Bosch Automotive Service Solutions, LLC v. Matal , 878 F.3d 1027 ( 2017 )


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  •   United States Court of Appeals
    for the Federal Circuit
    ______________________
    BOSCH AUTOMOTIVE SERVICE SOLUTIONS,
    LLC,
    Appellant
    v.
    JOSEPH MATAL, PERFORMING THE FUNCTIONS
    AND DUTIES OF THE UNDER SECRETARY OF
    COMMERCE FOR INTELLECTUAL PROPERTY
    AND DIRECTOR, U.S. PATENT AND TRADEMARK
    OFFICE,
    Intervenor
    ______________________
    2015-1928
    ______________________
    Appeal from the United States Patent and Trademark
    Office, Patent Trial and Appeal Board in No. IPR2014-
    00183.
    ______________________
    Decided: December 22, 2017
    ______________________
    TIMOTHY M. MCCARTHY, Clark Hill, PLC, Chicago, IL,
    argued for appellant. Also represented by DAVID J. MARR.
    FRANCES LYNCH, Office of the Solicitor, United States
    Patent and Trademark Office, Alexandria, VA, argued for
    intervenor. Also represented by THOMAS W. KRAUSE,
    ROBERT MCBRIDE, SCOTT WEIDENFELLER.
    2                         BOSCH AUTOMOTIVE SERVICE v. MATAL
    ______________________
    Before NEWMAN, CHEN, and HUGHES, Circuit Judges.
    CHEN, Circuit Judge.
    This appeal arises from the inter partes review (IPR)
    of 
    U.S. Patent No. 6,904,796
     (the ’796 patent) owned by
    Bosch Automotive Service Solutions LLC (Bosch). The
    Patent Trial and Appeal Board (Board) granted the IPR
    petition filed by Autel U.S. Inc. and Autel Intelligent
    Technology Co. Ltd. (Autel) and instituted the IPR on
    claims 1, 4–15, and 20–22 of the ’796 patent. Bosch filed
    a patent owner response and a “contingent” motion to
    amend, seeking to substitute amended claims 23–38 for
    original claims 1, 4–15, and 20–22 in the event that the
    Board found the challenged claims unpatentable. In its
    final decision, the Board found all challenged claims
    unpatentable and also denied Bosch’s contingent motion
    to amend. Autel U.S. Inc. v. Bosch Auto. Serv. Sols. LLC,
    No. IPR2014-00183, 
    2015 WL 2149218
     (P.T.A.B. May 5,
    2015) (Final Written Decision). Bosch now appeals. 1 For
    the reasons below, we affirm the Board’s finding of un-
    patentability of claims 1, 4–15, and 20–22, and we vacate
    and remand its denial of Bosch’s motion to amend as to
    proposed substitute claims 23–38.
    BACKGROUND
    I.    The ’796 Patent
    The ’796 patent, titled “Remote Tire Monitoring Sys-
    tem,” relates to a handheld tool for (i) activating remote
    tire pressure monitoring system (RTMS) tire sensors and
    1   After Bosch filed its opening brief, Autel informed
    the court that it would not participate in the appeal. The
    Director of the United States Patent and Trademark
    Office intervened to defend the Board’s decision.
    BOSCH AUTOMOTIVE SERVICE    v. MATAL                        3
    (ii) communicating with a vehicle’s RTMS receiving unit.
    See ’796 patent col. 1, ll. 6–8; col. 2, ll. 49–63. RTMS
    sensors measure air pressure in each of a vehicle’s tires
    and, when activated, communicate pressure and other
    tire-specific information to a receiving unit in the vehicle
    via radio frequency (RF) signals. 
    Id.
     col. 1, ll. 16–23. The
    RTMS receiving unit can then use that information to
    alert the driver, via visual or audible alarm, of a specific
    tire characteristic such as low tire pressure. 
    Id.
     col. 1, ll.
    25–32.
    According to the ’796 patent, different manufacturers
    in the RTMS field use different types of devices and/or
    signals for activating RTMS tire sensors, including mag-
    nets, valve core depressors, continuous wave signals, and
    modulated signals. 
    Id.
     col. 4, l. 33 – col. 6, l. 32. These
    manufacturers also use different methods to transmit
    data from the tire sensor to the receiving unit, including
    RF signals at particular frequencies including 315 MHz,
    433 MHz, and 916 MHz. 
    Id.
     col. 2, ll. 38–48. The ’796
    patent’s claimed activation tool is intended to work with
    all of these known RTMS architectures; it incorporates,
    into a single, handheld tool, all the known, different ways
    to activate RTMS tire sensors as well as the different
    ways known to communicate with a vehicle’s receiving
    unit. 
    Id.
     col. 2, ll. 49–63. The ’796 patent contends that
    “[i]n this manner, a technician tasked to install a new tire
    or to rotate tires can utilize a single tool to work with
    remote tire monitoring systems made by different manu-
    facturers.” 
    Id.
     col. 2, ll. 60–63. When a technician moves
    from working on one vehicle to another vehicle that has a
    different RTMS activation system, the technician can
    simply switch between different modes of operation using
    a switch on the tool. 
    Id.
     col 10, l. 66 – col. 11, l. 2.
    The ’796 patent recites various apparatus claims
    drawn to this universal activation tool and method claims
    for using the tool. Claim 1 is representative of the
    claimed apparatus:
    4                      BOSCH AUTOMOTIVE SERVICE v. MATAL
    1. A tool comprising a plurality of means for acti-
    vating remote tire monitoring system tire sensors,
    the plurality of means selected from the group
    consisting of a magnet, a valve core depressor,
    means for generating continuous wave signals,
    and means for generating modulated signals,
    wherein the tool is capable of activating a plurali-
    ty of tire sensors, each of the plurality of tire sen-
    sors utilizing a different method for activating the
    said tire sensor.
    
    Id.
     col. 12, l. 64 – col. 13, l. 4. Method claim 20 is repre-
    sentative of the functions the claimed tool performs, i.e.,
    activating the sensor, receiving data from the tire sensor,
    and transmitting the tire sensor data to the RTMS’s
    receiving unit:
    20. A method, comprising the steps of:
    activating a remote tire monitoring system tire
    sensor;
    receiving a tire sensor signal containing data from
    the activated tire sensor; and
    transmitting some or all of the data received from
    the tire sensor to a remote tire monitoring system
    receiving unit, wherein the activating step, the re-
    ceiving step, and the transmitting step are all per-
    formed by a single tool, and wherein the tool
    comprises a plurality of means for activating re-
    mote tire monitoring system tire sensors.
    
    Id.
     col. 16, ll. 1–10 (as amended by Certificate of Correc-
    tion dated Oct. 11, 2005).
    II. IPR Institution and Prior Art
    On May 7, 2014, the Board instituted review of claims
    1, 4–15, and 20–22 of the ’796 patent based on Autel’s
    BOSCH AUTOMOTIVE SERVICE   v. MATAL                      5
    petition alleging unpatentability on multiple obviousness
    and anticipation grounds. 2      Those grounds included
    claims 1 and 4–14 as likely obvious over the combination
    of European Patent Publication No. 1 026 015 A2 (McClel-
    land), U.S. Patent Application Publication No.
    2003/0080862 (Kranz), U.S Patent No. 6,414,592 (Dixit),
    and British Patent No. 2305074 (Howell). The Board also
    instituted review of claim 15 as likely obvious in view of
    the same combination of McClelland, Kranz, Dixit, and
    Howell, plus two additional references. And it instituted
    review of claims 20–22 as likely anticipated by and, in the
    alternative, obvious over, McClelland alone.
    A.   McClelland
    McClelland describes an RTMS for monitoring inter-
    nal pressure of a vehicle’s tires and transmitting tire
    pressure readings via RF transmission to a receiving unit
    located in the vehicle. The McClelland RTMS is shown in
    Figure 1, reproduced below:
    2    Autel also sought review of, and the Board insti-
    tuted on, claim 16. However, that claim was cancelled
    during the IPR and is not at issue in this appeal.
    6                    BOSCH AUTOMOTIVE SERVICE v. MATAL
    As shown in Figure 1, each tire (T) has its own tire
    monitor 12 that transmits tire pressure signals to the
    receiving unit 14. Receiving unit 14 provides a warning
    to the operator of the vehicle when the indicated tire
    pressure of any tire is outside a predetermined range.
    McClelland activates each tire monitor 12 using a
    signal from an exciter unit 16, comprised of a low fre-
    quency transmitter circuit 20, high frequency receiver
    unit 22, and memory 26. McClelland discloses using a
    low frequency signal of approximately 125 kHz for acti-
    vating the tire monitors and also states that “other fre-
    quencies or ranges of frequencies may be suitable.” J.A.
    626. According to McClelland, the exciter unit 16 may be
    a handheld unit carried by a service technician and
    brought near the tires for activation of each tire monitor,
    BOSCH AUTOMOTIVE SERVICE    v. MATAL                     7
    during assembly or servicing of the vehicle. In particular,
    “[t]he operator may, for example, press a button or other-
    wise activate the exciter [16] to energize the tire monitor
    [12] and provide an activation signal.” J.A. 629. In
    response to an activation signal, the tire monitor 12
    transmits tire-specific information to the exciter unit 16.
    The exciter unit 16 then communicates that information
    to the receiving unit 14.
    B.    Kranz
    Kranz similarly discloses a system referred to as a
    reader for determining whether the tires on a vehicle
    have low pressure. The Kranz reader transmits a modu-
    lated frequency signal to activate and request pressure
    information from RF tags co-located with the tires. The
    RF tags process the request and transmit tire infor-
    mation—including pressure and an RF tag ID correspond-
    ing to a particular tire—back to the reader. Kranz
    discloses that, in one embodiment, the reader is a
    handheld unit with an integrated display.
    C.    Dixit
    Dixit discloses a tire condition sensor unit 18 at each
    tire to transmit sensed tire conditions (such as tempera-
    ture and pressure) and tire location information to a
    vehicle-based central unit. Dixit Figure 2, reproduced
    below, shows a handheld transmitter tool 44 for com-
    municating with RF receiver 46 associated with each tire
    condition sensor unit 18.
    8                    BOSCH AUTOMOTIVE SERVICE v. MATAL
    Dixit explains that the handheld transmitter com-
    municates with each of the different tire condition sensor
    units for a particular vehicle. Dixit also contemplates
    that the handheld transmitter “communicate[s] with tire
    condition sensor units within different tire condition
    communication systems at different vehicles.” According
    to Dixit, the handheld transmitter is designed to serve as
    a “universal tool” that can communicate information to
    various tire condition sensor units, regardless of sensor
    type.
    D.   Howell
    Howell seeks to address the problem caused by the
    proliferation of different, incompatible radio frequency
    identification (RFID) tags and transponders, like those
    employed in RTMS systems.         Howell explains that
    “[c]urrently, there is no common carrier modulation and
    data transmission system agreed between manufacturers
    for such transponders and the systems chosen by different
    manufacturers of tags and readers vary widely and are
    generally incompatible with one another.” As a result, “a
    reader made by one manufacturer for reading a particular
    BOSCH AUTOMOTIVE SERVICE   v. MATAL                     9
    type of tag or transponder will not normally be able to
    read tags or transponders manufactured by another
    supplier.” Given the absence of a single communication
    standard, Howell teaches a handheld reader for determin-
    ing “the modulation system and/or data transmission
    system of a data storage device thereby allowing data
    stored by different manufacturer’s data storage devices to
    be read.” In other words, Howell teaches a handheld tool
    designed to communicate with tags and transponders
    from different manufacturers.
    E.   Claim Construction
    In its Institution Decision, the Board construed cer-
    tain “means-plus-function” limitations of the challenged
    claims. Relevant to this appeal, the Board determined
    that the structures disclosed in the specification corre-
    sponding to the recited “means for activating remote tire
    monitoring system tire sensors” (in independent claims 1,
    7, 9, 13, and 15) are: a magnet, a valve core depressor,
    and a frequency generating circuitry and microprocessor
    for generating and transmitting continuous wave signals
    and modulated signals. The Board also construed a
    “plurality of means” for activating these tire sensors (in
    independent claims 1, 7, 9, 11, 13, and 15) as two or more
    means.
    III. Patent Owner’s Response and
    Contingent Motion to Amend
    In Bosch’s Patent Owner Response, Bosch acknowl-
    edged that the ’796 patent’s disclosed and claimed “means
    for activating” tire sensors were all known in the prior
    art, but it argued there was no motivation to combine
    these different, known activation means into the claimed
    universal tool. Bosch also argued that objective indicia—
    including commercial success, licensing, and industry
    praise—support the ’796 patent’s nonobviousness.
    10                      BOSCH AUTOMOTIVE SERVICE v. MATAL
    Bosch simultaneously filed a Contingent Motion to
    Amend, wherein it proposed to amend certain claims by
    inserting “means for recording” and “means for selecting”
    limitations, in the event the Board found the original
    claims unpatentable.     Proposed substitute claim 23,
    intended to replace claim 1, is representative of the pro-
    posed changes to the apparatus claims and is shown
    below with the newly added language underlined:
    23. A tool comprising:
    a plurality of means for activating remote tire
    monitoring system tire sensors, the plurality of
    means selected from the group consisting of a
    magnet, a valve core depressor, means for gener-
    ating continuous wave signals, means for generat-
    ing modulated signals, means for recording a most
    recent means for activating signal that was uti-
    lized to successfully activate a tire sensor, and
    means for selecting the recorded means for acti-
    vating as the first means for activating to be used,
    wherein the tool is capable of activating a plurali-
    ty of tire sensors, each of the plurality of tire sen-
    sors utilizing a different method for activating the
    said tire sensor.
    J.A. 923. Proposed substitute claim 36, intended to
    replace claim 20, is representative of the proposed chang-
    es to the method claims:
    36. A method, comprising the steps:
    activating a first remote tire monitoring system
    tire sensor using a one of a plurality of means for
    activating remote tire monitoring system tire sen-
    sors, the plurality of means selected from the
    group consisting of a magnet, a valve core de-
    pressor, means for generating continuous wave
    signals, and means for generating modulated sig-
    nals;
    BOSCH AUTOMOTIVE SERVICE   v. MATAL                      11
    receiving a tire sensor signal containing data from
    the activated first tire sensor;
    recording the one of the plurality of means for ac-
    tivating; and
    transmitting some or all of the data received from
    the first tire sensor to a remote tire monitoring
    system receiving unit, and
    activating a second remote tire monitoring system
    tire sensor using the recorded means for activat-
    ing;
    wherein the activating step, the receiving step,
    the recording steps, and the transmitting step are
    all performed by a single tool, and wherein the
    tool comprises a plurality of means for activating
    remote tire monitoring system tire sensors.
    J.A. 929.
    IV. Final Written Decision
    In the Final Written Decision, the Board concluded
    that all challenged claims were unpatentable and denied
    Bosch’s contingent motion to amend.
    As to claims 1 and 4–14, the Board held that it would
    have been obvious to a person of ordinary skill in the art
    to incorporate McClelland’s continuous wave activation
    signal and Kranz’s modulated activation signal into a
    single activation tool to minimize the number of tools that
    a technician needs to use for collecting tire pressure data
    from different vehicles that use different means for acti-
    vating RTMS tire sensors. The Board pointed to the
    universal tools taught by Dixit and Howell for motivation
    to create a similar universal tool that would result from
    combining McClelland and Kranz. The Board also held
    that the additional disclosure of two-way communication
    between the tool and receiving unit, found in claim 15,
    was rendered obvious by McClelland, Kranz, Dixit, and
    12                    BOSCH AUTOMOTIVE SERVICE v. MATAL
    Howell in combination with additional tertiary references.
    Finally, the Board found method claims 20–22 both
    anticipated and obvious in view of McClelland’s tool,
    which can use multiple activation frequencies (e.g., 125
    kHz, “other frequencies,” and other “ranges of frequen-
    cies”) and, therefore, discloses a “plurality of means for
    activating” sensors. The Board also found Bosch’s assert-
    ed objective indicia to be both lacking a sound evidentiary
    foundation and untethered from the claims of the ’796
    patent.
    The Board then denied Bosch’s contingent motion to
    amend. First, the Board found that the proposed appa-
    ratus claims were indefinite because the ’796 specification
    fails to disclose sufficient structure corresponding to the
    claimed “means for recording a most recent means for
    activating signal that was utilized to successfully activate
    a tire sensor.” Second, the Board found that Bosch failed
    to carry its burden of proof that the proposed substitute
    claims would have been patentable over the prior art.
    Bosch filed a timely appeal of the Board’s decision.
    We have jurisdiction under 
    28 U.S.C. § 1295
    (a)(4)(A).
    DISCUSSION
    We review the Board’s decisions under the standards
    set forth in the Administrative Procedure Act (APA), 
    5 U.S.C. § 706
    . Pride Mobility Prods. Corp. v. Permobil,
    Inc., 
    818 F.3d 1307
    , 1313 (Fed. Cir. 2016). We must set
    aside the Board’s actions if they are “arbitrary, capricious,
    an abuse of discretion, or otherwise not in accordance
    with law” or “unsupported by substantial evidence.” 
    5 U.S.C. § 706
    (2). We review the Board’s legal conclusions
    de novo and its factual findings for substantial evidence.
    In re Gartside, 
    203 F.3d 1305
    , 1316 (Fed. Cir. 2000). A
    finding of fact is supported by substantial evidence if a
    reasonable mind might accept the evidence as adequate
    support for the finding. Consol. Edison Co. v. NLRB, 
    305 U.S. 197
    , 229 (1938).
    BOSCH AUTOMOTIVE SERVICE    v. MATAL                       13
    I.   Claims 1 and 4–15
    Bosch first challenges the Board’s determination that
    claims 1 and 4–15 are unpatentable as obvious. Bosch
    argues the Board erred in (1) finding a motivation to
    combine McClelland, Kranz, Howell, and Dixit; 3 and
    (2) disregarding Bosch’s evidence of nonobviousness.
    A claim is unpatentable if the differences between the
    claimed subject matter and the prior art are such that the
    subject matter as a whole would have been obvious at the
    time the invention was made to a person having ordinary
    skill in the art. 
    35 U.S.C. § 103
    ; 4 KSR Int’l Co. v. Teleflex
    Inc., 
    550 U.S. 398
    , 406 (2007). “Obviousness is a question
    of law based on underlying findings of fact.” Merck & Cie
    v. Gnosis S.P.A., 
    808 F.3d 829
    , 833 (Fed. Cir. 2015), cert.
    3   For claim 15, Bosch argues only that “because
    there exists no proper motivation for initially combining
    McClelland, Kranz, Dixit, and Howell to support a finding
    of obviousness [of claim 1], it is also improper to combine
    these references with or without Pacsai ’467 and Gaborit
    to find that claim 15 is obvious.” Bosch Opening Br. 47–
    48. Bosch does not independently argue the patentability
    of claim 15, and therefore, it stands or falls with claims 1
    and 4–14. See In re Kaslow, 
    707 F.2d 1366
    , 1376 (Fed.
    Cir. 1983) (“Since the claims are not separately argued,
    they all stand or fall together.”).
    4  Congress amended § 103 when it passed the
    Leahy-Smith America Invents Act (AIA). Pub. L. No.
    112–29, § 3(c), 
    125 Stat. 284
    , 287 (2011). Because the
    application that led to the ’796 patent has never contained
    a claim having an effective filing date on or after March
    16, 2013 (the effective date of the statutory changes
    enacted in 2011), or a reference under 
    35 U.S.C. §§ 120
    ,
    121, or 365(c) to any patent or application that ever
    contained such a claim, the pre-AIA § 103 applies. Id.
    § 3(n)(1), 125 Stat. at 293.
    14                    BOSCH AUTOMOTIVE SERVICE v. MATAL
    denied, 
    137 S. Ct. 297
     (2016). The underlying findings of
    fact include the scope and content of the prior art, the
    differences between the prior art and the claimed inven-
    tion, whether there is a motivation to combine prior art
    references, the level of ordinary skill in the art, and
    relevant objective indicia of nonobviousness. 
    Id.
    A.   Motivation to Combine
    Bosch argues that those skilled in the art at the time
    of invention lacked motivation to combine the various,
    known activation means for activating tire sensors into
    one handheld tool. We disagree.
    As Bosch concedes, each of the claimed means of
    RTMS sensor activation was known in the prior art. For
    example, McClelland discloses a tool that activates RTMS
    tire sensors using a continuous wave signal, and Kranz
    discloses an activation tool using modulated signals.
    Dixit and Howell both recognize that different manufac-
    turers use sensors that are not compatible with a single
    tool and both references disclose a single, handy tool
    having the versatility to communicate with sensors by
    different manufacturers. Based on these disclosures, the
    Board reasonably found that an ordinarily skilled artisan
    would have been motivated by the known compatibility
    issues in the art of RTMS systems and the known solution
    of a universal communication tool disclosed by both Dixit
    and Howell to combine the different activation means of
    McClelland and Kranz into a single universal tool. Sub-
    stantial evidence supports this finding.
    Bosch’s principal challenge to the Board’s motivation
    to combine reasoning is that “the type of system and tool
    of Dixit was so objectively very different from the device of
    the ’796 patent, that there would be no contemporaneous
    motivation nor design need to combine the teachings of
    Dixit with the other cited references.” Bosch’s Opening
    Br. 41. Bosch contends that because Dixit’s tool only
    programs the various tire sensors with information and
    BOSCH AUTOMOTIVE SERVICE   v. MATAL                      15
    does not trigger the sensors to respond, Dixit’s disclosure
    would be irrelevant to a person of skill in the art looking
    to create a universal activation tool. Bosch’s characteriza-
    tion of Dixit’s tool is not incorrect, but its argument is
    unpersuasive.
    Dixit, like McClelland and Kranz, relates to handheld
    RTMS tools. Thus, it is from the same field of endeavor
    as McClelland, Kranz, and the ʼ796 patent and is “rea-
    sonably pertinent to the particular problem with which
    the inventor is involved.” In re Bigio, 
    381 F.3d 1320
    , 1325
    (Fed. Cir. 2004). That Dixit does not disclose a universal
    RTMS activation tool (which would make Dixit an antici-
    patory reference) or provide an express motivation to
    combine different means for activating RTMS sensors
    does not render its teachings irrelevant. See EWP Corp.
    v. Reliance Universal Inc., 
    755 F.2d 898
    , 907 (Fed. Cir.
    1985) (“A reference must be considered for everything it
    teaches by way of technology and is not limited to the
    particular invention it is describing and attempting to
    protect.”) (emphasis in original). Dixit discloses the
    proliferation of different RTMS tire sensors during the
    relevant time and teaches the benefit of using one “gener-
    ic or universal tool” to “communicate with tire condition
    sensor units within different tire condition communica-
    tion systems at different vehicles.” J.A. 651. The Board
    properly recognized that “[e]ven though Dixit itself ad-
    dressed the issue of only transmitting a data signal to a
    transponder for storage in an associated memory, as
    opposed to transmitting and receiving a response signal,
    . . . the general problem of disparate RTMS communica-
    tion components and protocols was known and defined in
    the prior art.” J.A. 26. Thus, substantial evidence sup-
    ports the Board’s finding that Dixit teaches the advantage
    of having a universal tool in the RTMS environment that
    can communicate with tire sensors in different RTMS
    systems. That finding is relevant to the obviousness
    inquiry because, when combined with the known problem
    16                        BOSCH AUTOMOTIVE SERVICE v. MATAL
    of incompatible RTMS transmission protocols, it provides
    a rational underpinning for the skilled artisan’s combina-
    tion of multiple activation means into a single tool.
    B.    Objective Indicia
    Bosch next argues that the Board failed to properly
    credit Bosch’s objective indicia of nonobviousness. Accord-
    ing to Bosch, it presented persuasive evidence of commer-
    cial success, licensing, and industry praise that
    establishes the patentability of the ’796 patent claims.
    “Evidence of [objective indicia] is only relevant to the
    obviousness inquiry ‘if there is a nexus between the
    claimed invention and the [objective indicia].’” In re
    Affinity Labs of Tex., LLC, 
    856 F.3d 883
    , 901 (Fed. Cir.
    2017) (quoting Ormco Corp. v. Align Tech., Inc., 
    463 F.3d 1299
    , 1312 (Fed. Cir. 2006)). To determine whether a
    nexus exists, “[o]ur cases require consideration of whether
    ‘the marketed product embodies the claimed features.’”
    ClassCo, Inc. v. Apple, Inc., 
    838 F.3d 1214
    , 1222 (Fed. Cir.
    2016) (quoting Brown & Williamson Tobacco Corp. v.
    Philip Morris Inc., 
    229 F.3d 1120
    , 1130 (Fed. Cir. 2000));
    see also Pro-Mold & Tool Co. v. Great Lakes Plastics, Inc.,
    
    75 F.3d 1568
    , 1573 (Fed. Cir. 1996) (noting whether the
    requisite nexus exists is a question of fact).
    i.        Commercial Success
    Bosch relied on two pieces of evidence to establish
    commercial success: (i) the declaration of Mr. Patrick
    Pierce, Bosch’s director of marketing and diagnostic
    product management; and (ii) claim charts comparing
    commercially sold reset tools to the claims of the ’796
    patent.
    We agree with the Board that the Pierce declaration
    lacks a proper evidentiary foundation. Mr. Pierce states
    in his declaration that Bosch makes several models of
    reset tools and asserts, without explanation, that he
    “understand[s] that all of Bosch’s reset tools are covered
    BOSCH AUTOMOTIVE SERVICE   v. MATAL                      17
    by the ’796 Patent.” J.A. 592. Mr. Pierce also states that
    Bosch licensed the ’796 patent to two other companies,
    Bartec and ATEQ, in addition to selling its own reset tools
    and that “Bosch had achieved by 2011, through sales of its
    own products and licensed products, 89 percent of the
    United States market.” J.A. 594. As the Board recog-
    nized, however, the Pierce declaration lacks any explana-
    tion or analysis to support his asserted “understand[ing]”
    that these commercial reset tools are covered by, or coex-
    tensive with, the claims of the ’796 patent. The Board
    permissibly concluded that this conclusory testimony
    lacks foundation. See, e.g., In re Cree, Inc., 
    818 F.3d 694
    ,
    703–04 (Fed. Cir. 2016) (agreeing with the Board that an
    expert declaration that merely repeats, in conclusory
    fashion, that the success of the product is due to the
    claimed invention is insufficient to establish a nexus).
    We also agree with the Board that Bosch’s second
    piece of support, the claim charts, is flawed. In comparing
    claim 1 to one of Bosch’s reset tools, the chart apparently
    relies on a “Quick Start Guide” for Bosch’s Part No. 3833
    as evidentiary support for the features of a particular
    Bosch reset tool. The Board properly recognized, howev-
    er, that the cited Quick Start Guide was not filed as an
    exhibit nor was there any other testimony or evidence
    corroborating the contents of the Quick Start guide.
    Thus, the Board concluded that the claim chart both
    violates the rule against hearsay and lacks foundation.
    Moreover, the Board noted that Bosch submitted no
    evidence comparing Bosch’s other allegedly successful
    reset tools to the claims. The Board also found that
    Bosch’s remaining claim charts, which sought to compare
    Bartec’s AirAware 21240 and ATEQ’s VT 55 products to
    claim 1 similarly violate the rule against hearsay and lack
    foundation. We review such evidentiary rulings under the
    abuse of discretion standard. REG Synthetic Fuels, LLC
    v. Neste Oil Oyj, 
    841 F.3d 954
    , 958 (Fed. Cir. 2016) (re-
    viewing Board’s hearsay finding in IPR proceeding under
    18                    BOSCH AUTOMOTIVE SERVICE v. MATAL
    abuse of discretion). Having reviewed these claim charts,
    and finding them lacking in foundation, we see no error in
    the Board’s decision not to credit them.
    ii.   Licensing
    Bosch presented evidence that two companies—ATEQ
    and Bartec—licensed the ’796 patent as part of agree-
    ments to settle litigation. We have explained, however,
    that the mere fact of licensing, without more, is generally
    not a strong indication of nonobviousness if it cannot also
    be shown that the licensees did so out of respect for the
    patent rather than to avoid litigation expense. See Iron
    Grip Barbell Co. v. USA Sports, Inc., 
    392 F.3d 1317
    , 1324
    (Fed. Cir. 2004). “Our cases specifically require affirma-
    tive evidence of nexus where the evidence of commercial
    success presented is a license, because it is often ‘cheaper
    to take licenses than to defend infringement suits.’” 
    Id.
    (quoting EWP Corp, 
    755 F.2d at 908
    ).
    Here, both of the licenses relied on by Bosch were ad-
    mittedly entered into for the express purpose of settling
    litigation. There is no evidence in the record that these
    agreements arose out of a recognition and acceptance of
    the merits of the claimed invention, rather than solely to
    avoid the costs of defending against further litigation.
    Given the lack of evidence that these licenses were en-
    tered into out of respect for the ’796 patent, it was rea-
    sonable for the Board to assign less credit to the licensing
    evidence. See Iron Grip, 392 F.3d at 1324 (noting that
    licenses “may constitute evidence of nonobviousness;
    however, only little weight can be attributed to such
    evidence if the patentee does not demonstrate a nexus
    between the merits of the invention and the licenses of
    record” (quoting In re GPAC Inc., 
    57 F.3d 1573
    , 1580 (Fed.
    Cir. 1995))).
    BOSCH AUTOMOTIVE SERVICE     v. MATAL                  19
    iii.     Industry Praise
    Finally, Bosch asserts that its RTMS tool garnered
    industry praise and awards, demonstrating its nonobvi-
    ousness. In particular, Bosch submitted evidence that its
    3834 and 3834EZ tools received two “Top 20 Tool” awards
    from an industry magazine. As with Bosch’s other objec-
    tive indicia arguments, the Board found that Bosch did
    not tie these tools to the claims of the ’796 patent. We
    agree. Just as with Bosch’s evidence of commercial suc-
    cess, Bosch presented no evidence to establish that the
    tools receiving these awards fall within the claimed
    subject matter of the ’796 patent.
    iv.    Conclusion on Obviousness
    Based on our review of the entirety of the record, we
    conclude that the Board did not err in its obviousness
    determination and that substantial evidence supports its
    factual findings underpinning its conclusions. We there-
    fore affirm the Board’s decision that claims 1 and 4–15
    are unpatentable as obvious.
    II. Claims 20–22
    Bosch next argues that the Board erred in finding
    claims 20–22 unpatentable as anticipated because
    McClelland does not disclose the requisite plurality of
    means for activating sensors. According to Bosch, McClel-
    land contemplates using only one means for activating the
    sensors—a 125 kHz signal. And it contends McClelland’s
    assertion that “other frequencies or ranges of frequencies
    may be suitable” is insufficient to support a finding of
    anticipation because that phrase does not describe the
    invention at the level of complete detail found in the
    claims.
    We disagree. The ’796 patent states that “each differ-
    ent frequency of [continuous wave] signal generated [by
    the tool] constitutes a different means for activating
    RTMS tire sensors.” ’796 patent col. 5, ll. 27–30. Alt-
    20                    BOSCH AUTOMOTIVE SERVICE v. MATAL
    hough McClelland explains that the preferred embodi-
    ment transmits a 125 kHz continuous wave signal, it also
    contemplates that exciter unit 16 can also transmit at
    “other frequencies,” and, in particular, transmit signals
    using “ranges of frequencies.” J.A. 626. We therefore find
    that substantial evidence supports the Board’s finding
    that McClelland discloses the requisite plurality of activa-
    tion means, as that term is used in the ’796 patent.
    Because we affirm the Board’s finding of anticipation, we
    do not address the Board’s alternative finding that claims
    20–22 are also obvious.
    III. Motion to Amend
    Because we affirm the Board’s decision that the origi-
    nal claims are unpatentable, we next address Bosch’s
    argument that the Board erred in denying its contingent
    motion to amend. We review that denial under the APA,
    
    5 U.S.C. § 706
    . Microsoft Corp. v. Proxyconn, Inc., 
    789 F.3d 1292
    , 1306 (Fed. Cir. 2015). We set aside the
    Board’s action if it is “arbitrary, capricious, an abuse of
    discretion, or otherwise not in accordance with law.” 
    5 U.S.C. § 706
    (2)(A). The Board rejected proposed amended
    claims 23–35 as indefinite under 
    35 U.S.C. § 112
    , ¶ 2 5 and
    proposed amended claims 36–38 as unpatentable over the
    prior art. Among other arguments, Bosch challenged the
    Board’s rejection of both sets of proposed amended claims
    on the grounds that the Board impermissibly placed the
    burden on Bosch to establish patentability.
    5  Paragraphs 2 and 6 of 
    35 U.S.C. § 112
     were re-
    placed by § 112(b) and § 112(f) respectively when the AIA
    took effect. Because the application resulting in the ’796
    patent was filed before that date, we refer to the pre-AIA
    version of § 112. See AIA § 4(c), (e), 125 Stat. at 296–97.
    BOSCH AUTOMOTIVE SERVICE   v. MATAL                      21
    A.   Proposed Substitute Claims 23–35
    Proposed substitute claims 23–35 all include the add-
    ed means-plus-function limitation of “means for recording
    a most recent means for activating signal that was uti-
    lized to successfully activate a tire sensor.” The Board
    concluded that this means-plus-function limitation could
    not be construed and thus was indefinite because the
    portions of the figures and written description on which
    Bosch relied for the disclosure of an algorithm for per-
    forming the recited function lacked sufficient disclosure. 6
    Paragraph 6 of 
    35 U.S.C. § 112
     allows “[a]n element in
    a claim for a combination” to “be expressed as a means or
    step for performing a specified function without the
    recital of structure, material, or acts in support thereof,
    and such claim shall be construed to cover the correspond-
    ing structure, material, or acts described in the specifica-
    tion and equivalents thereof.” However, for a claim
    element recited in means-plus-function format, “the
    specification must contain sufficient descriptive text by
    which a person of skill in the field of the invention would
    ‘know and understand what structure corresponds to the
    means limitation.’” Typhoon Touch Techs., Inc. v. Dell,
    6    Bosch did not raise the issue either before the
    Board or on appeal of whether the Board has the statuto-
    ry authority to reject proposed amended claims that
    introduce indefinite language on § 112 grounds. This
    issue is thus not before us. We do note that inter partes
    review is the successor to inter partes reexamination, see
    Cuozzo Speed Techs., LLC v. Lee, 
    136 S. Ct. 2131
    , 2137
    (2016), and that in the inter partes reexamination con-
    text, we have observed that it was appropriate to raise
    § 112 challenges to proposed amended claims. See In re
    NTP, Inc., 
    654 F.3d 1268
    , 1276 n.6 (Fed. Cir. 2011) (citing
    
    37 C.F.R. §§ 1.552
    (a) (ex parte reexamination), 1.906(a)
    (inter partes reexamination)).
    22                     BOSCH AUTOMOTIVE SERVICE v. MATAL
    Inc., 
    659 F.3d 1376
    , 1383–84 (Fed. Cir. 2011) (quoting
    Finisar Corp. v. DirecTV Grp., Inc., 
    523 F.3d 1323
    , 1340
    (Fed. Cir. 2008)). When no structure in the specification
    is linked to the function in a means-plus-function claim
    element, that claim is indefinite under 
    35 U.S.C. § 112
    ,
    ¶ 2. AllVoice Computing PLC v. Nuance Commc’ns, Inc.,
    
    504 F.3d 1236
    , 1241 (Fed. Cir. 2007) (“[A] means-plus-
    function clause is indefinite if a person of ordinary skill in
    the art would be unable to recognize the structure in the
    specification and associate it with the corresponding
    function in the claim.”).
    Compliance of a means-plus-function claim with the
    definiteness requirement of § 112, ¶ 2 is a question of law
    which may involve underlying factual findings. See Biosig
    Instruments, Inc. v. Nautilus, Inc., 
    783 F.3d 1374
    , 1377–
    78 (Fed. Cir.), cert. denied, 
    136 S. Ct. 569
     (2015); BASF
    Corp. v. Johnson Matthey Inc., No. 2016-1770, 
    2017 WL 5559629
    , at *3 (Fed. Cir. Nov. 20, 2017). We review the
    overarching legal question de novo and any related factu-
    al findings for substantial evidence. Biosig, 783 F.3d at
    1378; Gartside, 
    203 F.3d at 1316
    .
    We have previously held that a party challenging pa-
    tent validity on indefiniteness grounds carries the burden
    of proof. See, e.g., Chicago Bd. Options Exch., Inc. v. Int’l
    Sec. Exch., LLC, 
    748 F.3d 1134
    , 1141 (Fed. Cir. 2014). In
    Aqua Products, Inc. v. Matal, this Court recently ruled
    that the patent owner does not bear the burden of proof
    on the patentability of its proposed amended claims. 
    872 F.3d 1290
     (Fed. Cir. 2017). Rather, the petitioner bears
    the burden of proving that the proposed amended claims
    are unpatentable “by a preponderance of the evidence.”
    
    35 U.S.C. § 316
    (e). This burden of proof allocation applies
    for questions of indefiniteness, as with other questions of
    unpatentability.
    In this case, the Board impermissibly assigned the
    burden of proof on the issue of indefiniteness to Bosch.
    BOSCH AUTOMOTIVE SERVICE   v. MATAL                      23
    See J.A. 46, 49 (“[W]e determine that Bosch has not met
    its burden . . . .”). For that reason, we vacate the Board’s
    denial of Bosch’s contingent motion to amend with respect
    to proposed claims 23–35 and remand for the Board to
    evaluate the patentability of those proposed amended
    claims consistent with our direction in Aqua Products.
    See Aqua Products, 872 F.3d at 1311 (“[W]here the chal-
    lenger ceases to participate in the IPR and the Board
    proceeds to final judgment, it is the Board that must
    justify any finding of unpatentability by reference to the
    evidence of record in the IPR.”) (O’Malley, J.) (emphasis in
    original).
    B.   Proposed Substitute Claims 36–38
    The Board also impermissibly assigned the burden of
    proof to Bosch as to proposed claims 36–38. In its final
    decision, the Board concluded that it was “unpersuaded
    that Bosch has demonstrated that the proposed substitute
    claims are patentable” over the prior art. J.A. 51. Citing
    its “informative” decision in Idle Free Systems, Inc. v.
    Bergstrom, Inc., No. IPR2012-00027, 
    2013 WL 5947697
    (P.T.A.B. June 11, 2013), the Board stated that “[t]he
    patent owner bears the burden of proof in demonstrating
    patentability of the proposed substitute claims over the
    prior art in general, and, thus, entitlement to add these
    claims to its patent.” 
    Id.
     For the same reasons as stated
    above, we vacate the Board’s denial of Bosch’s contingent
    motion to amend with respect to proposed claims 36–38
    and remand for the Board to evaluate the patentability of
    those proposed amended claims consistent with our
    direction in Aqua Products. See Aqua Products, 872 F.3d
    at 1311 (“[W]here the challenger ceases to participate in
    the IPR and the Board proceeds to final judgment, it is the
    Board that must justify any finding of unpatentability by
    reference to the evidence of record in the IPR.”) (O’Malley,
    J.) (emphasis in original).
    24                   BOSCH AUTOMOTIVE SERVICE v. MATAL
    CONCLUSION
    For the foregoing reasons, we affirm the Board’s deci-
    sion that claims 1, 4–15, and 20–22 are unpatentable in
    view of the asserted prior art. We vacate the Board’s
    denial of Bosch’s contingent motion as to proposed substi-
    tute claims 23–38 and remand for further proceedings
    consistent with this opinion.
    AFFIRMED-IN-PART, VACATED-IN-PART, AND
    REMANDED
    COSTS
    No costs.