Acceleration Bay LLC v. Take-Two Interactive Software ( 2021 )


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  • Case: 20-1700    Document: 60     Page: 1    Filed: 10/04/2021
    United States Court of Appeals
    for the Federal Circuit
    ______________________
    ACCELERATION BAY LLC,
    Plaintiff-Appellant
    v.
    2K SPORTS, INC., ROCKSTAR GAMES, INC., TAKE-
    TWO INTERACTIVE SOFTWARE, INC.,
    Defendants-Appellees
    ______________________
    2020-1700
    ______________________
    Appeal from the United States District Court for the
    District of Delaware in No. 1:16-cv-00455-RGA, Judge
    Richard G. Andrews.
    ______________________
    Decided: October 4, 2021
    ______________________
    AARON M. FRANKEL, Kramer Levin Naftalis & Frankel
    LLP, New York, NY, argued for plaintiff-appellant. Also
    represented by CRISTINA MARTINEZ; PAUL J. ANDRE, JAMES
    R. HANNAH, LISA KOBIALKA, Menlo Park, CA.
    MICHAEL A. TOMASULO, Winston & Strawn LLP, Los
    Angeles, CA, argued for defendants-appellees. Also repre-
    sented by DAVID P. ENZMINGER; LOUIS CAMPBELL, Menlo
    Park, CA; GEOFFREY P. EATON, Washington, DC.
    ______________________
    Case: 20-1700    Document: 60      Page: 2    Filed: 10/04/2021
    2                                  ACCELERATION BAY LLC v.
    TAKE-TWO INTERACTIVE SOFTWARE
    Before MOORE, Chief Judge ∗, REYNA, and HUGHES, Circuit
    Judges.
    REYNA, Circuit Judge.
    This is an appeal from the U.S. District Court for the
    District of Delaware’s decisions construing certain claim
    terms in plaintiff-appellant Acceleration Bay LLC’s four
    asserted patents, U.S. Patent Nos. 6,701,344, 6,714,966,
    6,910,069, and 6,920,497, and granting defendant-appel-
    lees 2K Sports, Inc., Rockstar Games, Inc., and Take-Two
    Interactive Software, Inc.’s motion for summary judgment
    of non-infringement. We conclude that Acceleration Bay’s
    appeal is moot with respect to the ’344 and ’966 patents,
    and therefore we dismiss the appeal in part for lack of ju-
    risdiction. We further affirm the district court’s claim con-
    struction of the ’069 patent and its grant of summary
    judgment of non-infringement as to the ’069 and ’497 pa-
    tents.
    BACKGROUND
    The Patents-in-Suit
    Acceleration Bay asserted four patents that are at is-
    sue in this appeal: U.S. Patent Nos. 6,701,344 (“’344 Pa-
    tent”), 6,714,966 (“’966 Patent”), 6,910,069 (“’069 Patent”),
    and 6,920,497 (“’497 Patent”). The patents are unrelated
    but were filed on the same day, July 31, 2000, and share
    similar specifications. 1 The patents disclose a networking
    ∗    Chief Judge Kimberly A. Moore assumed the posi-
    tion of Chief Judge on May 22, 2021.
    1    The ʼ069 and ʼ497 patents have identical specifica-
    tions. The other two patents’ specifications differ in that
    the ’344 patent adds a section titled “Distributed Game En-
    vironment,” see ’344 patent col. 16 l. 29–col. 17 l. 11, and
    Case: 20-1700     Document: 60      Page: 3     Filed: 10/04/2021
    ACCELERATION BAY LLC v.                                       3
    TAKE-TWO INTERACTIVE SOFTWARE
    technology that allegedly improves upon pre-existing com-
    munication techniques because it is “suitable for the sim-
    ultaneous sharing of information among a large number of
    the processes that are widely distributed.” See ʼ344 patent
    col. 2 ll. 38–41. Specifically, the patents describe a “broad-
    cast technique in which a broadcast channel overlays a
    point-to-point communications network.” Id. at col. 4
    ll. 3–5.
    The ’344 and ’966 patents’ claims at issue—namely
    claims 12 to 15 of the ’344 patent and claims 12 and 13 of
    the ’966 patent—are drawn to networks that provide
    broadcast channels and information distribution services
    where participating computers (i.e., nodes) are connected
    and organized via a virtual network (i.e., overlay network).
    See ’344 patent col. 30 ll. 4–32; ’966 patent col. 30 ll. 36–57.
    Pertinent to this subject matter, the patents teach, for ex-
    ample, that an originating computer sends a message to its
    neighbors on the broadcast channel using point-to-point
    connections. ’344 patent at col. 4 ll. 26–32. Then each com-
    puter that receives the message sends it to its neighbors
    using point-to-point connections. Id. at col. 4 ll. 32–34. Re-
    quiring the computers to send the message only to their
    neighbors, rather than to all network participants, im-
    proves efficiency and reliability of communication because
    it reduces both the number of connections that each partic-
    ipant must maintain and the number of messages that
    each participant must send. See id. at col. 4 ll. 23–47; see
    also Appellant’s Br. 8–11. The technology also allegedly
    improves communication by using redundancy to avoid
    transmission errors. ’344 patent col. 7 ll. 50–51 (“The re-
    dundancy of the message sending helps to ensure the over-
    all reliability of the broadcast channel.”). Claim 12 of the
    the ʼ966 patent adds a section called “Information Delivery
    Service,” ’966 patent col. 16 l. 24–col. 17 l. 26. This opinion
    cites for convenience to the ’344 patent.
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    4                                 ACCELERATION BAY LLC v.
    TAKE-TWO INTERACTIVE SOFTWARE
    ’344 patent, which depends from claim 1, is representative
    of the ’344 patent’s claims at issue in this case. Those
    claims recite:
    1. A computer network for providing a game envi-
    ronment for a plurality of participants,
    each participant having connections to at least
    three neighbor participants,
    wherein an originating participant sends data to
    the other participants by sending the data through
    each of its connections to its neighbor participants
    and
    wherein each participant sends data that it re-
    ceives from a neighbor participant to its other
    neighbor participants,
    further wherein the network is m-regular, where m
    is the exact number of neighbor participants of
    each participant and
    further wherein the number of participants is at
    least two greater than m thus resulting in a non-
    complete graph.
    12. The computer network of claim 1 wherein the
    interconnections of participants form a broadcast
    channel for a game of interest.
    And asserted claims 12 and 13 of the ’966 patent are nearly
    identical to asserted claims 12 and 13 of the ’344 patent,
    containing no differences material to the outcome of the ap-
    peal. 2 ’966 patent col. 30 ll. 36–57.
    2   The ’966 patent’s asserted claims are different in
    that they refer to an “information delivery service” rather
    than a “game environment” or “game system”; “distributing
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    ACCELERATION BAY LLC v.                                     5
    TAKE-TWO INTERACTIVE SOFTWARE
    The ’069 patent’s claims 1 and 11, at issue in this ap-
    peal, are drawn to methods for adding participants to a net-
    work. ’069 patent col. 28 l. 48–col. 29 l. 25. The method
    involves, in simple terms, a computer seeking to join the
    network by contacting what is referred to as a “portal com-
    puter” on the network, which then sends a connection re-
    quest to certain of its neighbors. Claim 1 is representative 3
    and recites:
    1. A computer-based, non-routing table based, non-
    switch based method for adding a participant to a
    network of participants, each participant being
    connected to three or more other participants, the
    method comprising:
    identifying a pair of participants of the network
    that are connected wherein a seeking participant
    contacts a fully connected portal computer, which
    in turn sends an edge connection request to a num-
    ber of randomly selected neighboring participants
    to which the seeking participant is to connect;
    disconnecting the participants of the identified pair
    from each other; and
    connecting each participant of the identified pair of
    participants to the seeking participant.
    ’069 patent col. 28 ll. 48–62.
    information relating to a topic” rather than “playing a
    game”; and a “topic” rather than a “game.”
    3   Claim 11 depends from claim 1 and recites: “The
    method of claim 1 wherein the participants are connected
    via the Internet.” ’069 patent col. 29 ll. 24–25.
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    6                                  ACCELERATION BAY LLC v.
    TAKE-TWO INTERACTIVE SOFTWARE
    The ’497 patent’s claims at issue, namely claims 9 and
    16, cover a component for locating a call-in port 4 of a portal
    computer. According to the specification, dialing a port is
    a “relatively slow process” that takes time for the computer
    seeking to join the network to locate the call-in port of a
    portal computer. ’497 patent col. 11 ll. 58–60. To speed up
    the process, the patent teaches using a port ordering algo-
    rithm “to identify the port number order that a portal com-
    puter should use when finding an available port for its call-
    in port.” Id. at col. 11 ll. 60–64. Claim 9 is representative 5
    and recites:
    9. A component in a computer system for locating a
    call-in port of a portal computer, comprising:
    means for identifying the portal computer, the por-
    tal computer having a dynamically selected call-in
    port for communicating with other computers;
    means for identifying the call-in port of the identi-
    fied portal computer by repeatedly trying to estab-
    lish a connection with the identified portal
    computer through contacting a communications
    port or communications ports until a connection is
    successfully established;
    means for selecting the call-in port of the identified
    portal computer using a port ordering algorithm;
    and
    means for re-ordering the communications ports
    selected by the port ordering algorithm.
    4   The ’497 patent explains, for example, that a “call-
    in port is used to establish connections with the external
    port and the internal ports.” ’497 patent col. 6 ll. 40–41.
    5   Claim 16 depends from claim 9 and recites: “The
    component of claim 9 wherein the communications ports
    are TCP/IP ports.”
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    ACCELERATION BAY LLC v.                                     7
    TAKE-TWO INTERACTIVE SOFTWARE
    Id. at col. 30 ll. 16–30.
    Procedural History
    On June 17, 2016, Acceleration Bay filed a patent in-
    fringement suit against 2K Sports, Inc., Rockstar Games,
    Inc., and Take-Two Interactive Software, Inc. in the U.S.
    District Court for the District of Delaware. J.A. 550. Ac-
    celeration Bay accused the defendants of directly infring-
    ing the ’344, ’966, ’069, and ’497 patents, among others, by
    establishing networks for customers who play the video
    games called Grand Theft Auto V, NBA 2K15, and 2K16.
    See J.A. 573. Specifically, Acceleration Bay alleged that
    the accused video games’ software creates Take Two’s in-
    fringing virtual networks. J.A. 573 at ¶ 65; Appellant’s
    Br. 14.
    From 2017 to 2018, the district court issued a series of
    claim construction orders. 6 Pertinent to this appeal, in its
    August 29, 2017 order, the district court addressed the par-
    ties’ dispute concerning the proper construction of the term
    “m-regular,” which is a limitation in the claims-at-issue of
    the ’344 and ’966 patents. See J.A. 16. The district court
    largely adopted Take Two’s proposed construction but re-
    vised it to read as follows: “A state that the network is con-
    figured to maintain, where each participant is connected to
    exactly m neighbor participants.” Id. The district court
    explained that this construction
    does not require the network to have each partici-
    pant be connected to m neighbors at all times; ra-
    ther, the network is configured (or designed) to
    have each participant be connected to m neighbors.
    6   See J.A. 3–18 (Aug. 29, 2017 order); J.A. 19–24
    (Sept. 6, 2017 order); J.A. 25–49 (Dec. 20, 2017 order);
    J.A. 50–66 (Dec. 20, 2017 order); J.A. 67–70 (Dec. 28, 2017
    order); J.A. 71–93 (Jan. 17, 2018 order); J.A. 94–97
    (Jan. 24, 2018 order); J.A. 98–104 (Apr. 10, 2018 order).
    Case: 20-1700      Document: 60      Page: 8    Filed: 10/04/2021
    8                                   ACCELERATION BAY LLC v.
    TAKE-TWO INTERACTIVE SOFTWARE
    In other words, if the network does not have each
    participant connected to m neighbors, this is fine so
    long as, when appropriate, it tries to get to that
    configuration.
    Id.
    In the December 20, 2017 claim construction order, the
    district court construed “fully connected portal computer”
    in claim 1 of the ’069 patent largely consistent with Take
    Two’s proposed construction to mean “portal computer con-
    nected to exactly m neighbor participants.” J.A. 33. This
    construction meant, in other words, that the asserted
    claims effectively included the “m-regular” limitation. Ac-
    celeration Bay LLC v. Take-Two Interactive Software, Inc.,
    No. CV 16-455-RGA, 
    2020 WL 1333131
    , at *2 n.1 (D. Del.
    Mar. 23, 2020); J.A. 33–37.
    In the same order, the district court construed “each
    participant being connected to three or more other partici-
    pants,” also appearing in claim 1 of the ’069 patent, con-
    sistent with Take Two’s proposal to mean “each participant
    being connected to the same number of other participants
    in the network, where the number is three or more.”
    J.A. 38. The court again explained that this construction
    effectively included the “m-regular” limitation into the as-
    serted claims of the ’069 patent even though it was not ex-
    plicitly stated. J.A. 38–39.
    In its January 17, 2018 claim construction order, the
    district court construed the following term that appears in
    claim 9 of the ’497 patent: “a component in a computer sys-
    tem for locating a call-in port of a portal computer.” J.A. 90
    (emphasis added). The district court adopted Take Two’s
    construction: “a hardware component programmed to lo-
    cated [sic] a call-in port of a portal computer.” J.A. 90 (em-
    phasis added). The district court explained that the term
    requires hardware because Acceleration Bay had agreed in
    its proposed construction for other disputed terms that the
    term “component” requires hardware. J.A. 91.
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    ACCELERATION BAY LLC v.                                    9
    TAKE-TWO INTERACTIVE SOFTWARE
    On March 23, 2020, the district court granted summary
    judgment of non-infringement for all four patents-at-issue.
    See Acceleration Bay, 
    2020 WL 1333131
    . The court first
    addressed Acceleration Bay’s theory of direct infringement
    of the ’344, ’966, and ’497 patents by virtue of Take Two’s
    “making,” “selling,” and “offering to sell” the accused sys-
    tems under 
    35 U.S.C. § 271
    (a). Id. at *4. The court ex-
    plained that making a system under § 271(a) requires a
    single entity to combine all the claim elements and that, if
    a customer, rather than an accused infringer, performs the
    final step to assemble the system, then the accused in-
    fringer has not infringed. Id. (citing Centillion Data Sys.,
    LLC v. Qwest Commc’ns Int’l, Inc., 
    631 F.3d 1279
    , 1288
    (Fed. Cir. 2011)). Applying these principles to the ’344 and
    ’966 patents, the court observed that Take Two “make[s]
    software, not computer networks or broadcast channels”
    and that its customers must introduce those elements to
    the systems before the claims can be met. Id. at *4. The
    court also explained that the asserted claims of the ’344
    and ’966 patents require “participants” who form “connec-
    tions” with each other, and it is therefore the video game
    players, not Take Two, who assemble the claimed system.
    Id. Turning to the ’497 patent, the court explained that
    Take Two did not meet the “component” limitation in the
    ’497 patent’s asserted claims because “customers use their
    own hardware, such as an Xbox or personal computer, to
    locate the ‘call-in port of a portal computer.’” Id.
    The district court then rejected Acceleration Bay’s “fi-
    nal assembler” infringement theory with respect to the
    ’344, ’966, and ’497 patents ostensibly based on Centrak,
    Inc. v. Sonitor Technologies, Inc., 
    915 F.3d 1360
     (Fed. Cir.
    2019). 
    Id.
     The district court explained that, in Centrak,
    summary judgment was deemed inappropriate because,
    “although the defendant’s product did not include all the
    elements of the asserted claims, there was evidence that
    the defendant installed the accused product for its custom-
    ers.” 
    Id.
     But here, the district court reasoned, Acceleration
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    10                                ACCELERATION BAY LLC v.
    TAKE-TWO INTERACTIVE SOFTWARE
    Bay “has not alleged Defendants ever installed the video
    games for customers,” and therefore the case was con-
    trolled by Centillion, “in which the Federal Circuit found
    the defendant could not have infringed the patents because
    the customers installed the accused software themselves.”
    
    Id.
     (citing Centillion, 631 F.3d at 1288).
    The district court also determined that Take Two did
    not infringe the ’069 patent. The district court recalled
    that, although the asserted claims of the ’069 patent did
    not explicitly recite an “m-regular” limitation, the court
    had construed two separate terms, “fully connected portal
    computer” and “each participant being connected to three
    or more other participants,” as including the “m-regular”
    limitation. Acceleration Bay, 
    2020 WL 1333131
    , at *2 &
    n.1; J.A. 36, 38–39. The district court then explained that
    the critical question for purposes of the ’069 patent was
    whether the accused video games met the “m-regular” lim-
    itation. Acceleration Bay, 
    2020 WL 1333131
    , at *7. The
    court determined that Acceleration Bay had not carried its
    burden of showing a genuine dispute about whether the ac-
    cused video games are “‘configured to maintain’ networks
    where each participant is connected to exactly the same
    number of other participants,” as required by the district
    court’s construction of the term “m-regular.” 
    Id.
     Accelera-
    tion Bay’s experts, in their theories regarding Grand Theft
    Auto, did not identify “any source code that directs the par-
    ticipants to connect to the same number of other partici-
    pants.” Id. at *8. Regarding the NBA 2K video games, the
    court agreed with Take Two that the video games did not
    meet the “m-regular” limitation because the server that
    connects players’ computers or consoles (called a “Park Re-
    lay Server”) was itself a participant in the network and con-
    nected to all other network participants, rather than just
    m participants. Id. at *9. This argument was consistent
    with Acceleration Bay’s expert’s explanation that relay
    servers are participants in the network “because they can
    equally send and receive heartbeat data, lockstep data,
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    ACCELERATION BAY LLC v.                                    11
    TAKE-TWO INTERACTIVE SOFTWARE
    gameplay data, and VoIP data to other participants in the
    network.” Id.
    The district court further noted that the asserted
    claims of the ’344 and ’966 patents, like those of the ’069
    patent, include the term, “m-regular,” and therefore the ac-
    cused video games’ failure to meet that limitation meant
    that multiple independent grounds for summary judgment
    of non-infringement existed with respect to the ’344 and
    ’966 patents: failure to meet the “m-regular” limitation and
    failure to “make,” “sell,” or “offer to sell” the claimed sys-
    tems under § 271(a), as discussed above. Id. at *7.
    Acceleration Bay appealed the district court’s grant of
    summary judgment of non-infringement with respect to the
    ’344, ’966, ’497, and ’069 patents and its construction of the
    asserted claims of the ’069 patent. We have jurisdiction
    under 
    28 U.S.C. § 1295
    (a)(1).
    STANDARD OF REVIEW
    This Court reviews a district court’s grant of summary
    judgment under the law of the regional circuit, here the
    Third Circuit. Teva Pharm. Indus. Ltd. v. AstraZeneca
    Pharm. LP, 
    661 F.3d 1378
    , 1381 (Fed. Cir. 2011). The
    Third Circuit reviews a district court’s grant of summary
    judgment de novo. Azur v. Chase Bank, USA, Nat’l Ass’n,
    
    601 F.3d 212
    , 216 (3d Cir. 2010). We review a district
    court’s claim construction based solely on intrinsic evi-
    dence de novo and review a district court’s subsidiary fact-
    finding for clear error. Teva Pharms. USA, Inc. v. Sandoz,
    Inc., 
    574 U.S. 318
    , 331–32 (2015).
    DISCUSSION
    The ’344 and ’966 Patents
    Article III of the Constitution limits federal courts’ ju-
    risdiction to actual cases and controversies. U.S. Const.
    art. III, § 2, cl. 1; Simon v. E. Kentucky Welfare Rts. Org.,
    
    426 U.S. 26
    , 37 (1976) (“No principle is more fundamental
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    12                                 ACCELERATION BAY LLC v.
    TAKE-TWO INTERACTIVE SOFTWARE
    to the judiciary’s proper role in our system of government
    than the constitutional limitation of federal-court jurisdic-
    tion to actual cases or controversies.”). “A case becomes
    moot—and therefore no longer a ‘Case’ or ‘Controversy’ for
    purposes of Article III—when the issues presented are no
    longer ‘live’ or the parties lack a legally cognizable interest
    in the outcome.” Already, LLC v. Nike, Inc., 
    568 U.S. 85
    ,
    91 (2013) (internal quotation marks and citation omitted).
    It is well established that an appeal should be dismissed as
    moot when it is impossible to grant the appellant “any ef-
    fectual relief whatever.” See, e.g., Nasatka v. Delta Sci.
    Corp., 
    58 F.3d 1578
    , 1580 (Fed. Cir. 1995) (citation omit-
    ted); Calderon v. Moore, 
    518 U.S. 149
    , 150 (1996) (“It is
    true, of course, that mootness can arise at any stage of liti-
    gation; that federal courts may not give opinions upon moot
    questions or abstract propositions; and that an appeal
    should therefore be dismissed as moot when, by virtue of
    an intervening event, a court of appeals cannot grant any
    effectual relief whatever in favor of the appellant.” (cita-
    tions omitted)). The test for mootness is whether the relief
    sought, if granted, would “make a difference to the legal
    interests of the parties (as distinct from their psyches,
    which might remain deeply engaged with the merits of the
    litigation).” Nasatka, 
    58 F.3d at 1580
     (citation omitted).
    Take Two argues that Acceleration Bay’s appeal with
    respect to the ’344 and ’966 patents is moot and should
    therefore be dismissed because Acceleration Bay only chal-
    lenges one of multiple independent grounds that the dis-
    trict court articulated for granting summary judgment.
    Appellees’ Br. 30. Specifically, according to Take Two, the
    district court granted summary judgment because (1) the
    accused video games do not meet the “m-regular” limita-
    tion, and (2) Acceleration Bay’s theory that Take Two di-
    rectly infringes because it is the “final assembler” of the
    claimed networks failed for lack of case law support. Id.;
    see also Acceleration Bay, 
    2020 WL 1333131
    , at *4, *7.
    Take Two argues that Acceleration Bay’s opening brief only
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    ACCELERATION BAY LLC v.                                    13
    TAKE-TWO INTERACTIVE SOFTWARE
    addresses the second of these summary judgment grounds.
    As a result, Take Two contends, this court cannot grant Ac-
    celeration Bay “effectual relief” even if it agreed with Ac-
    celeration Bay’s “final assembler” theory because a
    reversal on that issue would leave the district court’s sum-
    mary judgment grant intact on the separate “m-regular”
    ground. Appellees’ Br. 31–32.
    In reply, Acceleration Bay does not dispute that the dis-
    trict court granted judgment on the independent “m-regu-
    lar” ground. See Appellant’s Reply Br. 11. Instead,
    Acceleration Bay argues that this court’s reversal on the
    “final assembler” issue would grant Acceleration Bay effec-
    tual relief, and thereby avoid mootness, because it would
    help Acceleration Bay oppose Take Two’s forthcoming “ex-
    ceptional case motion.” 
    Id.
     We are not persuaded. Accel-
    eration Bay has forfeited any challenge to the district
    court’s grant of summary judgment of non-infringement on
    the basis that the accused products fail to satisfy the “m-
    regular” limitation of the ’344 and ’966 patents’ asserted
    claims. In re Google Tech. Holdings LLC, 
    980 F.3d 858
    , 862
    (Fed. Cir. 2020) (defining forfeiture as “the failure to make
    the timely assertion of a right” (citation omitted)). As a re-
    sult of Acceleration Bay’s forfeiture, its appeal with respect
    to the ’344 and ’966 patents is moot because we are unable
    to grant Acceleration Bay effectual relief. Even if we were
    to agree that its “final assembler theory” is viable as a mat-
    ter of law, our reversal on that issue would leave the dis-
    trict court’s grant of summary judgment of non-
    infringement intact. In Nasatka, we rejected the appel-
    lant’s argument that the appeal was not moot because a
    favorable ruling would impact the parties’ positions on the
    appellee’s then-pending motion for attorney fees under
    
    35 U.S.C. § 285
    . 
    58 F.3d at 1581
    . We discern no reason to
    decide otherwise here. Our advisory validation or rejection
    of Acceleration Bay’s “final assembler” theory is not re-
    quired for the district court to conduct the exceptional case
    analysis.
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    14                                 ACCELERATION BAY LLC v.
    TAKE-TWO INTERACTIVE SOFTWARE
    Acceleration Bay also argues that a favorable decision
    would impact “at least two co-pending cases before the
    same District Court for all three patents.” Appellant’s Re-
    ply Br. 11–12. Again, we are not persuaded that an impact
    on other cases between Acceleration Bay and third parties
    confers jurisdiction. At least two of our sister circuits have
    observed that “collateral consequences in a separate law-
    suit . . . does not fall within any exception to the mootness
    doctrine . . . .” Citizens for Responsible Gov’t State Pol. Ac-
    tion Comm. v. Davidson, 
    236 F.3d 1174
    , 1184 (10th Cir.
    2000) (quoting State of Neb. v. Cent. Interstate Low-Level
    Radioactive Waste Compact Comm’n, 
    187 F.3d 982
    , 987
    (8th Cir. 1999)). Acceleration Bay cites no case where such
    consequences were determined to fall within an exception
    to the mootness doctrine. See Appellant’s Reply Br. 11–12.
    We accordingly reject Acceleration Bay’s argument with re-
    spect to the ’344 and ’966 patents on the basis of mootness.
    We therefore lack jurisdiction over this appeal with respect
    to those patents.
    The ’069 Patent
    Acceleration Bay challenges the district court’s grant of
    summary judgment of non-infringement of the ’069 patent
    by arguing that the asserted claims do not explicitly con-
    tain any “m-regular” limitation, and the district court erro-
    neously interpreted the claim term “fully connected portal
    computer” to include that limitation.            Appellant’s
    Br. 32–43. 7
    7   Specifically, Acceleration Bay argues that the dis-
    trict court’s construction erroneously imported a “m-regu-
    lar” limitation from the specification into the claim
    language “fully connected portal computer,” 
    id.
     at 36–38;
    that it improperly excludes non-m-regular embodiments,
    
    id.
     at 38–40; and that it violates the principle of claim
    Case: 20-1700    Document: 60     Page: 15    Filed: 10/04/2021
    ACCELERATION BAY LLC v.                                   15
    TAKE-TWO INTERACTIVE SOFTWARE
    Take Two responds that Acceleration Bay’s appeal fails
    because it does not challenge the district court’s full basis
    for construing the ’069 patent’s asserted claims to include
    the “m-regular” limitation. Take Two points out that the
    district court did not only construe the term “fully con-
    nected portal computer” to include the limitation, but it
    also construed the term “each participant being connected
    to three or more other participants” to include it. Appel-
    lees’ Br. 41–42. Because Acceleration Bay does not chal-
    lenge the district court’s latter construction, Take Two
    argues that the appeal necessarily fails. 
    Id.
     at 41–43. We
    agree.
    Even considering Acceleration Bay’s arguments re-
    garding the construction of the term “fully connected portal
    computer,” the district court’s grant of summary judgment
    would remain intact because the district court interpreted
    a separate term in the ’069 patent’s asserted claims to in-
    clude the “m-regular” limitation. See J.A. 38–39. We can
    affirm a district court’s summary judgment of non-infringe-
    ment if the accused infringer “remains entitled to judgment
    as a matter of law despite an error in claim construction.”
    Innovad Inc. v. Microsoft Corp., 
    260 F.3d 1326
    , 1334–36
    (Fed. Cir. 2001). We do so again here.
    The ’497 Patent
    Acceleration Bay argues that it has asserted a viable
    “final assembler” theory of direct infringement based on
    Centrak, and therefore the district court erred in granting
    summary judgment of non-infringement. Acceleration Bay
    contends that, even though Take Two does not “make” the
    hardware that its customers use to play the accused video
    games, it nevertheless directly infringes by “making” the
    claimed systems because Take Two qualifies as the “final
    differentiation because certain claims in the ’069 patent do
    explicitly recite an m-regular limitation, 
    id.
     at 40–43.
    Case: 20-1700    Document: 60     Page: 16    Filed: 10/04/2021
    16                                ACCELERATION BAY LLC v.
    TAKE-TWO INTERACTIVE SOFTWARE
    assembler” of the “accused systems.”            Appellant’s
    Br. 30–32. Specifically, Acceleration Bay contends that
    Take Two’s accused software “controls the processors” in
    the customers’ consoles, “caus[ing] the processors to act in
    a way that satisfies the four means elements recited in
    claim 9 of the ’497 patent.” Id. at 31.
    Acceleration Bay misapprehends Centrak. In Centrak,
    the accused infringer made hardware products and in-
    stalled them by connecting them to an existing network.
    915 F.3d at 1371. The plaintiff there had a viable theory—
    called a “final assembler” theory—that the defendant di-
    rectly infringed a claim because, even though the defend-
    ant did not make some of the existing network components,
    it “made” the claimed system when it installed its own
    hardware onto the existing network, thereby completing
    the claimed system. Id.
    This case is distinguishable from Centrak. Accelera-
    tion Bay does not contend that Take Two makes hardware
    and installs it onto an existing network to complete the
    claimed system. See Appellant’s Br. 30–32. Instead, Ac-
    celeration Bay proffers a novel theory, without case law
    support, that the defendants are liable for “making” the
    claimed hardware components, even though they are in
    fact made by third parties, because their accused software
    runs on them. Id. at 31–32. We disagree and conclude that
    Centillion controls here, where “[t]he customer, not [Take
    Two], completes the system by providing the [hardware
    component] and installing the client software.” 631 F.3d
    at 1288. We therefore hold that the district court did not
    err in granting summary judgment of non-infringement as
    to the ’497 patent.
    CONCLUSION
    For the above reasons, we dismiss Acceleration Bay’s
    appeal on mootness grounds insofar as it relates to the ’344
    and ’966 patents, and we affirm the district court’s grant of
    summary judgment that the accused video games do not
    Case: 20-1700   Document: 60     Page: 17    Filed: 10/04/2021
    ACCELERATION BAY LLC v.                                 17
    TAKE-TWO INTERACTIVE SOFTWARE
    infringe the ’069 and ’497 patents and the district court’s
    construction of the claims at issue of the ’069 patent. We
    have considered Acceleration Bay’s remaining arguments
    but find them unpersuasive.
    DISMISSED-IN-PART AND AFFIRMED-IN-PART
    COSTS
    No costs.