Ppc Broadband, Inc. v. Iancu ( 2018 )


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  •        NOTE: This disposition is nonprecedential.
    United States Court of Appeals
    for the Federal Circuit
    ______________________
    PPC BROADBAND, INC.,
    Appellant
    v.
    ANDREI IANCU, UNDER SECRETARY OF
    COMMERCE FOR INTELLECTUAL PROPERTY
    AND DIRECTOR OF THE UNITED STATES
    PATENT AND TRADEMARK OFFICE,
    Intervenor
    ______________________
    2017-1362, 2017-1363, 2017-1364
    ______________________
    Appeals from the United States Patent and Trade-
    mark Office, Patent Trial and Appeal Board in Nos.
    IPR2013-00340, IPR2013-00345, IPR2013-00346.
    ______________________
    Decided: July 3, 2018
    ______________________
    J. MICHAEL JAKES, Finnegan, Henderson, Farabow,
    Garrett & Dunner, LLP, Washington, DC, argued for
    appellant. Also represented by ROBERT L. BURNS, II,
    Reston, VA; JUSTIN A. HENDRIX, Palo Alto, CA.
    LORE A. UNT, Office of the Solicitor, United States
    Patent and Trademark Office, Alexandria, VA, argued for
    2                             PPC BROADBAND, INC.   v. IANCU
    intervenor. Also represented by NATHAN K. KELLEY, MAI-
    TRANG DUC DANG, THOMAS W. KRAUSE, FARHEENA
    YASMEEN RASHEED.
    ______________________
    Before DYK, MOORE, and O’MALLEY, Circuit Judges.
    O’MALLEY, Circuit Judge.
    The three inter partes review (“IPR”) proceedings that
    gave rise to this consolidated appeal were previously
    considered in PPC Broadband, Inc. v. Corning Optical
    Communications RF, LLC (PPC I), 
    815 F.3d 734
     (Fed. Cir.
    2016). In PPC I, we vacated the Patent Trial and Appeal
    Board’s (“Board”) determination that the following claims
    are unpatentable and remanded for further proceedings:
    claims 8, 16, and 31 of 
    U.S. Patent No. 8,287,320
     (“the
    ’320 patent”), claims 1–9 of 
    U.S. Patent No. 8,323,060
    (“the ’060 patent”), and claims 7–27 of 
    U.S. Patent No. 8,313,353
     (“the ’353 patent”). In particular, we criticized
    the Board (1) for not making sufficient factual findings to
    support its conclusion that the combination of two prior
    art references would have made the limitations of these
    claims obvious; (2) for improperly concluding that patent
    owner PPC Broadband, Inc. (“PPC”) did not establish that
    its “SignalTight” connectors met all of the elements of the
    challenged claims for the purpose of giving rise to a
    presumption of commercial success; and (3) for failing to
    give due weight to PPC’s unrebutted evidence of copying
    and failure of others.
    The Board repeated these same errors on remand.
    We therefore vacate the Board’s determination that
    claims 8, 16, and 31 of the ’320 patent, claims 1–9 of the
    ’060 patent, and claims 7–27 of the ’353 patent are un-
    patentable, and remand once more for further proceed-
    ings.
    PPC BROADBAND, INC.   v. IANCU                              3
    I. BACKGROUND
    An overview of the patents and technical background
    is provided in PPC I. In relevant part, the ’320 patent
    family discloses coaxial cable connectors having a con-
    nector body 50, a post 40, a nut 30 (also called a “cou-
    pler”), and a “continuity member” that contacts the post
    and the nut so that electrical grounding continuity is
    extended through the post and the nut. ’320 patent, col.
    2, ll. 3–6, 15–19, 37–41. The claims at issue in this appeal
    include limitations that require the continuity member to
    “maintain electrical continuity” during certain specified
    periods of operation of the connector. PPC I, 815 F.3d at
    743. Independent claim 1 of the ’060 patent, for example,
    recites:
    1. A connector for coupling an end of a coaxial cable,
    . . . the connector comprising:
    ***
    a continuity member disposed only rearward of
    the forward facing lip surface of the internal lip of
    the coupler, the continuity member having a con-
    tinuity base portion extending between the conti-
    nuity post engaging surface of the post and the
    continuity body engaging surface of the connector
    body, and a continuity contact surface configured
    to be biased against the rearward facing lip sur-
    face of the internal lip of the coupler so as to
    maintain electrical continuity between the coupler
    and the post when the coupler is in the partially
    tightened position on the interface port, even when
    the coupler is in the fully tightened position on
    the interface port, and even when the post moves
    relative to the coupler.
    ’060 patent, col. 20, l. 57–col. 21, l. 39 (emphases added).
    Independent claims 7 and 20 of the ’353 patent recite
    methods of assembling a coaxial cable connector, the
    4                                 PPC BROADBAND, INC.    v. IANCU
    method comprising “positioning an electrical continuity
    member so as to . . . maintain electrical continuity be-
    tween the post and the nut when the post pivots relative
    to the nut.” ’353 patent, col. 22, ll. 12–48; id. at col. 23, l.
    43–col. 24, l. 24. Finally, dependent claims 8, 16, and 31
    of the ’320 patent require the continuity member to
    “maintain electrical continuity when the nut is in both the
    partially tightened position on the interface port and in
    the fully tightened position on the interface port.” ’320
    patent, col. 21, ll. 48–52; id. at col. 22, ll. 63–67; id. at col.
    24, ll. 40–44.
    Corning Optical Communications RF, LLC (“Corn-
    ing”) filed petitions requesting IPR of claims 1–32 of the
    ’320 patent, claims 1–9 of the ’060 patent, and claims 7–
    27 of the ’353 patent on grounds that these claims were
    unpatentable as obvious over the combination of U.S.
    published patent application 2006/0110977 (“Matthews”)
    and Japanese published patent application JP 2002–
    015823 (“Tatsuzuki”), among certain other grounds not at
    issue in this appeal. 1 Corning principally relied on the
    1    Corning participated in the appeal in PPC I and
    in the proceedings on remand, but withdrew as a party to
    this appeal after it reached a settlement with PPC. See
    Corning’s Unopposed Mot. to Withdraw (June 30, 2017),
    ECF No. 23; Order (July 10, 2017), ECF No. 24. The
    United States Patent and Trademark Office (“PTO”)
    intervened. At oral argument, PPC and the PTO stated
    that they waive any right to seek a remand for the Board
    to institute on all grounds challenged in Corning’s IPR
    petitions under SAS Institute, Inc. v. Iancu, 
    138 S. Ct. 1348
     (2018), and further stated they were not aware of
    Corning ever having made such a request. See Oral Arg.
    11:40–12:20,         27:54–28:15,       available     at
    http://oralarguments.cafc.uscourts.gov/default.aspx?
    fl=2017-1362.mp3. In PGS Geophysical AS v. Iancu, 891
    PPC BROADBAND, INC.   v. IANCU                            5
    declaration of its expert, Dr. Robert S. Mroczkowski,
    while PPC relied on the declaration of its expert, Dr.
    Charles A. Eldering. The Board instituted these IPR
    proceedings, and, after the parties’ experts were deposed,
    the Board issued final written decisions in which it de-
    termined that all challenged claims would have been
    obvious over the combination of Matthews and Tatsuzuki.
    PPC I, 815 F.3d at 739.
    In these decisions, the Board construed the “continui-
    ty member” limitation to require that the continuity
    member “make contact with the coupler/nut and the post
    to establish an electrical connection there,” but did not
    separately construe the “maintain electrical continuity”
    limitations. Id. at 740–45. The Board then relied on a
    proposed modification of Matthews with Tatsuzuki’s “disc-
    shaped spring” advanced by Dr. Mroczkowski to explain
    how the two references could be combined. See J.A. 1215–
    16, 1276–77, 1330–31. Finally, although the Board found
    that Corning both failed to manufacture connectors with a
    continuity member that could be sold to customers and
    copied PPC’s SignalTight connectors—factors that
    weighed in favor of non-obviousness—it concluded that,
    because PPC did not present persuasive evidence of
    commercial success, the collective objective indicia evi-
    dence did not outweigh the “strong evidence of obvious-
    ness.” PPC I, 815 F.3d at 746–47.
    Corning appealed the Board’s decisions to this court.
    We affirmed the Board’s unpatentability determinations
    F.3d 1354 (Fed. Cir. 2018), we held that partial-grounds
    institution is a waivable error on which we need not act
    “in the absence of an appropriate request for relief on that
    basis.” Id. at 1362 (citation omitted). We, thus, decline to
    vacate and remand solely for the Board to issue final
    written decisions addressing other grounds challenged in
    Corning’s IPR petitions.
    6                             PPC BROADBAND, INC.   v. IANCU
    as to the claims that lacked the “maintain electrical
    continuity” limitation, and we vacated the Board’s un-
    patentability determinations as to the “maintain electrical
    continuity” claims and remanded for further proceedings.
    We construed these claims to “require [that] the continui-
    ty member maintain electrical continuity when the cou-
    pler is in a certain position or during certain modes of
    operation,” and stated that “[m]aintaining electrical
    continuity requires consistent or continuous contact”
    under any relevant claim construction standard. Id. at
    744. We observed that, “[n]owhere in its decisions did the
    Board find that the combination of Matthews and Tatsu-
    zuki maintains electrical continuity during the specific
    positions or modes of operation required by these limita-
    tions,” and noted that the Board’s decisions in fact “sug-
    gest the opposite.” Id. In other words, we concluded that
    the Board’s decisions assumed that merely making con-
    tact on a non-continuous or intermittent basis would
    satisfy the relevant claim limitations, a conclusion we
    found inconsistent with the claims themselves. We then
    rejected Corning’s argument that we should nevertheless
    affirm the Board’s unpatentability determination as to
    these claims because the combination of Matthews and
    Tatsuzuki otherwise teaches these limitations, recogniz-
    ing that the “Board did not make any such fact findings.”
    Id.
    We also took issue with the Board’s objective indicia
    analysis. First, we clarified that Corning’s failure to
    manufacture connectors with a continuity member that
    could be sold to consumers and its decision to, instead,
    copy PPC’s SignalTight connectors weighed in favor of a
    finding of non-obviousness. Id. at 746. We then ex-
    plained that, because the evidence shows that the Signal-
    Tight connectors are “the invention disclosed and claimed
    in the patent,” we presume that any commercial success
    of these products is due to the patented invention. Id. at
    747 (quoting J.T. Eaton & Co. v. Atl. Paste & Glue Co.,
    PPC BROADBAND, INC.   v. IANCU                            7
    
    106 F.3d 1563
    , 1571 (Fed. Cir. 1997)). We expressly
    rejected the Board’s unexplained belief that “commercial
    success is not established where a product has a very
    large market share if that product was replacing the same
    party’s earlier version which likewise enjoyed a high
    market share,” noting “that it would be wrong to conclude
    that a product with a high market share is not commer-
    cially successful solely because it is replacing a similarly
    successful earlier version of the product produced by the
    same company.” 
    Id.
     at 747 n.3. Finally, we criticized the
    Board’s failure to weigh PPC’s unrebutted evidence of
    failed attempts by Corning to design a prototype coaxial
    cable with a continuity member and Corning’s copying.
    Id. at 746.
    On remand, the Board, after determining that no ad-
    ditional evidence was required, issued the three Decisions
    on Remand, again holding each of the claims reciting
    “maintain electrical continuity” limitations unpatentable
    over Matthews and Tatsuzuki. Relying solely on disclo-
    sures in Tatsuzuki and portions of Dr. Mroczkowski’s
    declarations—which did not address our construction of
    the maintain electrical continuity limitations—the Board
    found that Tatsuzuki’s disc-shaped spring 13, when
    positioned in the manner depicted in Exhibit 2007, “would
    maintain electrical connection between Matthews’s cou-
    pler/nut 30 and post 40 during [the] specified periods of
    operation of coaxial cable connector 100” required by the
    claim limitations. J.A. 25, 65, 98. It then criticized
    several aspects of PPC’s evidence of commercial success,
    purported to reweigh the objective indicia evidence, and
    once again concluded that the proffered objective indicia
    evidence was insufficient to overcome “Corning’s strong
    evidence of obviousness.” J.A. 33, 74, 106.
    PPC appeals. We have jurisdiction under 
    28 U.S.C. § 1295
    (a)(4).
    8                                PPC BROADBAND, INC.   v. IANCU
    II. DISCUSSION
    Obviousness is a question of law with underlying is-
    sues of fact. Randall Mfg. v. Rea, 
    733 F.3d 1355
    , 1362
    (Fed. Cir. 2013). We review the Board’s legal decisions de
    novo and its underlying factual determinations for sub-
    stantial evidence. Dynamic Drinkware, LLC v. Nat’l
    Graphics, Inc., 
    800 F.3d 1375
    , 1378 (Fed. Cir. 2015). A
    finding is supported by substantial evidence if a reasona-
    ble mind might accept the evidence to support the finding.
    In re Jolley, 
    308 F.3d 1317
    , 1320 (Fed. Cir. 2002). “In
    reviewing the record for substantial evidence, this court
    takes into account evidence that both justifies and de-
    tracts from the factual determinations.” In re Glatt Air
    Techniques, Inc., 
    630 F.3d 1026
    , 1029 (Fed. Cir. 2011).
    Finally, the Board, in reaching its decisions, must “make
    the necessary findings and have an adequate ‘evidentiary
    basis for its findings.’” In re Nuvasive, 
    842 F.3d 1376
    ,
    1382 (Fed. Cir. 2016) (quoting In re Lee, 
    277 F.3d 1338
    ,
    1344 (Fed. Cir. 2002)).
    A.
    We conclude that the Board has not sufficiently ex-
    plained its finding that Tatsuzuki’s disc-shaped spring 13,
    if located within Matthews’s connector in the manner
    proposed by Dr. Mroczkowski, “would maintain electrical
    connection between Matthews’s coupler/nut 30 and post
    40 during [the] specified periods of operation of coaxial
    cable connector 100” required by the claim limitations.
    J.A. 25, 65, 98. None of the evidence cited by the Board,
    which does not include Dr. Mroczkowski’s deposition
    testimony, supports a finding that the continuity member
    in the modified coaxial cable connector would make
    consistent contact with the post during these periods of
    operation.
    A comparison of the Board’s original final written de-
    cisions with its Decisions on Remand is instructive. In its
    first set of final written decisions, the Board relied on a
    PPC BROADBAND, INC.   v. IANCU                            9
    modification of Matthews with Tatsuzuki proposed by Dr.
    Mroczkowski to explain why the combined coaxial cable
    connector would meet the broader “continuity member”
    limitations. According to Dr. Mroczkowski, this modifica-
    tion entails placing Tatsuzuki’s disc-shaped spring 13 (the
    continuity member) inside the coaxial cable connector
    disclosed in Figure 1 of Matthews so that a portion of the
    spring “contacts the rearward facing surface H2 of the
    internal lip 36 of the coupler 30 and also extends between
    the continuity post engaging surface of the post 40 and
    the continuity body engaging surface of the body 50.” J.A.
    3185 ¶ 92. This proposed modification is depicted in
    PPC’s annotated Exhibit 2007, reproduced below:
    J.A. 1216 (IPR2013-00340 final written decision). The
    Board offered the following rationale to support its finding
    that the “continuity member” limitation would be met by
    this proposed combination:
    In considering the proposed incorporation of
    Tatsuzuki’s disc-shaped spring 13 into Matthews’s
    connector 100 shown in the illustration repro-
    duced above, we are satisfied that it establishes a
    continuity member positioned to make contact
    with surfaces of Matthews’s coupler/nut 30 and
    post 40 in the manner required by independent
    claim 1. In that regard, we conclude that Tatsu-
    zuki’s disc-shaped spring 13, when positioned in
    10                               PPC BROADBAND, INC.   v. IANCU
    the manner depicted, would extend between, and
    facilitate electrical connection among, surfaces of
    a coupler/nut and a post of a coaxial cable con-
    nector. Furthermore, we also credit Dr. Mrocz-
    kowski’s testimony to that effect. See, e.g., Ex.
    1007, ¶¶ 92, 93.
    J.A. 1216–17.
    In its Decisions on Remand, the Board determined
    that the narrower “maintain electrical continuity” limita-
    tions of the claims at issue would be met by the same
    proposed modification on the same evidence. The Board
    began by taking “th[e] opportunity to clarify” that find-
    ings in each of its original final written decisions were
    intended to “refer to maintaining electrical continuity
    between Matthews’s coupler/nut 30 and post 40 during
    specified periods of operation of coaxial cable connector
    100 that are required by” claims containing these limita-
    tions—perplexing “clarifications” given that the “maintain
    electrical continuity” limitations were not separately
    construed or analyzed in any of the Board’s final written
    decisions. J.A. 23, 62, 96. The Board went on to state
    that, “[i]n any event, taking into account the Federal
    Circuit’s guidance, and for the sake of completeness, we
    now make explicit fact findings as to how the combination
    of Matthews and Tatsuzuki teaches the ‘maintain electri-
    cal continuity’ limitation.” 
    Id.
    The fact-finding and reasoning in the Board’s Deci-
    sions on Remand are substantially similar to that con-
    tained in its first set of final written decisions, except that
    the three sentences reproduced in the block quote above
    are modified as follows:
    That is, we find that Tatsuzuki’s disc-shaped
    spring 13, when positioned in the manner depict-
    ed above, would maintain electrical connection be-
    tween Matthews’s coupler/nut 30 and post 40
    during certain specified periods of operation of co-
    PPC BROADBAND, INC.   v. IANCU                             11
    axial cable connector 100, such as when the cou-
    pler/nut is tightened partially or fully on interface
    port 20, and even when the post moves relative to
    the coupler/nut. Our finding in this regard is re-
    inforced further by the stated objective of Tatsu-
    zuki’s disc-shaped spring 13, which is to provide
    an electrical connection even in a loosened state.
    Ex. 1002 ¶¶ 7, 17. We also credit Dr. Mroczkow-
    ski’s testimony on this issue, particularly his
    statement that Corning’s proposed combination
    “would . . . maintain[] electrical continuity from
    the interface port to the coaxial cable.” Ex. 1007
    ¶ 93.
    J.A. 25 (IPR2013-00340 Decision on Remand). The only
    material differences between the Board’s fact-finding in
    its original final written decision and its Decision on
    Remand in IPR2013-00340 are that the latter (1) recites
    the language of the claim limitation at issue rather than
    the phrase “in the manner required by claim 1”;
    (2) describes the stated objective of Tatsuzuki’s disc-
    shaped spring as “provid[ing] an electrical connection
    even in a loosened state”; and (3) includes a “particularly”
    credited statement from Dr. Mroczkowski that his pro-
    posed combination “would . . . maintain[] electrical conti-
    nuity from the interface port to the coaxial cable.” The
    Decisions on Remand in the other IPR proceedings con-
    tain similar alterations.
    These minor, stylistic alterations are insufficient to
    rescue the Decisions on Remand, because the Board failed
    to offer a reasoned explanation why the proposed modifi-
    cation meets the “maintain electrical continuity” limita-
    tions—which require that the continuity member have
    “consistent or continuous contact” with the post. PPC I,
    815 F.3d at 744.
    We begin with Tatsuzuki. This reference discloses a
    disc-shaped spring 13 with an inner ring-shaped interface
    12                             PPC BROADBAND, INC.   v. IANCU
    portion 13a that is sized to slide over curling processed
    part 11f of main plug 11 during assembly so that it can be
    “accommodated” or “contained” in spring storage groove
    11e:
    J.A. 1519 ¶ 17, 1526–27. The disc-shaped spring there-
    fore connects the radial surface of rotary mounting ele-
    ment 12 (the “nut”) and the radial surface of spring
    storage groove 11e to form an electrical path between the
    two, acting as a spring in the horizontal (or axial) direc-
    tion such “that even if the rotary mounting element is
    loosened, it prevents connection of grounding from becom-
    ing incomplete.” Id. 1518 ¶¶ 11, 13. The Board’s finding
    that Tatsuzuki discloses a disc-shaped spring that is
    “purposed specifically to provide ‘electrical connection’
    between plug body 11 and rotary mounting element 12 of
    the connector” is consistent with these disclosures. J.A.
    23–24.
    The Board’s findings vis-à-vis the “maintain electrical
    continuity” limitations fail to consider sufficiently either
    Tatsuzuki’s disclosures or the experts’ testimony. Dr.
    Mroczkowski testified at his deposition that Tatsuzuki
    does not disclose a disc-shaped spring “in constant contact
    with the post,” agreeing with PPC that it is instead “ac-
    commodated in the groove.” J.A. 1957:21–25. He testi-
    fied, moreover, that Tatsuzuki only teaches “constant
    PPC BROADBAND, INC.   v. IANCU                           13
    contact between the nut and the body.” J.A. 1958:2–9
    (emphasis added). PPC’s expert, Dr. Eldering, similarly
    concluded that Tatsuzuki’s disc-shaped spring would not
    provide continuous contact with the post, but instead
    would provide only intermittent contact. J.A. 2988–89
    ¶¶ 82–83. Notwithstanding this undisputed evidence, the
    Board relied on Tatsuzuki’s “stated objective” of providing
    an electric connection even in a loosened state” to support
    its finding that the combination would include a continui-
    ty member that “maintains electrical continuity” with the
    post during the specified periods of operation. J.A. 25
    (citations omitted).
    The Board also relied on Dr. Mroczkowski’s opinion
    that his proposed combination “would . . . maintain[]
    electrical continuity from the interface port to the coaxial
    cable,” J.A. 25, but this opinion does not withstand scru-
    tiny. First, Dr. Mroczkowski offered this opinion in his
    initial declaration accompanying Corning’s IPR petitions,
    without the benefit of our construction of the “maintain
    electrical continuity” limitations. Second, to the extent
    one could plausibly interpret Dr. Mroczkowski’s opinion
    as evidence that the proposed modification would main-
    tain “consistent or continuous contact” between the conti-
    nuity member and the post during the modes of operation
    recited in the claims, PPC I, 815 F.3d at 743–44, the
    Board would have been required to explain how it reached
    this conclusion, see In re Lee, 
    277 F.3d 1338
    , 1346 (Fed.
    Cir. 2002) (holding that agency tribunals “must make
    findings of relevant facts, and present its reasoning in
    sufficient detail that the court may conduct meaningful
    review of the agency action”).
    At his deposition, Dr. Mroczkowski attempted to cure
    the aforementioned deficiencies in Tatsuzuki by theoriz-
    ing that its disc-shaped spring “could” be “press fit onto
    the post.” J.A. 1953:9:11, 1958:22–25, 1960:14–18. None
    of the Board’s Decisions on Remand cite any of Dr.
    Mroczkowski’s deposition testimony, nor do they include
    14                              PPC BROADBAND, INC.   v. IANCU
    any discussion of this “press fit” theory. Because the
    viability of this “press fit” theory is all that arguably could
    support the Board’s findings that the combination teaches
    the “maintain electrical continuity” limitations, the Board
    was required to “examine the relevant data and articulate
    a satisfactory explanation for its action including a ra-
    tional connection between the facts found and the choice
    made.” Nuvasive, 842 F.3d at 1382 (quoting Motor Vehi-
    cle Mfrs. Ass’n v. State Farm Mut. Auto. Ins. Co., 
    463 U.S. 29
    , 43 (1983)). It failed to do so. 2
    Dr. Mroczkowski, moreover, was cross-examined at
    length about this theory, during which he conceded a
    number of points relevant to his “press fit” theory, includ-
    ing, among others, that (1) “press fitting” is not disclosed
    in Tatsuzuki, J.A. 1958:10–18; (2) he did not mention
    “press fitting” in any of his declarations, J.A. 2318:9–
    22319:5; (3) Tatsuzuki describes its disc-shaped spring as
    being made of a “thin piece of metal,” J.A. 1959:17–
    1962:11; and (4) he had never done any press fit designs
    and would not know how “thin” the disc-shaped spring
    could be for it to be press fit onto the post, J.A. 1959:1–16.
    The Board did not address this testimony.
    The need to consider the merits of Dr. Mroczkowski’s
    “press fit” theory becomes even more relevant when one
    considers that Tatsuzuki expressly teaches that its disc-
    2  To the extent the PTO relies in its brief on factual
    findings not made by the Board, such as that “Tatsuzuki’s
    Figure 3 shows the inner circumference of its continuity
    member positioned in direct contact with the post portion
    of its unitary body and post, without any indication of
    gaps or intermittent contact,” Intervenor Br. 41–42 (foot-
    note omitted), we may not “accept appellate counsel’s post
    hoc rationalization for agency action,” In re Lee, 
    277 F.3d 1338
    , 1345 (Fed. Cir. 2002) (quoting Burlington Truck
    Lines, Inc. v. United States, 
    371 U.S. 156
    , 168 (1962)).
    PPC BROADBAND, INC.   v. IANCU                          15
    shaped spring “is not pressed to the point of becoming
    crushed flat and does not lose its spring operation.” J.A.
    at 1519 ¶ 17. Dr. Eldering testified both that Tatsuzuki
    “teaches away from such a press-fitting modification” and
    that press fitting Tatsuzuki’s disc-shaped spring onto the
    post “would substantially change [its] intended use and
    operation.” J.A. 2977 ¶ 54. Yet the Board did not consid-
    er either this disclosure in Tatsuzuki or any of Dr. Elder-
    ing’s opinions or challenges to Dr. Mroczkowski’s proposed
    modification in its Decisions on Remand. As such, the
    Board failed to point to evidence that a person of ordinary
    skill would have known that Tatsuzuki’s disc-shaped
    spring could be “press fit” onto the post, that a skilled
    artisan would have been motivated to pursue this modifi-
    cation, or that a skilled artisan could have succeeded in
    making this modification. “[T]he Board cannot simply
    reach conclusions based on its own understanding or
    experience—or on its assessment of what would be basic
    knowledge or common sense,” but instead “must point to
    some concrete evidence in the record in support of these
    findings.” In re Zurko, 
    258 F.3d 1379
    , 1386 (Fed. Cir.
    2001). The Board also must, consistent with its obliga-
    tions under the Administrative Procedure Act (“APA”),
    consider all evidence of record, including that which
    opposes its conclusions. See Princeton Vanguard, LLC v.
    Frito-Lay N. Am., Inc., 
    786 F.3d 960
    , 970 (Fed. Cir. 2015)
    (explaining that substantial evidence review “requires an
    examination of the record as a whole, taking into account
    both the evidence that justifies and detracts from an
    agency’s opinion” (quoting Falkner v. Inglis, 
    448 F.3d 1357
    , 1363 (Fed. Cir. 2006))).
    As noted above, moreover, the Board chose not to
    permit additional discovery on remand, notwithstanding
    that we construed the “maintain electrical continuity”
    limitations for the first time on appeal in PPC I. This is
    particularly salient given none of Dr. Mroczkowski’s
    testimony—on which the Board almost exclusively re-
    16                               PPC BROADBAND, INC.   v. IANCU
    lied—was offered with the benefit of our claim construc-
    tion.
    In PPC I, we concluded that the Board “did not make
    any” factual findings that the combination of Matthews
    and Tatsuzuki teaches the “maintain electrical continui-
    ty” limitations. 815 F.3d at 744. On remand, the Board
    sought to circumvent its fact-finding obligations. Where,
    as here, “the Board’s action is ‘potentially lawful but
    insufficiently or inappropriately explained,’ we have
    consistently vacated and remanded for further proceed-
    ings.” In re Van Os, 
    844 F.3d 1359
    , 1362 (Fed. Cir. 2017)
    (quoting In re Lee, 
    277 F.3d at 1346
    ). The same resulted
    is warranted here.
    B.
    Vacatur is alternatively proper based on the Board’s
    treatment of PPC’s evidence concerning objective indicia
    of non-obviousness. PPC first argues that the Board erred
    in rejecting the evidence of commercial success, claiming
    the Board ignored our instruction in PPC I not to reject
    such evidence “solely on th[e] ground” that the Signal-
    Tight connectors were a replacement for PPC’s earlier
    connectors that did not practice the claims. Appellant Br.
    40. It also claims that the Board erred in stating that it
    could not discern whether PPC’s other connectors had
    been discontinued and replaced by the new connectors, as
    the evidence clearly answered that question in the nega-
    tive. Id. at 44. We agree.
    “The objective indicia of non-obviousness play an im-
    portant role as a guard against the statutorily proscribed
    hindsight reasoning in the obviousness analysis.” WBIP,
    LLC v. Kohler Co., 
    829 F.3d 1317
    , 1328 (Fed. Cir. 2016).
    Indeed, we have held that such evidence “may often be
    the most probative and cogent evidence in the record.” 
    Id.
    (quoting Stratoflex, Inc. v. Aeroquip Corp., 
    713 F.2d 1530
    ,
    1538 (Fed. Cir. 1983)). “A determination of whether a
    patent claim is invalid as obvious under § 103 requires
    PPC BROADBAND, INC.   v. IANCU                           17
    consideration of all four Graham factors, and it is error to
    reach a conclusion of obviousness until all those factors
    are considered.” Id. (citing In re Cyclobenzaprine Hydro-
    chloride Extended-Release Capsule Patent Litig., 
    676 F.3d 1063
    , 1075 (Fed. Cir. 2012)).
    To prove commercial success as an objective indicator
    of non-obviousness, any commercial success of the product
    embodying the claims must “result[] from the claimed
    invention . . . beyond what was readily available in the
    prior art.” J.T. Eaton & Co., Inc. v. Atl. Paste & Glue Co.,
    
    106 F.3d 1563
    , 1571 (Fed. Cir. 1997). Moreover, if a
    patentee in an IPR can demonstrate commercial success—
    often shown by significant sales in a relevant market—
    and that the successful product is the invention disclosed
    and claimed in the patent, it is presumed that the com-
    mercial success is due to the patented invention. PPC I,
    815 F.3d at 747; Ecolochem, Inc. v. S. Cal. Edison Co., 
    227 F.3d 1361
    , 1378 (Fed. Cir. 2000). If the patentee meets
    these hurdles, the burden shifts to the challenger to prove
    that the commercial success is instead due to other fac-
    tors, such as advertising or superior workmanship.
    Ormco Corp. v. Align Tech., Inc., 
    463 F.3d 1299
    , 1311-13
    (Fed. Cir. 2006) (holding that evidence that success was
    due to prior art features rebutted the presumption).
    The Board failed to apply these principles properly. It
    claimed that it presumed a “nexus” between the claims
    and the SignalTight connectors, but determined that PPC
    failed to prove that these connectors were commercially
    successful. It reached this determination in the face of
    undisputed evidence that (1) PPC sold approximately 181
    million of these connectors in 2013 alone, generating
    nearly $50 million in revenue, J.A. 2934 ¶ 18; (2) in 2013,
    SignalTight connectors comprised 67% of the total con-
    nector market, with another 15% captured by Corning’s
    UltraShield connectors that copied PPC’s patented conti-
    nuity member; J.A. 2939 ¶ 25; and (3) SignalTight con-
    18                              PPC BROADBAND, INC.   v. IANCU
    nectors were “priced at a premium to non-continuity and
    other connectors available on the market,” J.A. 2936 ¶ 20.
    The Board found ways to discount this evidence, but
    none of its reasons pass muster. First, it inappropriately
    discounted PPC’s evidence that its SignalTight connectors
    were sold at a premium vis-à-vis its unpatented connect-
    ors. The Board’s reasoning is contrary to our decision in
    Transocean Offshore Deepwater Drilling, Inc. v. Maersk
    Drilling USA, Inc., 
    699 F.3d 1340
     (Fed. Cir. 2012). There,
    the district court rejected a jury finding that commercial
    success supported non-obviousness, writing that the
    success of Transocean’s products was “due primarily to
    various litigation[s],” and thus they “are not a result of a
    free market.” 699 F.3d at 1349–50. The prevailing party
    also had argued that “Transocean failed to tie its commer-
    cial success evidence to the claimed combination of two
    advancing stations with a pipe transfer assembly,” and
    “that unclaimed features of Transocean’s rigs, such as
    increased size and capacity, are responsible for any com-
    mercial success.” Id. at 1350. We disagreed on all fronts,
    writing that “Transocean needed to show both commercial
    success and that a nexus exists between that success and
    the merits of the claimed invention,” and that it presented
    sufficient evidence of both. Id. (citation omitted). Specifi-
    cally, we wrote that Transocean showed “that its dual-
    activity drilling rigs commanded a market premium over
    single-activity rigs” by “point[ing] to two contracts it
    signed on the same day . . ., one for a dual-activity drilling
    rig” for which it “charged a roughly 12% premium,” and
    “one for a single-activity rig.” Id. It also introduced other
    contracts that provided for reduced daily rates if the dual-
    activity feature on the rig was not available, and its
    damages expert “testified that the average reduction in
    this circumstance is 10%.” Id. Furthermore, it “presented
    evidence that some customers expressly require dual-
    activity rigs.” Id. “From this evidence,” we found that “a
    reasonable jury could conclude that Transocean’s dual-
    PPC BROADBAND, INC.   v. IANCU                           19
    activity rigs have been a commercial success and that this
    success has a nexus to the features claimed in the pa-
    tents.” Id.
    Here, as we explained in PPC I, because Corning did
    not dispute that PPC’s products practiced the claimed
    limitations and because PPC offered evidence of the
    commercial success of those products, the nexus we dis-
    cussed in Transocean should have been presumed, and, in
    the absence of evidence overcoming that presumption
    submitted by Corning, should have established conclu-
    sively the fact of commercial success. Though the Board
    gave lip service to the presumption we instructed it to
    apply, it then ignored it. Corning offered no evidence
    attacking PPC’s claim of commercial success; instead, it
    simply argued that, even if established, that success did
    not bar a finding of obviousness.
    Rather than treat this evidentiary failure for what it
    was and find that PPC had, indeed, made a sufficient
    showing of commercial success, it placed the burden on
    PPC (as it had in its original final written decisions) to
    show more. That was error.
    Putting aside this structural error, moreover, the
    Board misunderstood and, thus, gave insufficient weight
    to PPC’s evidence of commercial success. PPC presented
    evidence that customers chose to purchase its more expen-
    sive, patented SignalTight connectors than its unpatented
    EX connectors, and did so while maintaining PPC’s over-
    all share of the connector market. The Board wrote that
    “[t]his price premium comparison, however, is not suffi-
    ciently meaningful as an objective indicator of non-
    obviousness in the absence of more information or evi-
    dence regarding increase in market share,” J.A. 32, but
    did not explain why this should be the case. To the extent
    the Board required PPC to show that it obtained a higher
    market share after introducing the SignalTight connector
    than it had prior to such introduction, there is no authori-
    20                            PPC BROADBAND, INC.   v. IANCU
    ty for such a proposition. Maintaining market share with
    a price premium is also meaningful.
    The evidence instead suggests that PPC convinced
    customers to pay approximately 16% more for SignalTight
    connectors than they would have paid for “comparable EX
    non-continuity connectors,” and did so in the face of
    customers’ “extreme skepticism” about whether the
    “SignalTight® connectors would solve the loose connector
    continuity problem that had plagued the industry for
    many years.” J.A. 2934 ¶ 17. Other coaxial cables existed
    in the market, including PPC’s non-continuity EX con-
    nectors and Corning’s non-continuity and (copied) conti-
    nuity connectors, all of which customers could have
    purchased instead of PPC’s patented SignalTight connect-
    ors. Yet a significant number of buyers—67% of the total
    market—decided to purchase SignalTight connectors.
    The Board committed a second fundamental error in
    criticizing PPC’s evidence of overall market share. The
    Board reasoned that PPC’s data “suggests that at least a
    portion of the purported commercial success appears due
    to PPC’s pre-existing market share in the connector mar-
    ket, which seemingly provided a commercial advantage
    for any promotion of a new product, such as the Signal-
    Tight connectors.” J.A. 30–31 (emphases added). As
    support, it cited Geo. M. Martin Co. v. Alliance Machine
    Sys. Int’l ILC, 
    618 F.3d 1294
    , 1304 (Fed. Circ. 2010), for
    our statement that Alliance, the accused infringer, “con-
    clusively established that much of George Martin’s com-
    mercial success was due to Martin’s pre-existing market
    share in the stacker market, which, according to Martin’s
    president, gave it a ‘huge advantage’ in selling other
    products because it allowed Martin to sell a ‘single-source
    system,’” and that as a result, “this factor carries little
    weight.” Id. at 31. The reasoning of Martin therefore
    does not apply to the situation here, in which PPC’s
    evidence suggests a transition away from its unpatented
    PPC BROADBAND, INC.   v. IANCU                         21
    EX connectors to its more expensive, patented Signal-
    Tight connectors.
    Moreover, although it is certainly possible that PPC’s
    pre-existing market share from its EX connectors contrib-
    uted to sales of PPC’s more expensive SignalTight con-
    nectors, the burden rested with Corning, as the IPR
    petitioner, to make this showing. Indeed, in Martin, we
    determined in relevant part that the “commercial success”
    of George Martin’s stackers “carrie[d] little weight” be-
    cause “Alliance conclusively established that much of
    George Martin’s commercial success was due to Martin’s
    pre-existing market share in the stacker market.’” 
    618 F.3d at 1304
     (emphasis added). Corning, however, did not
    introduce any evidence, much less “conclusive” evidence,
    that “much” of the success of PPC’s SignalTight connect-
    ors was due to its earlier foothold in the marketplace.
    Viewed in this light, PPC’s unrebutted evidence that it
    was able to sell its SignalTight connectors at a premium
    above its EX connectors while maintaining its overall
    market share strongly supports the conclusion that cus-
    tomers valued the patented continuity member in its
    SignalTight connectors.
    At bottom, it appears that the Board repeated the
    same error on remand that it had committed in its final
    written decisions: concluding that PPC’s SignalTight
    connectors, which have a high market share, are “not
    commercially successful solely because [they are] replac-
    ing a similarly successful earlier version of the product
    produced by the same company.” PPC I, 815 F.3d at 747
    n.3. And, it did so without giving proper weight to the
    presumption of commercial success we instructed it to
    employ. As we explained in ClassCo, Inc. v. Apple, Inc.,
    
    838 F.3d 1214
    , 1222 (Fed. Cir. 2016), where a patent
    owner “present[s] unrebutted evidence that its products
    experienced some, albeit limited, commercial success, and
    that those products embodied the claimed features,” such
    22                             PPC BROADBAND, INC.   v. IANCU
    evidence must be weighed in the obviousness analysis and
    a “blanket dismissal of it” is error.
    PPC’s other arguments regarding objective indicia of
    non-obviousness pertain to the Board’s failure to properly
    consider PPC’s evidence of Corning’s failed attempts to
    manufacture coaxial cables with a continuity member
    that could be sold to consumers and its copying of PPC’s
    patented design. In its initial final written decisions, the
    Board determined that, although some of Corning’s efforts
    to design connectors with continuity members “failed”
    tests and although Corning “did not sell such connectors
    to customers for whatever reason,” it was “not persuaded”
    by PPC’s evidence of failed attempts by Corning because
    other prototype connectors passed these same tests. J.A.
    1231–32, 1239. It also determined that, although it was
    persuaded that Corning copied PPC’s SignalTight design,
    because “a showing of copying is only equivocal evidence
    of non-obviousness in the absence of more compelling
    objective indicia of other secondary considerations,” this
    evidence was insufficient to overcome “Corning’s strong
    evidence of obviousness.” J.A. 1234, 1239–40 (quoting
    Ecolochem, 
    227 F.3d at 1378
    ).
    On appeal, we clarified that Corning’s failure to man-
    ufacture connectors with a continuity member that could
    be sold to consumers weighed in favor of non-obviousness,
    as did the evidence of Corning’s copying. PPC I, 815 F.3d
    at 746. On remand, however, the Board stated only that
    it “t[ook] note of [its] prior assessment of the evidence
    presented by PPC in connection with purported long-felt
    but unresolved need, purported failed attempts by Corn-
    ing, and copying by Corning,” and found “once again” that
    such evidence did not outweigh “Corning’s strong evidence
    of obviousness.” J.A. 33. Putting aside questions of how
    evidence of obviousness and non-obviousness interact, the
    Board simply ignored our directive to give due weight to
    these indicia of non-obviousness in its obviousness analy-
    sis and the evidence that prompted it. It also appears
    PPC BROADBAND, INC.   v. IANCU                          23
    that the Board failed to reconsider the weight it initially
    gave PPC’s evidence of copying. Since it is now clear that
    such evidence does not stand alone, this evidence must be
    considered in conjunction with PPC’s showing of commer-
    cial success and Corning’s failure to manufacture con-
    nectors with a continuity member that could be sold to
    consumers. On remand, the Board must consider PPC’s
    objective indicia evidence anew and consider this evi-
    dence, which “may often be the most probative and cogent
    evidence in the record,” WBIP, 829 F.3d at 1328, along
    with its consideration of the other three Graham factors.
    III. CONCLUSION
    For the foregoing reasons, we vacate the Board’s de-
    termination that claims 8, 16, and 31 of the ’320 patent,
    claims 1–9 of the ’060 patent, and claims 7–27 of the ’353
    patent are unpatentable, and remand for further proceed-
    ings
    VACATED AND REMANDED
    COSTS
    Costs to PPC Broadband, Inc.