Sipco, LLC v. Emerson Electric Co. ( 2019 )


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  •   United States Court of Appeals
    for the Federal Circuit
    ______________________
    SIPCO, LLC,
    Appellant
    v.
    EMERSON ELECTRIC CO.,
    Appellee
    ______________________
    2018-1635
    ______________________
    Appeal from the United States Patent and Trademark
    Office, Patent Trial and Appeal Board in No. CBM2016-
    00095.
    ______________________
    Decided: September 25, 2019
    ______________________
    JAMES R. BARNEY, Finnegan, Henderson, Farabow,
    Garrett & Dunner, LLP, Washington, DC, argued for ap-
    pellant. Also represented by KELLY LU; GREGORY J.
    GONSALVES, Gonsalves Law Firm, Falls Church, VA.
    DOUGLAS HALLWARD-DRIEMEIER, Ropes & Gray LLP,
    Washington, DC, argued for appellee. Also represented by
    JAMES RICHARD BATCHELDER, JAMES LAWRENCE DAVIS, JR.,
    East Palo Alto, CA.
    ______________________
    Before O’MALLEY, REYNA, and CHEN, Circuit Judges.
    2                         SIPCO, LLC v. EMERSON ELECTRIC CO.
    Opinion for the court filed by Circuit Judge CHEN.
    Opinion concurring-in-part and dissenting-in-part filed by
    Circuit Judge REYNA.
    CHEN, Circuit Judge.
    SIPCO, LLC (SIPCO) appeals a final written decision
    of the Patent Trial and Appeal Board (Board) in a covered
    business method (CBM) review of its 
    U.S. Patent No. 8,908,842
     (’842 patent). After instituting CBM review, the
    Board found claims 1, 7, 9, 16, and 17 of the ’842 patent
    ineligible for patent protection under 
    35 U.S.C. § 101
     and
    unpatentable for obviousness under 
    35 U.S.C. § 103
    .
    SIPCO appeals these findings, as well as the Board’s deter-
    mination that the ’842 patent was subject to CBM review.
    In determining that the ’842 patent qualifies for CBM
    review, the Board found that the patent is not excluded
    from review under the statutory “technological invention”
    exception. See America Invents Act (AIA) § 18(d). Under
    
    37 C.F.R. § 42.301
    (b), the Board must consider “whether
    the claimed subject matter as a whole recites a technologi-
    cal feature that is novel and unobvious over the prior art;
    and solves a technical problem using a technical solution.”
    Applying just the second part of this regulatory standard,
    the Board here found that the patent contained no tech-
    nical solution to a technical problem.
    We reverse the Board’s claim construction of “low
    power transceiver” and its finding that the ’842 patent does
    not satisfy the second part of the regulation defining “tech-
    nological invention.” § 42.301(b). Because the Board did
    not address the applicability of § 42.301(b)’s first part, we
    vacate and remand for consideration consistent with this
    opinion.
    SIPCO, LLC v. EMERSON ELECTRIC CO.                           3
    BACKGROUND
    1. The ’842 Patent
    The ’842 patent, based on a provisional application
    filed in 1997, explains that there are a variety of circum-
    stances in which it is desirable to communicate information
    from a previously unconnected, remote device to a central
    location. ’842 patent at col. 1, ll. 43–45. Rather than set
    up a direct communication link from the remote device to
    the central location, however, the invention of the ’842 pa-
    tent sets up a two-step communication path through a set
    of intermediate nodes that takes advantage of the nodes’
    already-provided communications link (e.g., a public-
    switched telephone network (PSTN)) to the central loca-
    tion. Id. at claim 1. The claimed invention completes the
    communication path by having the remote device com-
    municate wirelessly to an intermediate node. For example,
    a user may wish to replace the bank and credit cards he or
    she carries with a remote transmitting unit, similar to an
    automobile remote key, that has one or more buttons each
    associated with a bank or credit card. Id. at col. 5, ll. 9–64.
    When the user depresses the button, the remote transmit-
    ter transmits the user’s banking card account and PIN in-
    formation to, for example, the ATM. Id. at col. 5, ll. 43–61.
    The ATM then transmits the information over, for exam-
    ple, a PSTN to the central location for verification. Id. at
    col. 7, ll. 41–44.
    In implementing this two-step system, the inventors
    recognized problems that arose. Id. at col. 5, l. 67 – col. 6,
    l. 11. For example, contention between two or more remote
    devices communicating at the same time caused more dis-
    tantly located users to circumvent closer users. Id. at col.
    6, ll. 4–7. In addition, an interloper could unlawfully inter-
    cept the electromagnetic signals carrying sensitive data.
    Id. at col. 6, ll. 7–11. To alleviate these problems, the ’842
    patent recites the use of a low-power remote transmitter,
    which the specification explains would require the user to
    4                          SIPCO, LLC v. EMERSON ELECTRIC CO.
    be in “close proximity,” “e.g., several feet,” in order for the
    user to be able to use it. Id. at col. 5, l. 67 – col. 6, l. 11.
    The parties do not dispute the Board’s treatment of
    claim 1 as representative. Claim 1 recites the following:
    1. A device for communicating information, the de-
    vice comprising:
    a low-power transceiver configured to wirelessly
    transmit a signal comprising instruction data for
    delivery to a network of addressable devices;
    an interface circuit for communicating with a cen-
    tral location; and
    a controller coupled to the interface circuit and to
    the low-power transceiver, the controller config-
    ured to establish a communication link between at
    least one device in the network of addressable de-
    vices and the central location using an address in-
    cluded in the signal, the communication link
    comprising one or more devices in the network of
    addressable, the controller further configured to re-
    ceive one or more signals via the low-power trans-
    ceiver and communicate information contained
    within the signals to the central location.
    Id. at claim 1. Dependent claims 3 and 4 are particularly
    relevant to this appeal:
    3. The device of claim 2, wherein the remote device
    is a [sic] associated with a vending machine.
    4. The device of claim 2, wherein the remote device
    is associated with an Automated Teller Machine
    (ATM).
    Id. at claims 3, 4.
    SIPCO, LLC v. EMERSON ELECTRIC CO.                         5
    2. Board’s Institution Decision
    In July 2016, Emerson Electric Co. (Emerson) filed a
    petition requesting CBM review of the ’842 patent on, inter
    alia, §§ 101 and 103 grounds. Emerson argued that the
    challenged claims were directed to the patent-ineligible ab-
    stract idea of “establishing a communication route between
    two points to relay information.” J.A. 215. According to
    Emerson, “[t]his concept has been practiced for centuries
    in applications such as the Postal Service, Pony Express,
    and telegraph, where a route is established to relay mail or
    other communications from one point to another.” Id. Em-
    erson also argued that the ’842 patent was unpatentable
    for obviousness over 
    U.S. Patent No. 5,157,687
     (Tymes).
    J.A. 261.
    The Board instituted on both grounds. J.A. 432. In its
    institution decision, the Board analyzed whether the ’842
    patent qualified as a “covered business method patent” un-
    der AIA § 18(d)(1), which defines the term as “a patent that
    claims a method or corresponding apparatus for perform-
    ing data processing or other operations used in the prac-
    tice, administration, or management of a financial product
    or service, except that the term does not include patents for
    technological inventions.” The Board determined that
    claim 3—associating the device with a vending machine—
    and claim 4—associating the device with an ATM—recited
    apparatuses “used in the practice, administration, or man-
    agement of a financial product or service” under § 18(d)(1).
    J.A. 387–89.
    The Board then determined that the patent was not
    drawn to a “technological invention.” The Board applied
    its regulation 
    37 C.F.R. § 42.301
    (b), which provides a two-
    part test for determining whether a patent is for a “techno-
    logical invention”: “whether the claimed subject matter as
    a whole recites a technological feature that is novel and un-
    obvious over the prior art; and solves a technical problem
    using a technical solution.” The Board explained that both
    6                        SIPCO, LLC v. EMERSON ELECTRIC CO.
    parts of the regulation must be satisfied in order to exempt
    the patent from CBM review. J.A. 390. Because the Board
    concluded that the patent did not provide a technical solu-
    tion to a technical problem and therefore did not meet part
    two, the Board did not analyze part one. J.A. 390–92.
    Citing the Patent Office’s 2012 Office Patent Trial
    Practice Guide, the Board focused on the features of claim
    1, as incorporated in dependent claims 3 and 4, and deter-
    mined that they are no more than generic and known hard-
    ware elements and routine computer functions. J.A. 390–
    91. The Board found that “[t]he only wireless transmission
    required by claims 3 and 4 is a signal from a low-power
    transceiver,” which the Board noted was well-known in the
    art at the time of the invention. J.A. 391. The Board stated
    that the problem being solved by the ’842 patent was the
    financial problem of reducing the cost of having to dispatch
    service personnel to fix these machines frequently, rather
    than a technical problem. J.A. 392. Ultimately finding
    that the features from claim 1 were not drawn to a tech-
    nical solution to a technical problem and, therefore, not
    drawn to a “technological invention,” the Board determined
    that the ’842 patent was subject to CBM review. J.A. 392–
    93.
    The Board construed, among other terms, “low-power
    transceiver.” J.A. 396–99. Emerson did not provide a con-
    struction in its petition; SIPCO proposed a construction
    that specified that the transceiver “transmits and receives
    signals having a limited transmission range.” J.A. 397.
    SIPCO supported its proposed construction with citations
    to the patent and an exhibit showing that the FCC dis-
    cusses “low-power” transceivers in a manner that limits
    their range to “a few meters.” J.A. 397–98. The Board dis-
    agreed with SIPCO’s proposed construction, finding that
    the term “low-power” as used in claim 1 did not necessarily
    require that the device transmit and receive signals only
    within a “limited transmission range.” J.A. 398.
    SIPCO, LLC v. EMERSON ELECTRIC CO.                         7
    The Board also declined to limit the term based on the
    discussion of low-power transmitters found in columns five
    and six of the specification, because that discussion related
    to “extremely low-power transmitters” rather than “low-
    power transceiver[s].” J.A. 398–99. The Board dismissed
    the FCC document cited by SIPCO because the sentence
    discussing low-power transmitters described the distance
    between people and consumer products, not the low-power
    transmitters’ transmission range. J.A. 399 (quoting J.A.
    2791 (“At any time of day, most people are within a few
    meters of consumer products that use low-power, non-li-
    censed transmitters.”)). The Board ultimately agreed that
    the construction should “encompass” a device that “trans-
    mits and receives signals having a limited transmission
    range” but declined to limit its construction to that phrase.
    
    Id. 3
    . Board’s Final Written Decision
    The Board’s final written decision reiterated its analy-
    sis with respect to whether the ’842 patent was subject to
    CBM review. J.A. 6–20. The Board also explained that
    after institution, SIPCO filed a statutory disclaimer of
    claims 3 and 4 under 
    35 U.S.C. § 253
     and argued that the
    disclaimed claims “cannot form the basis for a ruling that
    the ’842 patent is a [CBM] patent,” as the ’842 patent
    should be “treated as though the disclaimed claims never
    existed,” citing language found in Guinn v. Kopf, 
    96 F.3d 1419
    , 1422 (Fed. Cir. 1996) (“A statutory disclaimer under
    
    35 U.S.C. § 253
     has the effect of canceling the claims from
    the patent and the patent is viewed as though the dis-
    claimed claims had never existed in the patent.”). The
    Board disagreed with SIPCO, finding that the “belated
    post-institution disclaimer of claims 3 and 4” did not affect
    its conclusion that the ’842 patent is subject to CBM re-
    view. J.A. 8. The Board cited a precedential Board CBM
    decision in which it had previously explained that “CBM
    patent review eligibility is determined based on the claims
    of the challenged patent as they exist at the time of the
    8                         SIPCO, LLC v. EMERSON ELECTRIC CO.
    decision whether to institute.” 
    Id.
     (citing Facebook, Inc. v.
    Skky, LLC, Case CBM2016-00091, slip op. 11 (P.T.A.B.
    Sept. 28, 2017) (Paper 2) (precedential)) (emphasis added
    by the Board). The Board also pointed out that AIA
    §§ 18(a)(1)(E) and 18(d)(1) use the present tenses of words
    “institute” and “claims,” implying that a patent is subject
    to CBM review based on what the patent claims at the time
    of the institution decision, not some later time after insti-
    tution. J.A. 8–9. The Board noted that it would not have
    considered claims 3 and 4 if SIPCO had timely filed a dis-
    claimer before institution and observed that Emerson
    would still have had the ability to file for inter partes re-
    view of the ’842 patent before the one-year statutory bar of
    
    35 U.S.C. § 315
    (b) had SIPCO done so. J.A. 10.
    With respect to the technological invention exception,
    the Board cited the statement in Versata Development
    Group, Inc. v. SAP America, Inc., 
    793 F.3d 1306
    , 1327 (Fed.
    Cir. 2015) that “the presence of a general purpose computer
    to facilitate operations through uninventive steps does not
    change the fundamental character of an invention” to sup-
    port its conclusion that “[a] claim does not include a tech-
    nological feature if its elements are nothing more than
    general computer system components used to carry out the
    claimed process.” J.A. 17 (internal quotation marks omit-
    ted). The Board then reiterated its determination that the
    features of claim 1 as incorporated in dependent claims 3
    and 4 “recite no more than generic and known hardware
    elements and routine computer functions,” and that the
    problem being solved, which the Board characterized as
    “[a]utomating service requests of vending machines and
    ATMs,” was a financial, not technological, problem. J.A.
    18–19.
    The Board maintained its “low-power transceiver” con-
    struction, concluding that SIPCO was conflating “power”
    with “transmission range.” J.A. 23. The Board also cred-
    ited Emerson’s expert’s testimony that a change in power
    does not necessarily result in a change in transmission
    SIPCO, LLC v. EMERSON ELECTRIC CO.                           9
    range, because the range depends on numerous factors in-
    cluding the signal frequency and environment. J.A. 24–25.
    The Board concluded that the challenged claims were
    patent-ineligible under § 101 because they were directed to
    the abstract concept of “establishing a communication
    route between two points to relay information” and did not
    contain any additional inventive concept. J.A. 30–45. The
    Board emphasized its view that the ’842 patent merely au-
    tomated service requests using general purpose devices
    such as low-power transceivers. J.A. 32. The Board noted
    that, “[s]ignificantly, the claims are not directed to a new
    type of transceiver, interface circuit, or controller to estab-
    lish a communication link between a remote device and the
    central location,”; “[i]nstead, the claims are directed to
    transmitting data between locations using conventional or
    generic computer components.” J.A. 33.
    The Board also found, inter alia, the ’842 patent obvi-
    ous over Tymes. SIPCO appeals the Board’s determination
    that the ’842 patent is subject to CBM review, as well as
    the Board determinations as to §§ 101 and 103. We have
    jurisdiction pursuant to 
    28 U.S.C. § 1295
    (a)(4)(A).
    DISCUSSION
    1. “Low-Power Transceiver” Construction
    We review factual determinations concerning extrinsic
    evidence underlying the Board’s claim construction for sub-
    stantial evidence and the ultimate construction de novo. In
    re Cuozzo Speed Techs., LLC, 
    793 F.3d 1268
    , 1280 (Fed.
    Cir. 2015). To the extent the Board considered extrinsic
    evidence when construing the claims, we need not consider
    the Board’s findings on that evidence because the intrinsic
    record is clear. See Eidos Display, LLC v. AU Optronics
    Corp., 
    779 F.3d 1360
    , 1365 (Fed. Cir. 2015).
    The Board correctly applied Phillips v. AWH Corp., 
    415 F.3d 1303
    , 1312 (Fed. Cir. 2005) (en banc), rather than the
    broadest reasonable interpretation standard, when
    10                         SIPCO, LLC v. EMERSON ELECTRIC CO.
    construing terms of this expired patent. J.A. 21; see also In
    re Rambus Inc., 
    694 F.3d 42
    , 46 (Fed. Cir. 2012). Phillips
    explains that “[i]t is a bedrock principle of patent law that
    the claims of a patent define the invention to which the pa-
    tentee is entitled the right to exclude.” 415 F.3d at 1312
    (internal quotation marks omitted). “While not an absolute
    rule, all claim terms are presumed to have meaning in a
    claim.” Innova/Pure Water, Inc. v. Safari Water Filtration
    Sys., Inc., 
    381 F.3d 1111
    , 1119 (Fed. Cir. 2004). In Innova,
    we rejected a construction that read the term “operatively”
    out of the phrase “operatively connected,” explaining that
    the construction was not correct because “the term ‘opera-
    tively’ [would be] unnecessary and superfluous as the pa-
    tentee could have as easily used the term ‘connected’
    alone.” 
    Id.
    The dispute between the parties is whether “low-
    power” is properly read, in light of the specification, to cor-
    relate with limited transmission range. We conclude that
    the Board’s construction in this case fails to give appropri-
    ate meaning to the term “low-power” in “low-power trans-
    ceiver.” “Importantly, the person of ordinary skill in the
    art is deemed to read the claim term not only in the context
    of the particular claim in which the disputed term appears,
    but in the context of the entire patent, including the speci-
    fication.” Phillips, 415 F.3d at 1313. The specification ex-
    plains that the reason that the ’842 patent contemplates a
    transmitter 1 having low power is “so that a user will have
    1   The specification explains that a transceiver con-
    tains both a transmitter and receiving circuitry, and the
    parties do not dispute that only the transmitter portion of
    the “low-power transceiver” is used in claim 1. See ’842 pa-
    tent at col. 8, ll. 7–9, claim 1. Accordingly, we find that the
    specification’s disclosure of a “low-power transmitter” is co-
    extensive with claim 1’s recitation of “low-power trans-
    ceiver.”
    SIPCO, LLC v. EMERSON ELECTRIC CO.                           11
    to be in close proximity, (e.g., several feet) to the receiver
    18 of an AFTM 10 in order to use the transmitter.” ’842
    patent at col. 5, l. 67 – col. 6, l. 3. It is only if the signal
    transmission is limited in range that the problems of un-
    wanted circumvention, contention, and unlawful intercep-
    tion of the electromagnetic signals described in column six
    are alleviated. See id. at col. 6, ll. 4–9.
    We recognize here, as we did in Phillips, “that the dis-
    tinction between using the specification to interpret the
    meaning of a claim and importing limitations from the
    specification into the claim can be a difficult one to apply
    in practice.” Phillips, 415 F.3d at 1323. However, “the line
    between construing terms and importing limitations can be
    discerned with reasonable certainty and predictability if
    the court’s focus remains on understanding how a person
    of ordinary skill in the art would understand the claim
    terms.” Id. SIPCO’s specification explicitly ties the low-
    power transceiver to a limited transmission distance; ac-
    cordingly, a skilled artisan would understand “low-power”
    to mean that the transceiver operates at a power level cor-
    responding to “limited transmission range 2.”
    Emerson contends that the specification’s discussion of
    a limited transmission range for its transmitter does not
    apply to the claimed “low-power transceiver” because that
    discussion uses the word “extremely” before low-power.
    But the specification is consistent with our construction,
    because it repeatedly ties the low-power transmitter to
    having a limited transmission range. See, e.g., ’842 patent
    at col. 5, l. 67 – col. 6, l. 3 (“Preferably, the transmitter 20
    2   The dissent states that this construction introduces
    ambiguities as to how much distance and how much power
    correspond to “limited transmission range.” Dissent at 7.
    But the parties did not allege, and the Board did not find
    that the meaning of “limited transmission range,” or even
    “low-power,” was uncertain.
    12                         SIPCO, LLC v. EMERSON ELECTRIC CO.
    is an extremely low power transmitter, so that a user will
    have to be in close proximity, (e.g., several feet) to the re-
    ceiver . . . .”); id. at col. 6, ll. 4–11 (“This extremely low-
    power operation also helps to prevent the unlawful inter-
    ception of the electromagnetic signals.”); id. at col. 14, ll.
    15–21 (“. . . it may be desirable to use a cellular transmit-
    ter, instead of a low-power RF transmitter . . . because the
    automobile may break down a relatively significant dis-
    tance from the nearest pay-type telephone (e.g., location of
    the nearest transceiver).”). The word “extremely” specifies
    the amount of distance by which the transmission is lim-
    ited—e.g., “several feet.” The specification’s description of
    a cellular transmitter being capable of transmitting a fur-
    ther distance than a low-power transmitter reinforces this
    conclusion. See id. at col. 14, ll. 15–21.
    The Board placed considerable emphasis on Dr. Geier’s
    expert testimony that “low-power” is not necessarily coex-
    tensive with a limited transmission range. See J.A. 23–25.
    But in this case, the intrinsic evidence is sufficiently clear
    as to the meaning of “low-power” such that consulting ex-
    trinsic evidence is unnecessary. See Phillips, 415 F.3d at
    1317. In any event, Dr. Geier’s testimony was less than
    conclusive, and both he and Emerson’s other expert, Dr.
    Heppe, testified that one (according to Dr. Heppe, “typical”)
    characteristic of a low-power transmitter is a limited trans-
    mission range, and that characteristic is consistent with
    the only described use in the specification. See J.A. 2937–
    38 (Dr. Geier); J.A. 3152–53 (Dr. Heppe). Moreover, the
    record also contains evidence that supports a relationship
    between limited transmission range and low transmit
    power. See J.A. 3046 (disclosing the Friis equation, which
    defines transmission distance as a function of the square
    root of transmitted power); J.A. 3149-50 (Dr. Heppe testi-
    fying that “signal level, generally speaking, decays as one
    over the square distance”).
    Accordingly, we reverse the Board’s construction of
    “low-power transceiver” and construe it to mean “a device
    SIPCO, LLC v. EMERSON ELECTRIC CO.                       13
    that transmits and receives signals at a power level corre-
    sponding to limited transmission range.”
    2. Financial Product or Service
    “[W]e review the Board’s reasoning [as to whether the
    particular patents at issue are CBM patents] under the ar-
    bitrary and capricious standard and its factual determina-
    tions under the substantial evidence standard.”
    SightSound Techs., LLC v. Apple Inc., 
    809 F.3d 1307
    , 1315
    (Fed. Cir. 2015). The parties do not dispute that only one
    claim must meet the requirements of § 18(d)(1) in order for
    the patent to be considered a CBM patent. See Apple, Inc.
    v. Ameranth, Inc., 
    842 F.3d 1229
    , 1239 n.6 (Fed. Cir. 2016).
    We find that the Board’s conclusion that claims 3 and
    4 recite an apparatus “for performing data processing or
    other operations used in the practice, administration, or
    management of a financial product or service” under AIA
    § 18(d)(1) was not arbitrary and capricious. We have pre-
    viously interpreted “the definition of ‘covered business
    method patent’ [not to be] limited to products and services
    of only the financial industry, or to patents owned by or
    directly affecting the activities of financial institutions
    such as banks and brokerage houses.” Versata, 793 F.3d at
    1325. Rather, we have found that § 18(d)(1) “on its face
    covers a wide range of finance-related activities.” Id. In
    Versata, we found the “method and apparatus for pricing
    products in multi-level product and organizational groups”
    to be sufficiently “used in the practice, administration, or
    management of a financial product or service” to subject
    the patent to CBM review. Id. at 1311, 1325–26.
    We placed some limitation on the scope of CBM review
    in Unwired Planet, LLC v. Google Inc., 
    841 F.3d 1376
     (Fed.
    Cir. 2016), where the Board had found a patent relating to
    a “method and system for managing location information
    for wireless communications devices” to be subject to CBM
    review because, in the Board’s view, “the [recited] ‘client
    application’ may be associated with a service provider or a
    14                         SIPCO, LLC v. EMERSON ELECTRIC CO.
    goods provider, such as a hotel, restaurant, or store” and
    therefore the patent was “incidental to” or “complementary
    to” the financial activity of service or product sales. 
    Id.
     at
    1378–79. We held that the Board’s reliance on activities
    merely “incidental to” or “complementary to” a financial ac-
    tivity rendered meaningless the limits placed by Congress
    on CBM review. 
    Id. at 1382
    . For example, “[t]he patent for
    a novel lightbulb that is found to work particularly well in
    bank vaults does not become a CBM patent because of its
    incidental or complementary use in banks.” 
    Id.
     “Likewise,
    it cannot be the case that a patent covering a method and
    corresponding apparatuses becomes a CBM patent because
    its practice could involve a potential sale of a good or ser-
    vice[, because] [a]ll patents, at some level, relate to poten-
    tial sale of a good or service.” 
    Id.
     Nor is a patent for
    “digging ditches” subject to CBM review simply because
    the dirt can subsequently be sold. 
    Id.
    SIPCO likens its ’842 patent to the examples provided
    in Unwired Planet, arguing that the claimed device is only
    “associated with” an ATM or vending machine and the
    “mere possibility that certain remote devices of the ‘842 pa-
    tent could communicate financial data is not nearly suffi-
    cient to demonstrate that it is directed to financial products
    or services.” SIPCO’s Op. Br. 59. But the claimed appa-
    ratus need only be “used in” the practice, administration,
    or management of a financial product or service. See AIA
    § 18(d). As the Board explained, claims 3 and 4 recite the
    remote device being associated with an ATM or vending
    machine. ’842 patent at claims 3, 4. The patent expressly
    contemplates that the information communicated through
    the claimed system is financial information that identifies
    the user’s bank account and the user’s identity. See, e.g.,
    id. at col. 5, ll. 40–64, col. 6, ll. 13–16. The Board is correct
    in its assessment that the concept of communicating finan-
    cial information from a device associated with an ATM to a
    central location is “central to the operation of the claimed
    device” in claim 3. See J.A. 14–15 (citing ’842 patent at col.
    SIPCO, LLC v. EMERSON ELECTRIC CO.                              15
    1, ll. 43–65, col. 2, ll. 23–25, col. 3, ll. 12–14, col. 3, ll. 22–
    23, col. 4, ll. 32–37, col. 6, ll. 19–28, FIGs. 1A, 5). We there-
    fore do not find that the Board abused its discretion when
    it determined that the claimed apparatus was “used in” the
    practice, administration, or management of a financial
    product or service.
    SIPCO also argued before the Board and on appeal that
    because it disclaimed claims 3 and 4 the Board should not
    have relied on them in analyzing whether the ’842 patent
    is CBM eligible. SIPCO’s Op. Br. at 62. But SIPCO ulti-
    mately conceded at oral argument that a patent may be
    CBM eligible based on a single claim and that the Board
    could have properly relied on claims 3 or 4. Oral Arg. at
    2:02–09, 5:24–51, http://oralarguments.cafc.uscourts.gov/
    default.aspx?fl=2018-1635.mp3.
    Accordingly, the Board’s conclusion that the ’842 pa-
    tent could be CBM eligible because claims 3 and 4 recite an
    apparatus “for performing data processing or other opera-
    tions used in the practice, administration, or management
    of a financial product or service” under § 18(d)(1) is not ar-
    bitrary and capricious.
    3. Technological Invention Exception
    We review the Board’s reasoning as to whether the ’842
    patent qualifies as a “technological invention” under
    § 18(d)(1) under the arbitrary and capricious standard and
    its factual determinations for substantial evidence.
    SightSound, 809 F.3d at 1315. Section 18(d)(1) excludes
    “patents for technological inventions” from CBM review.
    We previously explained in Versata that, “[u]nhelpfully,
    Congress did not . . . define a ‘technological invention,’ but
    instead instructed the USPTO to ‘issue regulations for de-
    termining whether a patent is for a technological inven-
    tion,’” in order to assist in implementing CBM review.
    Versata, 793 F.3d at 1323 (quoting § 18(d)(2)); see id. The
    Patent Office, in turn, issued 
    37 C.F.R. § 42.301
    , which de-
    fines “technological invention” in the following way:
    16                         SIPCO, LLC v. EMERSON ELECTRIC CO.
    In determining whether a patent is for a technolog-
    ical invention solely for purposes of the Transi-
    tional Program for Covered Business Methods
    (section 42.301(a)), the following will be considered
    on a case-by-case basis: [1] whether the claimed
    subject matter as a whole recites a technological
    feature that is novel and unobvious over the prior
    art; and [2] solves a technical problem using a tech-
    nical solution.
    § 42.301(b).
    If each part of this definition is satisfied, then the pa-
    tent is not eligible for CBM review. We discuss each part
    with respect to the ’842 patent below.
    a. Part Two
    Because the Board misread and mischaracterized the
    features of claim 1 in its analysis of dependent claims 3 and
    4, it did not appreciate that the claims provide a technical
    solution to a technical problem. Its ruling on this issue was
    thus arbitrary and capricious.
    We explained in Versata that § 42.301’s “[d]efini[tion
    of] a term in terms of itself does not seem to offer much
    help.” 793 F.3d at 1326. In fact, “neither the statute’s punt
    to the USPTO nor the agency’s lateral of the ball offer an-
    ything very useful in understanding the meaning of the
    term ‘technological invention.’” Id. In Versata, we deter-
    mined that a method of determining a price that could be
    achieved “in any type of computer system or programming
    or processing environment,” and using “no specific, uncon-
    ventional software, computer equipment, tools or pro-
    cessing capabilities” did not recite a technical solution to a
    technical problem. Id. at 1327. Citing Alice Corp. Pty. Ltd.
    v. CLS Bank International, 
    573 U.S. 208
     (2014), we stated
    that “the presence of a general purpose computer to facili-
    tate operations through uninventive steps does not change
    SIPCO, LLC v. EMERSON ELECTRIC CO.                        17
    the fundamental character of [the] invention.” Versata,
    793 F.3d at 1327.
    In Apple, we found a Board decision not to be arbitrary
    and capricious where it determined that a method of gen-
    erating a second menu from categories and items selected
    from a first menu did not provide a technical solution to a
    technical problem. 842 F.3d at 1234, 1239–40. The patent
    owner had argued that the patent was intended to solve “a
    problem in restaurant ordering when customers wanted
    something unusual and unanticipated.” Id. at 1239. The
    Board found this to be more of a business problem than a
    technical problem. Id.
    In Trading Technologies, we found a Board decision not
    to be arbitrary and capricious where it determined that a
    software method for financial trading, including receiving
    bid and offer information and displaying the information to
    the user, did not provide a technical solution to a technical
    problem. Trading Techs. Int’l, Inc. v. IBG LLC, 
    921 F.3d 1084
    , 1091 (Fed. Cir. 2019) (Trading Techs. I); Trading
    Techs. Int’l, Inc. v. IBG LLC, 
    921 F.3d 1378
    , 1383 (Fed. Cir.
    2019) (Trading Techs. II). The patent owner argued that
    the patent addressed technical problems relating to effi-
    ciency, speed, usability, intuitiveness, and visualization of
    prior art graphical user interface tools. Trading Techs. I at
    1089; see also Trading Techs. II at 1383. We agreed that
    the claims related to the practice of a financial product—
    helping a trader gain a market advantage—rather than a
    technological invention. Trading Techs. I at 1089–90;
    Trading Techs. II at 1383. Because the “invention ma[de]
    the trader faster and more efficient, not the computer,” it
    was not a technical solution to a technical problem. Trad-
    ing Techs. I at 1090 (emphasis in original); see also Trading
    Techs. II at 1383.
    The question of whether a patent is for a “technological
    invention” is fact-specific and must be considered on a case-
    by-case basis. See § 42.301(b). This case differs from those
    18                        SIPCO, LLC v. EMERSON ELECTRIC CO.
    we have previously analyzed because the problem solved
    by the claims is technical in nature. The Board limited its
    characterization of the “problem” being solved to an exam-
    ple problem provided in the background that is resolved by
    the claims—automating machine service requests. See
    J.A. 19. But it is clear from both the claims and the speci-
    fication that the claimed invention implements a commu-
    nication system that connects an unconnected, remote
    device with a central station. See SIPCO’s Reply Br. at 22.
    The claims do so by taking advantage of a set of intermedi-
    ate nodes (“a network of addressable devices”) that are al-
    ready connected to the central station over an existing
    communication network, for example PSTN. ’842 patent at
    claim 1. The first step of the communication path from the
    user and remote device to the intermediate node is made
    over a wireless connection, and the second step is from the
    intermediate node to the central station over the existing
    communication network. Id.
    In the context of leveraging an existing communica-
    tions network to serve as an intermediary for communica-
    tion between a remote device and a central location,
    however, the ’842 patent explains that certain problems
    arise in communicating information at this first step, e.g.,
    unlawful interference, contention, and unwanted circum-
    vention of the electromagnetic signals. Id. at col. 5, l. 65 –
    col. 6, l. 11. Accordingly, the technical problem resolved by
    the claims was how to extend the reach of an existing com-
    munication system from a central location to a remote, un-
    connected device while protecting against unwanted
    interference with the transmitted signals. The claims solve
    this problem with a technical solution: the creation of a
    two-step communication system that communicates infor-
    mation through a low-power, i.e., limited transmission
    range, transceiver over a first, wireless step, that taps into
    SIPCO, LLC v. EMERSON ELECTRIC CO.                        19
    the intermediate node’s existing network connection to
    transport information to the central location. 3
    Emerson maintains that even if the ’842 patent solves
    this technical problem, it does so with conventional compo-
    nents. But in that sense, this case is similar to Bascom
    Global Internet Services, Inc. v. AT&T Mobility LLC, 
    827 F.3d 1341
     (Fed. Cir. 2016), which arose in a different con-
    text and answered a different legal question but remains
    instructive here. In Bascom, prior art systems either lo-
    cated the Internet content filter at the user’s computer and
    were customizable to the user but easily thwarted by com-
    puter-savvy teenagers or employees, or located the filter at
    3    Our decision in Chamberlain Group, Inc. v.
    Techtronic Industries Co., Nos. 18-2103, 18-2228, 
    2019 WL 3938278
    , --- F.3d --- (Fed. Cir. Aug. 21, 2019) is not to the
    contrary. In Chamberlain, we determined that claims re-
    citing wireless communication of status information about
    a movable barrier operator (e.g., garage door opener) were
    directed to an abstract idea of communicating information
    wirelessly, and that the mere limitation of that abstract
    idea to the field of movable barrier operators did not con-
    stitute an inventive concept sufficient to transform the ab-
    stract idea into a practical application of the idea under
    Alice. 
    Id.
     at *2–5. Unlike in Chamberlain, SIPCO’s
    claimed invention does not simply use “well understood,”
    off-the-shelf wireless technology for its intended purpose of
    communicating information. See 
    id.,
     at *4–5. Instead,
    SIPCO’s claim 1 provides a more specific implementation
    of a communication scheme through its two-step communi-
    cation path that combines an established communications
    network with a short-range wireless connection between a
    low-power transceiver and an intermediate node on the es-
    tablished network. SIPCO’s two-step solution extends the
    reach of the existing network while overcoming problems
    of interference, contention, and interception.
    20                        SIPCO, LLC v. EMERSON ELECTRIC CO.
    a remote server that could not be customizable to the user.
    
    Id.
     at 1343–45. The claimed invention took advantage of
    the technical capability of the TCP/IP communication net-
    work and moved the filter to a server operated by the In-
    ternet Service Provider (ISP). 
    Id. at 1344
    . Because the ISP
    could associate an individual user with a specific request
    to access a website, the claimed invention was able to pro-
    vide individual-customizable Internet content filtering re-
    motely, preventing it from being easily circumvented by its
    users. 
    Id.
     at 1344–45. We determined that the claims were
    drawn to the abstract idea of Internet content filtering un-
    der step one of Alice’s § 101 analysis, but determined that
    nothing in the record refuted Bascom’s argument that the
    claims were drawn to an inventive concept because they
    recited a “technology-based solution (not an abstract-idea-
    based solution implemented with generic technical compo-
    nents in a conventional way) to filter content on the Inter-
    net that overcomes existing problems with other Internet
    filtering systems.” Id. at 1351. “By taking a prior art filter
    solution (one-size-fits-all filter at the ISP server) and mak-
    ing it more dynamic and efficient (providing individualized
    filtering at the ISP server), the claimed invention repre-
    sents a ‘software-based invention[ ] that improve[s] the
    performance of the computer system itself.’” Id. “The
    claims [thus] carve out a specific location for the filtering
    system (a remote ISP server) and require the filtering sys-
    tem to give users the ability to customize filtering for their
    individual network accounts.” Id. at 1352. We determined
    this to be the case despite the fact that each piece of tech-
    nology Bascom employed in its invention, e.g., a computer,
    a server, was conventional in nature. Id.
    By implementing a two-step communication path that
    takes advantage of both a wireless step from a remote de-
    vice to a set of intermediate nodes and another step that
    may be, for example, over PSTN from the intermediate
    nodes to the central location, and also incorporating the use
    of a low-power transceiver to overcome the technical
    SIPCO, LLC v. EMERSON ELECTRIC CO.                         21
    problems of interference, interception, and contention of
    electromagnetic signals sent over the first, wireless step,
    SIPCO’s invention is drawn to a technology-based solution,
    just as Bascom’s was. Because SIPCO’s claims combine
    certain communication elements in a particular way to ad-
    dress a specific technical problem with a specific technical
    solution, we reverse the Board’s finding that the patent
    does not satisfy the second part of its “technological inven-
    tion” regulation.
    b. Part One
    The Board did not analyze whether the ’842 patent sat-
    isfies the first part of § 42.301(b) because it found that the
    patent did not satisfy the second part. Emerson concedes
    as much. Oral Arg. at 31:14–20. Rather than address this
    issue in the first instance on appeal, the Board should ad-
    dress the first part of § 42.301(b) under the proper con-
    struction. Robertson v. Timmermans, 
    603 F.3d 1309
    , 1313
    (Fed. Cir. 2010) (“[W]e think the better course is to give the
    Board the opportunity to apply the correct law rather than
    decide these issues ourselves in the first instance.”).
    Emerson argues that remand is unnecessary because
    the Board already analyzed whether the ’842 patent was
    obvious under § 103. But we have previously questioned
    whether it makes sense to interpret the first part of
    § 42.301(b)—which references the word obvious—as coex-
    tensive with § 103. Most notably, in Versata, we observed
    that “[a]t this early stage of the process, when the USPTO
    is first determining whether the patent at issue is even a
    CBM, there would seem to be little cause to determine
    what will be one of the ultimate questions if review is
    granted—did the USPTO err in the first instance when it
    originally determined that the invention was novel and
    nonobvious?” 793 F.3d at 1326. We therefore decline to
    assume that this is how the Board would apply § 42.301(b)
    in this case. Instead, on remand the Board should explain
    22                         SIPCO, LLC v. EMERSON ELECTRIC CO.
    what part one of the regulation means and then apply it as
    so explicated. 4
    CONCLUSION
    For the reasons stated above, we reverse the Board’s
    construction of “low-power transceiver,” affirm the Board’s
    finding that claims of the patent are “used in . . . a financial
    product or service” under AIA § 18(d)(1), and reverse the
    Board’s finding that the patent does not “solve[] a technical
    problem using a technical solution” under its regulation
    § 42.301(b). Because part two of § 42.301(b) is satisfied, we
    remand to the Board for consideration of part one con-
    sistent with this opinion. Because the Board on remand
    must revisit its decision as to whether the ’842 patent qual-
    ifies for the CBM review, we vacate all of the Board’s un-
    patentability determinations. We have considered the
    parties’ remaining arguments and find them unpersuasive.
    REVERSED-IN-PART, AFFIRMED-IN-PART, AND
    VACATED-AND-REMANDED-IN-PART
    No costs.
    4   The parties agree that the AIA does not define
    what is or is not a technological invention.
    See, e.g., Oral Arg. at 9:10-9:39, 16:45–52 (“Q: Does the
    statute provide any guidance as to what a technological in-
    vention is? A: Well, no your Honor.”); see also AIA § 18(d).
    The omission of any definition for the phrase “technological
    invention” underscores the importance of meaningful guid-
    ance from the Patent Office on § 42.301(b). See Kisor v.
    Wilkie, 
    139 S. Ct. 2400
    , 2417 n.5 (2019) (emphasizing that
    regulations which “parrot[] the statutory text” rather than
    putting the public on notice of an agency’s interpretation in
    advance are not entitled to deference).
    United States Court of Appeals
    for the Federal Circuit
    ______________________
    SIPCO, LLC,
    Appellant
    v.
    EMERSON ELECTRIC CO.,
    Appellee
    ______________________
    2018-1635
    ______________________
    Appeal from the United States Patent and Trademark
    Office, Patent Trial and Appeal Board in No. CBM2016-
    00095.
    ______________________
    REYNA, Circuit Judge, concurring-in-part and dissenting-
    in-part.
    I respectfully dissent from the majority’s decision that
    rejects the Board’s claim construction in favor of its own
    construction. The record is clear in two respects. First, the
    majority reaches its own construction by improperly read-
    ing a functional limitation into the claim from a preferred
    embodiment. Second, the Board’s construction rests on fac-
    tual findings that are supported by substantial evidence,
    including expert testimony on the meaning of the claim
    term “low-power transceiver” to a person of ordinary skill
    in the art. In the end, the majority does not explain why
    the Board’s construction is so “clearly at odds with the
    claim construction mandated by” the intrinsic record that
    2                        SIPCO, LLC v. EMERSON ELECTRIC CO.
    the extrinsic evidence on which the Board relied can be dis-
    counted entirely. Phillips v. AWH Corp., 
    415 F.3d 1303
    ,
    1318 (Fed. Cir. 2005). The majority explains only that it
    prefers a different construction. Because the majority’s
    opinion is contrary to basic tenants of claim construction
    set forth in Phillips, and the deference owed to underlying
    factual findings under Teva, I respectfully dissent.
    I.
    To be sure, the parties disputed before the Board the
    construction of the term “low-power transceiver.” SIPCO
    argued that “low-power transceiver” should be construed
    as a “transceiver that transmits and receives signals hav-
    ing a limited transmission range.” J.A. 22, 485. Emerson
    argued that the plain and ordinary meaning of “low-power”
    should apply: “a transceiver that consumes less power, e.g.,
    by transmitting and receiving low power signals.” J.A. 23,
    588. Emerson further argued that SIPCO’s construction
    impermissibly imports a “limited transmission range” lim-
    itation into the claims. J.A. 23, 588. Neither party pro-
    posed the construction now adopted by the majority.
    The Board addressed point-by-point the same argu-
    ments that SIPCO advances on appeal. The Board ulti-
    mately rejected SIPCO’s proposed construction, finding
    that SIPCO’s arguments conflated “power” with “transmis-
    sion range.” J.A. 23. For example, the Board considered
    SIPCO’s reliance on a Federal Communications Commis-
    sion bulletin purportedly defining low-power transmitters
    as having a range of only a few meters but found that the
    bulletin did not support SIPCO’s argument after examin-
    ing that evidence. J.A. 26.
    The Board adopted the plain and ordinary meaning of
    “low-power” and construed “low-power transceiver” as re-
    ferring to a transceiver that consumes less power. 
    Id.
     This
    construction, the Board concluded, encompasses a device
    SIPCO, LLC v. EMERSON ELECTRIC CO.                         3
    that transmits and receives signals having a limited trans-
    mission range, but is not limited by that feature. J.A. 26.
    The record evidence supports the Board’s construction.
    Notably, the Board received evidence and weighed the
    testimony and credibility of SIPCO’s and Emerson’s ex-
    perts. The Board credited the testimony of Emerson’s ex-
    pert, James T. Geier, in making its factual finding that a
    person of ordinary skill in the art would have understood
    that changing the transmission power does not necessarily
    change the transmission range. J.A. 23 (citing J.A. 2655–
    58 ¶¶ 34–39 (Geier Rebuttal Decl.)); see also J.A. 25 (ex-
    plaining that Mr. Geier’s cross-examination testimony was
    consistent with his declaration testimony on the fact that
    “changing the ‘power’ does not necessarily change the
    ‘transmission range,’ which depends [sic] numerous fac-
    tors, including the signal frequency and environment”).
    The majority rejects the plain and ordinary meaning of
    “low-power transceiver” and reverses the Board, constru-
    ing the term to mean “a device that transmits and receives
    signals at a power level corresponding to limited transmis-
    sion range.” Maj. Op. 12–13. The majority concludes that
    the meaning of “low-power” is sufficiently clear in the in-
    trinsic record to make evaluation of the extrinsic evidence
    unnecessary. Maj. Op. 12. According to the majority, the
    specification explains that the reason for using low-power
    transmitters is so the user must be in close proximity to the
    receiver to avoid the problems of unwanted circumvention
    and unlawful interception of the signals. Maj. Op. 10–11.
    The majority thus concludes that the “specification explic-
    itly ties the low power transceiver to a limited transmission
    distance,” and that a person of ordinary skill in the art
    would understand “‘low-power’ to mean ‘having a limited
    transmission range.’” Maj. Op. 11. The majority goes on to
    further conclude that the term “extremely” in the phrase
    “extremely low-power” refers to the “amount of distance by
    which the transmission is limited—e.g., ‘several feet.’”
    Maj. Op. 12. (emphases in original). And despite finding
    4                         SIPCO, LLC v. EMERSON ELECTRIC CO.
    that the intrinsic evidence is so clear that it does not need
    to consider the Board’s factual findings, the majority pro-
    ceeds to reweigh the extrinsic evidence and make its own
    factual findings, contrary to the Board’s. Maj. Op. 12. The
    majority’s newly proffered construction is contrary to well-
    established claim construction precedent.
    II.
    The majority errs in two ways: (1) by importing a limi-
    tation—transmission range—into the claims from a pre-
    ferred embodiment; and (2) by disregarding the Board’s
    factual findings without a sufficiently clear intrinsic rec-
    ord.
    First, the majority reaches its own construction of “low-
    power transceiver” by relying on limitations that are not in
    the claims. We have long held that “even though ‘claims
    must be read in light of the specification of which they are
    a part, it is improper to read limitations from the written
    description into a claim.’” Bradium Techs. LLC v. Iancu,
    
    923 F.3d 1032
    , 1049 (Fed. Cir. 2019) (quoting Wenger Mfg.,
    Inc. v. Coating Mach. Sys., Inc., 
    239 F.3d 1225
    , 1237 (Fed.
    Cir. 2001)); see also Silicon Graphics, Inc. v. ATI Techs.,
    Inc., 
    607 F.3d 784
    , 792 (Fed. Cir. 2010) (“A construing
    court’s reliance on the specification must not go so far as to
    import limitations into claims from examples or embodi-
    ments appearing only in a patent’s written description []
    unless the specification makes clear that the patentee in-
    tends for the claims and the embodiments in the specifica-
    tion to be strictly coextensive.” (internal quotations
    omitted)).
    As the majority recognizes, we have noted the difficulty
    in drawing a “fine line between construing the claims in
    light of the specification and improperly importing a limi-
    tation from the specification into the claims.” Cont’l Cir-
    cuits LLC v. Intel Corp., 
    915 F.3d 788
    , 797 (Fed. Cir. 2019)
    (quoting Retractable Techs., Inc. v. Becton, Dickinson &
    Co., 
    653 F.3d 1296
    , 1305 (Fed. Cir. 2011)). Nevertheless,
    SIPCO, LLC v. EMERSON ELECTRIC CO.                             5
    “the line between construing terms and importing limita-
    tions can be discerned with reasonable certainty and pre-
    dictability if the court’s focus remains on understanding
    how a person of ordinary skill in the art would understand
    the claim terms.” Phillips, 415 F.3d at 1323.
    The majority here loses that focus, crosses that line,
    and, commits “one of the cardinal sins of patent law—read-
    ing a limitation from the written description into the
    claims.” Id. at 1320 (quoting SciMed Life Sys., Inc. v. Ad-
    vanced Cardiovascular Sys., Inc., 
    242 F.3d 1337
    , 1340
    (Fed. Cir. 2001)); see also id. at 1321 (“[W]e have expressly
    rejected the contention that if a patent describes only a sin-
    gle embodiment, the claims of the patent must be con-
    strued as being limited to that embodiment.”).
    The majority’s construction (“a device that transmits
    and receives signals at a power level corresponding to lim-
    ited transmission range”) replaces the ordinary meaning of
    the “power” limitation in the claim language and instead
    ascribes a functional limitation to “low-power transceiver”
    in terms of transmission range, such that a low power
    transceiver that transmits more than two feet—for exam-
    ple, two and a half feet—is excluded. See Maj. Op. 10–12.
    To reach this conclusion, the majority relies primarily on a
    single passage in the written description describing a sin-
    gle preferred embodiment depicted in Figure 1. As to this
    embodiment, and in relevant part, the written description
    states:
    In use, a user would simply depress a transmit but-
    ton 22, which would result in the transmitter 20
    transmitting an electromagnetic signal 30 to a re-
    mote AFTM 10[.] Preferably, the transmitter 20 is
    an extremely low power transmitter, so that a user
    will have to be in close proximity, (e.g., several feet)
    to the receiver 18 of an AFTM 10 in order to use the
    transmitter. This would help alleviate problems
    which may otherwise occur if a user approaching
    6                          SIPCO, LLC v. EMERSON ELECTRIC CO.
    an AFTM 10 is circumvented by a second, more dis-
    tantly located user who depresses his transmit but-
    ton. This extremely low-power operation also helps
    to prevent the unlawful interception of the electro-
    magnetic signals[.] In addition, in an alternative
    embodiment, the transmitted signal may be en-
    crypted for further protect [sic] against such unlaw-
    ful interception.
    ’842 patent col. 5 l. 65–col. 6 l. 11 (emphases added).
    This is the critical passage from which the majority
    concludes that the written description links “low-power” to
    having a “limited transmission range” limitation. See Maj.
    Op. 11–12. According to the majority, “[i]t is only if the sig-
    nal transmission is limited in range that the problems of
    unwanted circumvention, contention, and unlawful inter-
    ception of the electromagnetic signals . . . are alleviated.”
    Maj. Op. 11. But this is not correct because the specifica-
    tion recognizes that transmission need not be extremely
    low-power if the transmission signal is encrypted. Thus,
    based on a single “preferred” embodiment, the majority
    limits the entire claim based on transmission range and
    thereby alters the scope of the patent. 1
    The majority’s construction alters the scope by remov-
    ing the “low power” limitation from the claim language and
    1   The majority overlooks other embodiments in the
    specification. Another embodiment is a vending machine
    whereby the machine sends a signal to itself that is then
    relayed to the central location that it, for example, is low
    on or out of potato chips. See ’842 patent col. 7 l. 61–col. 9
    l. 3. The majority fails to explain why, in this embodiment,
    close proximity to the receiver is necessary to avoid un-
    wanted circumvention or unlawful interception of the po-
    tato chip notification.
    SIPCO, LLC v. EMERSON ELECTRIC CO.                             7
    replacing it with a relationship between power and trans-
    mission range extrapolated from a preferred embodiment.
    In doing so, it introduces at least three ambiguities.
    First, the specification does not clearly define a rela-
    tionship between power and transmission range. While the
    specification describes an embodiment that relates “ex-
    tremely low power” to the requirement that a user be in
    close proximity, “e.g., several feet,” of the receiver, the spec-
    ification is silent on how a person of ordinary skill in the
    art would understand “limited transmission range” and
    power level. If, as the majority contends, “extremely” spec-
    ifies the “amount of distance,” it is unclear how to objec-
    tively determine the distance required by “limited
    transmission range” in the majority’s construction where
    “extremely” is absent and “several feet” is the sole example
    given for transmission range. See Interval Licensing LLC
    v. AOL, Inc., 
    766 F.3d 1364
    , 1373 (Fed. Cir. 2014) (declin-
    ing to “cull out a single ‘e.g.’ phrase from a lengthy written
    description to serve as the exclusive definition of a facially
    subjective claim term” and holding that claim term to be
    indefinite). Second, the relationship between power and
    “limited transmission range” introduced by the majority’s
    construction is not defined by the specification and is am-
    biguous because it allows for inverse relationships or a re-
    lationship impacted by other factors—so long as “power”
    and “limited transmission range” correspond in some way.
    In other words, there is nothing to tell a person of ordinary
    skill in the art a numerical value for the transmission
    range that would result from a “corresponding” numerical
    value for power level. Third, the majority’s construction
    does not specify whether the device is limited in the trans-
    mission range of signals it transmits, or whether the device
    also has limits on the transmission range of signals it can
    receive. A construction that introduces such ambiguities
    cannot be correct.
    Here, the patentee chose to define the subject matter
    of his invention in terms of “power,” and our law gives him
    8                         SIPCO, LLC v. EMERSON ELECTRIC CO.
    the freedom to do so. See Thorner v. Sony Computer Entm’t
    Am. LLC, 
    669 F.3d 1362
    , 1367 (Fed. Cir. 2012) (“The pa-
    tentee is free to choose a broad term and expect to obtain
    the full scope of its plain and ordinary meaning unless the
    patentee explicitly redefines the term or disavows its full
    scope.”). This is not a case where the patentee has acted as
    his own lexicographer to ascribe a special meaning to “low-
    power.” Indeed, the patentee carefully stated the intent
    not to limit the claims by making them strictly coextensive
    with descriptions of embodiments and instead sought to
    “cover all alternatives, modifications, and equivalents” of
    the claimed invention. ’842 patent col. 4 ll. 19–26; see also
    
    id.
     col. 14 ll. 6–9. I therefore disagree with the majority’s
    importation of results-oriented, functional language from a
    preferred embodiment and rewriting of the claim.
    The Board correctly pointed out that none of the claims
    contain functional language. J.A. 25. And “[w]here the
    function is not recited in the claim itself by the patentee,
    we do not import such a limitation.” Ecolab, Inc. v. Envi-
    rochem, Inc., 
    264 F.3d 1358
    , 1367 (Fed. Cir. 2001). Limited
    range is not claimed as a part of the invention, and neither
    is the function of preventing unlawful interception of elec-
    tromagnetic signals.
    Second, the Board’s factual findings are supported by
    substantial evidence and require our deference. See Teva
    Pharm. USA, Inc. v. Sandoz, Inc., 
    135 S. Ct. 831
    , 841–42
    (2015). How a person of ordinary skill in the art would un-
    derstand “low-power transceiver” was an issue of disputed
    fact between the parties and their experts that the Board
    properly resolved in construing the term according to its
    plain and ordinary meaning based on the evidence pre-
    sented. See 
    id. at 840
     (“[C]laim construction has eviden-
    tiary underpinnings and . . . courts construing patent
    claims must sometimes make credibility judgments about
    witnesses.” (internal quotations removed)). As the Board
    found, “low-power” is not a complex term; it has a well-un-
    derstood plain meaning. In the context of transmitters, it
    SIPCO, LLC v. EMERSON ELECTRIC CO.                           9
    is a transmitter that consumes less power. See J.A. 23. By
    extension, the Board relied on extrinsic evidence that the
    term “low-power transceiver” is well known in the art and
    carries an ordinary meaning of a “transceiver that con-
    sumes less power.” 
    Id.
    The Board recognized that the use of low-power trans-
    ceivers can impact transmission range, but it credited the
    testimony of Dr. Geier that the meaning of “low-power
    transceiver” is not limited by this feature. Dr. Geier testi-
    fied that while you could have less range with lower-power
    transmitters, the transmission range depended on numer-
    ous other factors, such as signal frequency, environment,
    and sensor sensitivity. Dr. Geier testified that transmis-
    sion power does not necessarily result in a change of the
    transmission range. The majority rejects Dr. Geier’s testi-
    mony by reweighing the evidence and making its own fac-
    tual finding that his testimony was “less than conclusive.”
    Maj. Op. 12. But whether “power” necessarily affects
    transmission range is a subsidiary issue of fact resolved by
    the Board that requires our deference. See Knowles Elecs.
    LLC v. Cirrus Logic, Inc., 
    883 F.3d 1358
    , 1362 (Fed. Cir.
    2018) (noting that we review the Board’s underlying fac-
    tual findings based on extrinsic evidence, such as expert
    testimony, for substantial evidence).
    Despite reweighing the extrinsic evidence itself, the
    majority asserts that the intrinsic record is so clear that
    the Board’s reliance on Emerson’s expert testimony should
    be dismissed. Maj Op. 9, 12 (citing Eidos Display, LLC v.
    AU Optronics Corp., 
    779 F.3d 1360
    , 1365 (Fed. Cir. 2015)
    (“To the extent the district court considered extrinsic evi-
    dence in its claim construction order or summary judgment
    order, that evidence is ultimately immaterial to the out-
    come because the intrinsic record is clear.”)). It is also true
    that we have held that we may affirm a Board decision that
    is supported on the intrinsic record alone. See Profectus
    Tech. LLC v. Huawei Techs. Co., 
    823 F.3d 1375
    , 1381 (Fed.
    Cir. 2016) (citing Cambrian Sci. Corp. v. Cox Commc’ns,
    10                        SIPCO, LLC v. EMERSON ELECTRIC CO.
    Inc., 617 F. App’x 989, 993 (Fed. Cir. 2015) (affirming claim
    construction without addressing extrinsic evidence be-
    cause “the intrinsic evidence fully determines the proper
    construction of the contested claim term”)). Further,
    “[e]xtrinsic evidence may not be used ‘to contradict claim
    meaning that is unambiguous in light of the intrinsic evi-
    dence.’” 
    Id.
     (citing Phillips, 415 F.3d at 1324). But here,
    the intrinsic record is not so clear. The term “low-power
    transceiver” as used in the patent is susceptible to more
    than one reasonable interpretation, the majority’s con-
    struction is not unambiguously supported by the intrinsic
    record, and the Board’s construction is not contradicted by
    the claim language or the intrinsic evidence.
    In my view, the extrinsic record in this case is particu-
    larly relevant to understand how a person of ordinary skill
    in the art would understand the disputed term at the time
    the patent issued. See Teva, 135 S. Ct. at 841–42. This is
    particularly true post-Aatrix, which restricted this court’s
    ability to decide legal issues and disregard existing under-
    lying factual disputes. See Aatrix Software, Inc. v. Green
    Shades Software, Inc., 
    882 F.3d 1121
    , 1128 (Fed. Cir. 2018)
    (noting that in deciding questions of law “there can be sub-
    sidiary fact questions which must be resolved en route to
    the ultimate legal determination”).
    The majority’s claim construction analysis redefines
    the term “low-power transceiver” by importing a functional
    limitation from the written description and introducing
    ambiguity into the claim. As a result, the majority con-
    strues “low-power transceiver” to mean a transceiver that
    can only transmit and receive signals within a “limited
    transmission range.” Maj. Op. 12–13. This rewriting of the
    claim alters the scope and recites an invention that is dif-
    ferent from the invention claimed in the ’842 patent.
    For the foregoing reasons, I dissent.
    SIPCO, LLC v. EMERSON ELECTRIC CO.                       11
    III.
    While I disagree with the majority’s decision to reverse
    on claim construction, I share the majority’s concern about
    the Board’s avoidance of the first prong of the regulatory
    definition of “technological invention” under 
    37 C.F.R. § 42.301
    . Remand is necessary so that the Board may in
    the first instance interpret § 42.301(b)(1).