment,
    filled containers 18 may be detached by pulling them
    away from tubes 16.” (emphasis added)); col. 4, ll. 6–9 (“In
    some embodiments, containers 18 may be marked with
    volumetric measurements, and fluid flow may be turned
    off when the fluid has filled containers 18 to a desired
    volume.” (emphasis added)); col. 4, ll. 60–63 (“When
    containers 18 have reached a desired size and/or they are
    filled with the desired volume of fluid, they may be re-
    moved from tubes 16. They can be removed . . . by shaking
    them off.” (emphasis added)); col. 5, ll. 43–46 (“When fluid
    fills container 18A to a desired volume, for example, as
    indicated by volumetric measurement marking 44, con-
    tainer 18A may be detached from tube 16A.” (emphasis
    added))).
    Again, the Board mistakenly interprets these state-
    ments in the specification divorced from the surrounding
    claim language of the disputed claim term. The claim
    language clearly sets forth that a container is substantial-
    ly filled based not on the size or volume of the container,
    but rather on whether the container overcomes the con-
    necting force of the elastic fastener such that it detaches
    upon shaking. Further, in Tinnus II, we found it signifi-
    cant that the “specification . . . does not define or equate
    TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION         19
    ‘substantially filled’ with ‘desired 
    size.’” 846 F.3d at 1206
    . 3 Rather, we concluded, as we do now, that the
    claims themselves teach that, “if the balloons detach after
    shaking, then they are ‘substantially filled.’” 
    Id. Thus, we
    adopt our reasoning in Tinnus II to find that these
    statements from the specification do not render the claim
    term indefinite.
    Telebrands argues that we must review the Board’s
    determination that the term “filled” is indefinite for
    substantial evidence because it is based on the Board’s
    subsidiary factual finding that “the level of water in a
    ‘substantially filled’ container is not ascertainable or
    measurable by reference to any objective standard.”
    Appellee Br. at 40 (quoting J.A.32). The Board’s ultimate
    determination of indefiniteness, however, is reviewed de
    novo. Kinetic Concepts, Inc. v. Blue Sky Med. Grp., Inc.,
    
    554 F.3d 1010
    , 1022 (Fed. Cir. 2009); cf. Cuozzo, 135 S.
    Ct. at 841 (“[t]he district judge, after deciding the factual
    dispute, will then interpret the patent claim in light of the
    facts as he has found them. This ultimate interpretation
    is a legal conclusion.”). Even if we find that substantial
    evidence supports the Board’s factual finding as to the
    level of water, we need not defer to the Board’s ultimate
    legal determination that this finding renders the claim
    term indefinite. Here, the inability to measure the level
    of water is ultimately irrelevant to whether the claim
    term is indefinite because a person of ordinary skill may
    still determine if a container is “substantially filled” if the
    3   While our decision in Tinnus II has no preclusive
    effect because the indefiniteness issue there was embed-
    ded in a preliminary injunction analysis, and thus in-
    volved a different burden of proof and different standard
    of review than the issue presented in this 
    case, 846 F.3d at 1205
    –06, we still find the merits of our reasoning from
    Tinnus II persuasive to our analysis here.
    20     TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION
    balloon detaches upon shaking. Thus, the Board’s factual
    finding does not change our conclusion that the claim
    term is not indefinite.
    Second, the Board found that claim 1’s use of “ex-
    pandable containers” adds a second level of ambiguity
    because “neither claim 1 nor the [s]pecification provides
    an objective standard for measuring the scope of [the
    disputed claim term] as applied to an expandable contain-
    er.” Telebrands, 
    2016 WL 7985419
    , at *10. In support,
    the Board points to the testimony of Tinnus’s expert, Dr.
    Kudrowitz, and states that his analysis “highlights [this]
    second level of ambiguity.” 
    Id. Here, we
    find, as we did in Tinnus II, that the claim
    language and the specification of the ’066 patent clearly
    set out the objective boundaries for the claim term in the
    context of expandable containers such as balloons—i.e., “if
    the balloons detach after shaking, then they are substan-
    tially 
    filled.” 846 F.3d at 1206
    . The Board’s conclusion
    that Dr. Kudrowitz’s testimony highlights “a second level
    of ambiguity” does not persuasively counter the weight of
    the intrinsic evidence.
    Telebrands argues that we must review the Board’s
    finding that an expandable container adds a second layer
    of ambiguity for substantial evidence because the Board’s
    reasoning is based in its assessment of testimony from Dr.
    Kudrowitz and Telebrands’s expert, Dr. Kamrin. As
    Tinnus notes, however, “Telebrands attempts to cloud the
    issue by claiming that the Board’s alleged findings of fact
    are the real reason why the Board reached its conclusion,”
    when instead, “none of the ‘facts’ raised by Telebrands
    served as the basis for the Board’s decision.” Reply Br. at
    14. We agree with Tinnus at least as to Dr. Kamrin’s
    testimony because nowhere in the Board’s discussion of
    this purported “second level of ambiguity” does the Board
    reference or cite to Dr. Kamrin’s testimony.
    TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION     21
    Regardless, we need not defer to the Board’s assess-
    ment of Dr. Kamrin’s testimony or of Dr. Kudrowitz’s
    testimony when it is inconsistent, as it is here, with the
    intrinsic evidence. See Homeland Housewares, LLC v.
    Whirlpool Corp., 
    865 F.3d 1372
    , 1378 (Fed. Cir. 2017)
    (“[W]e must disregard the testimony of an expert that is
    plainly inconsistent with the record, or based on an incor-
    rect understanding of the claim[s]” (citations and internal
    quotation marks omitted)). Here, we find that the Board’s
    assessment that the expert testimony “highlights a second
    level of ambiguity” is inconsistent with the intrinsic
    evidence, because the intrinsic evidence sets out the
    objective boundaries for the claim term within the context
    of expandable containers. Therefore, we need not defer to
    the Board’s assessment of the expert testimony.
    Third, the Board found “that the claims are unclear
    and indefinite for the additional reason that there is no
    standard by which one of ordinary skill in the art can
    measure ‘substantially’ so as to understand what is
    claimed when the claims are read in light of the
    [s]pecification.” Telebrands, 
    2016 WL 7985419
    , at *14.
    As stated above, this court has repeatedly confirmed that
    relative terms such as “substantially” do not render a
    patent claim per se indefinite. 
    Deere, 703 F.3d at 1359
    .
    Here, the claim language and the specification guide the
    determination of whether a balloon is “substantially
    filled.” Thus, we are not persuaded that the use of “sub-
    stantially” in claim 1 renders the claim indefinite.
    III. CONCLUSION
    We have considered the parties’ other arguments and
    find them unpersuasive. 4 For the foregoing reasons, we
    4    Tinnus also argues that the PGR proceeding vio-
    lated Tinnus’s constitutional rights. We reject this argu-
    ment in view of the Supreme Court’s decision in Oil States
    22      TINNUS ENTERPRISES, LLC   v. TELEBRANDS CORPORATION
    reverse the Board’s finding that the ’066 patent is un-
    patentable as indefinite and remand for further proceed-
    ings consistent with this opinion and the Supreme Court’s
    intervening holding in SAS Institute Inc. v. Iancu, 138 S.
    Ct. 1348 (2018).
    REVERSED AND REMANDED
    COSTS
    No costs.
    Energy Services, LLC v. Greene’s Energy Group, LLC, 
    138 S. Ct. 1365
    , 1373–74 (2018), holding that inter partes
    review proceedings do not violate a patent owner’s consti-
    tutional rights because patents are the grant of a public
    franchise. We find that the Supreme Court’s holding in
    Oil States applies equally in the context of PGR proceed-
    ings.