Court Opinion

ID: 4586831
Source: CourtListenerOpinion
Date Created: 2020-11-17 16:00:37.467734+00
Date Added: 2024-06-11T13:48:53.276336
License: Public Domain

Case: 18-1635    Document: 76    Page: 1   Filed: 11/17/2020

   United States Court of Appeals
       for the Federal Circuit
                  ______________________

                      SIPCO, LLC,
                        Appellant

                            v.

                EMERSON ELECTRIC CO.,
                      Appellee

     ANDREI IANCU, UNDER SECRETARY OF
   COMMERCE FOR INTELLECTUAL PROPERTY
    AND DIRECTOR OF THE UNITED STATES
      PATENT AND TRADEMARK OFFICE,
                   Intervenor
             ______________________

                        2018-1635
                  ______________________

     Appeal from the United States Patent and Trademark
 Office, Patent Trial and Appeal Board in No. CBM2016-
 00095.
                  ______________________

                Decided: November 17, 2020
                  ______________________

    GREGORY J. GONSALVES, Gonsalves Law Firm, Falls
 Church, VA, for appellant.

    DOUGLAS HALLWARD-DRIEMEIER, Ropes & Gray LLP,
 Washington, DC, for appellee. Also represented by SAMUEL
 LAWRENCE BRENNER, Boston, MA; JAMES RICHARD
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 2                        SIPCO, LLC   v. EMERSON ELECTRIC CO.

 BATCHELDER, JAMES LAWRENCE DAVIS, JR., East Palo Alto,
 CA.

     KAKOLI CAPRIHAN, Office of the Solicitor, United States
 Patent and Trademark Office, Alexandria, VA, for interve-
 nor. Also represented by THOMAS W. KRAUSE, FARHEENA
 YASMEEN RASHEED, MOLLY R. SILFEN.
                 ______________________

     Before O’MALLEY, REYNA, and CHEN, Circuit Judges.
 CHEN, Circuit Judge.
     This appeal has returned to us on remand from the Su-
 preme Court of the United States. In its prior appearance
 in this court, SIPCO appealed from a final written decision
 of the Patent Trial and Appeal Board (Board) in a covered
 business method (CBM) review of SIPCO’s 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 to
 recite patent-ineligible subject matter under 35
 U.S.C. § 101. The Board also found the claims unpatenta-
 ble for obviousness under 35 U.S.C. § 103 in view of U.S.
 Patent No. 5,157,687 (Tymes).
     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), Pub. L. No. 112-
 29, § 18(d), 125 Stat. 284, 331 (2011).          Under 37
 C.F.R. § 42.301(b), the Board is required to consider
 “whether the claimed subject matter as a whole recites a
 technological 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 found that the patent contained no
 technical solution to a technical problem.
    We reversed the Board’s finding that the ’842 patent
 does not satisfy the second part of the regulation defining
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 SIPCO, LLC   v. EMERSON ELECTRIC CO.                       3

 “technological invention.” SIPCO, LLC v. Emerson Elec.
 Co., 939 F.3d 1301, 1313 (Fed. Cir. 2019), judgment va-
 cated, 207 L. Ed. 2d 1049 (June 15, 2020). We then vacated
 and remanded for the Board to consider the applicability of
 § 42.301(b)’s first part.
     Emerson petitioned for rehearing en banc, which this
 court denied. Emerson then filed a petition for a writ of
 certiorari in the Supreme Court presenting the following
 question:
     Whether 35 U.S.C. [§] 324(e) permits review on ap-
     peal of the Director’s threshold determination, as
     part of the decision to institute CBM review, that
     the challenged patent qualifies as a CBM patent.
 Petition for a Writ of Certiorari at I, Emerson Elec. Co. v.
 SIPCO, LLC, 2020 WL 550758 (Jan. 30, 2020) (No. 19-966).
 The Supreme Court granted the petition, vacated our prior
 opinion, and remanded “for further consideration in light
 of Thryv, Inc. v. Click-to-Call Technologies, LP,” 140 S. Ct.
1367 (2020). Emerson Elec. Co. v. SIPCO, LLC, 207 L. Ed.
2d 1049 (June 15, 2020).
     Following remand, we recalled our mandate, reopened
 this appeal, and ordered supplemental briefing on July 21,
 2020. Both parties responded with supplemental briefing
 addressing the effect of Thryv on this appeal. The Director
 of the Patent Office moved to intervene on September 4,
 2020, and we granted the motion on September 28, 2020.
     The Supreme Court’s decision in Thryv, we hold, makes
 clear that the threshold determination that SIPCO’s ’842
 patent qualifies for CBM review is a decision that is non-
 appealable under 35 U.S.C. § 324(e). We therefore are pre-
 cluded from reviewing SIPCO’s challenge to that threshold
 determination. As to the Board’s unpatentability decision,
 we affirm the Board’s determination that the challenged
 claims would have been obvious in view of Tymes without
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 4                         SIPCO, LLC   v. EMERSON ELECTRIC CO.

 reaching the Board’s patent-ineligibility decision under
 § 101.
                        BACKGROUND
      The ’842 patent describes a two-step communication
 path in which a remote device first communicates through
 a low-power wireless connection to an intermediate node,
 which in turn connects to a central location. ’842 patent at
 claim 1. For example, a user may wish to replace the bank
 and credit cards he or she carries with a remote transmit-
 ting 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 transmitter transmits the user’s banking card
 account and PIN information to, for example, the ATM. Id.
 at col. 5 ll. 43–61. The ATM then transmits the infor-
 mation over a network (e.g., a public-switched telephone
 network) to the central location for verification. Id. at col.
 7 ll. 41–44.
     Claims 1 and 17 are representative for the purposes of
 SIPCO’s challenge to the Board’s obviousness ruling.
 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
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 SIPCO, LLC   v. EMERSON ELECTRIC CO.                        5

     comprising one or more devices in the network of
     addressable device[s], the controller further config-
     ured to receive one or more signals via the low-
     power transceiver and communicate information
     contained within the signals to the central location.
Id. at claim 1 (emphases added). Claim 17 is similar to
 claim 1, but instead of a low-power transceiver that wire-
 lessly transmits a signal to a network of addressable de-
 vices, claim 17 recites “a low-power transceiver that is
 configured to wirelessly receive a signal including an in-
 struction data from a remote device.” Id. at claim 17 (em-
 phasis added).
     In its final written decision, the Board determined that
 claims 1 and 17 would have been obvious to a skilled arti-
 san in view of Tymes. Three claim limitations are relevant
 to this appeal. First, the Board construed “low-power
 transceiver” as “encompass[ing],” but not limited to, a de-
 vice that “transmits and receives signals having a limited
 transmission range.” Emerson Electric Co. v. Sipco, No.
 CBM2016-00095, 2018 WL 446681, at *19 (P.T.A.B. Jan.
 16, 2018). At the same time, however, the Board deter-
 mined the claims would have been obvious even under
 SIPCO’s proposed construction of “low power” as requiring
 a limited transmission range. Id.
     Second, the Board construed “instruction data” as
 “items of information that allow[] a computer system to
 identify a function or an instruction to be performed.” Id.
 Based on that construction, the Board concluded that
 Tymes discloses a low-power transceiver that “wirelessly
 transmit[s] a signal comprising instruction data for deliv-
 ery to a network of addressable devices” as recited in claim
 1, and also discloses “a low-power transceiver that is con-
 figured to wirelessly receive a signal including an instruc-
 tion data from a remote device” as recited in claim 17. Id.
 at *23–24.
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 6                         SIPCO, LLC   v. EMERSON ELECTRIC CO.

     Finally, the Board found that Tymes disclosed a “con-
 troller configured to establish a communication link be-
 tween at least one device in the network of addressable
 devices and the central location using an address included
 in the signal.” Id. at *24.
                         DISCUSSION
      I. The Board’s Decision to Institute CBM Review
      In Thryv, the Supreme Court held that the Patent Of-
 fice’s decision as to whether earlier litigation bars institu-
 tion of inter parties review under 35 U.S.C. § 315(b) is
 “final and nonappealable” under the “No Appeal” provision
 of 35 U.S.C. § 314(d). See 140 S. Ct. at 1373. Section 315(b)
 provides that “[a]n inter partes review may not be insti-
 tuted if the petition requesting the proceeding is filed more
 than 1 year after the date on which the petitioner, real
 party in interest, or privy of the petitioner is served with a
 complaint alleging infringement of the patent.” The Court
 explained that “a party generally cannot contend on appeal
 that the agency should have refused ‘to institute an inter
 partes review.’” Thryv, 140 S. Ct. at 1373. In particular,
 judicial review is not available “where the grounds for at-
 tacking the decision to institute inter partes review consist
 of questions that are closely tied to the application and in-
 terpretation of statutes related to the Patent Office’s deci-
 sion to initiate inter partes review.” Id. (quoting Cuozzo
 Speed Techs., LLC v. Lee, 136 S. Ct. 2131, 2141–42 (2016)).
 “Because § 315(b) expressly governs institution and noth-
 ing more, a contention that a petition fails under § 315(b)
 is a contention that the agency should have refused ‘to in-
 stitute an inter partes review.’” Id. (citing § 314(d)).
     Our court has recently considered Thryv’s application
 to the petition requirement in 35 U.S.C. § 312(a)(2), which
 requires a petitioner to identify “all real parties in inter-
 est.” ESIP Series 2, LLC v. Puzhen Life USA, LLC, 958
F.3d 1378, 1385–86 (Fed. Cir. 2020). We explained that,
 for purposes of applying the “No Appeal” provision in
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 SIPCO, LLC   v. EMERSON ELECTRIC CO.                        7

 § 314(d), a challenge based on a petitioner’s failure to iden-
 tify all “real parties in interest” was no different than the
 challenge to § 315(b)’s time bar in Thryv. Id. at 1386. Both
 were contentions that the agency should have refused to
 institute inter partes review, and thus § 314(d) barred ju-
 dicial review.
      Covered business method patent review is subject to a
 similar, materially identical “No Appeal” provision in 35
 U.S.C. § 324(e), which recites that “[t]he determination by
 the Director whether to institute a post-grant review under
 this section shall be final and nonappealable.” Just as
 “[s]ection 315(b)’s time limitation is integral to, indeed a
 condition on, institution” of inter partes review, Thryv, 140
S. Ct. at 1373, AIA § 18(a)(1)(E) likewise commands that
 “[t]he Director may institute a transitional proceeding
 [CBM review] only for a patent that is a covered business
 method patent.” 125 Stat. at 329–30. AIA § 18(d) further
 conditions institution of CBM review for only those patents
 that “claim[] a method or corresponding apparatus for per-
 forming data processing or other operations used in the
 practice, administration, or management of a financial
 product or service, except that the term does not include
 patents for technological inventions.” Id. at 331. The de-
 termination that a patent qualifies for CBM review is thus
 expressly and exclusively tied to the decision to institute
 the proceeding.
      Although SIPCO urges that the Board exceeded its au-
 thority in conducting a CBM review for a patent that
 SIPCO contends is not a CBM patent, Thryv held that the
 “No Appeal” provision barred judicial review of the thresh-
 old decision to institute inter partes review despite the ar-
 gument that the Board exceeded its statutory authority in
 doing so. See 140 S. Ct. at 1380 (Gorsuch, J., dissenting)
 (arguing that the holding in Thryv permits the agency to
 “act in defiance of plain congressional limits on its author-
 ity”). We also note that, contrary to SIPCO’s argument
 that judicial review is necessary to “[e]nsure that post
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 8                         SIPCO, LLC   v. EMERSON ELECTRIC CO.

 grant review ‘proceeds in accordance with the law’s de-
 mand,’” Appellant’s Supplemental Br. at 10, and in con-
 trast to joinder decisions “made after a determination that
 a petition warrants institution,” Facebook, Inc. v. Windy
 City Innovations, LLC, 973 F.3d 1321, 1332 (Fed. Cir.
 2020), SIPCO’s “appeal challenges not the manner in which
 the agency’s review ‘proceeds’ once instituted, but whether
 the agency should have instituted review at all,” Thryv, 140
S. Ct. at 1376. We see no meritorious distinction between
 the application of § 314(d) to prohibit judicial review of
 § 315(b)’s time bar or § 312(a)(2)’s “real parties in interest”
 requirement and the application of § 324(e) to prohibit re-
 view of AIA § 18(b)’s restriction on CBM review to only cer-
 tain patents. Under Thryv, § 324(e) prohibits judicial
 review of SIPCO’s challenge because it is nothing more
 than a contention that the agency should have refused to
 institute CBM review. 1
                        II. Obviousness
     Obviousness “is a question of law based on underlying
 findings of fact.” In re Gartside, 203 F.3d 1305, 1316 (Fed.
 Cir. 2000). We review the Board’s findings regarding the
 scope and content of the prior art for substantial evidence.
 Rambus Inc. v. Rea, 731 F.3d 1248, 1251–52 (Fed. Cir.
 2013).

     1    We recognize that Thryv has abrogated our prac-
 tice of reviewing whether the Board’s institution of CBM
 review breached the limits on its authority imposed by
 AIA § 18(d). See, e.g., Versata Dev. Grp., Inc. v. SAP Am.,
 Inc., 793 F.3d 1306, 1322 (Fed. Cir. 2015). But “[i]t is es-
 tablished that a later panel can recognize that the court’s
 earlier decision has been implicitly overruled as incon-
 sistent with intervening Supreme Court authority.” Troy
 v. Samson Mfg. Corp., 758 F.3d 1322, 1326 (Fed. Cir. 2014).
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     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 con-
 struing terms of this expired patent. Emerson Electric Co.,
 2018 WL 446681, at *7; see also In re Rambus Inc., 694 F.3d
42, 46 (Fed. Cir. 2012). We review factual determinations
 concerning extrinsic evidence underlying the Board’s claim
 construction for substantial evidence and the ultimate con-
 struction de novo. AC Techs. S.A. v. Amazon.com, Inc., 912
F.3d 1358, 1365 (Fed. Cir. 2019).
     SIPCO’s challenge to the Board’s obviousness ruling fo-
 cuses on claim limitations relating to “low power trans-
 ceiver,” “instruction data,” and “establishing a
 communication link.” We address each in turn.
                    a. Low Power Transceiver
     SIPCO argues that the Board should have construed
 “low power transceiver” to require “a device that transmits
 and receives signals having a limited transmission range.”
 Appellant’s Br. at 20. But the Board determined that the
 claimed “low power transceiver” would have been obvious
 over Tymes regardless of whether “low power” restricts the
 transceiver to having limited transmission range. We con-
 clude that the Board’s obviousness determination was sup-
 ported by substantial evidence even under SIPCO’s
 proposed construction. 2

     2   In our prior, now vacated, opinion in this appeal,
 we explained that “a skilled artisan would understand ‘low
 power’ to mean that the transceiver operates at a power
 level corresponding to ‘limited transmission range.’”
 SIPCO, 939 F.3d at 1308 (footnote omitted). We see no
 need to revisit that construction because we find that the
 Board’s obviousness determination is supported by sub-
 stantial evidence even under the construction of that term
 proposed by SIPCO. While we recently resolved a claim
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 10                         SIPCO, LLC   v. EMERSON ELECTRIC CO.

     Tymes discloses a system in which remote units, such
 as barcode readers, communicate with a central computer.
 Tymes at col. 3 ll. 38–41. Like SIPCO’s claimed invention,
 Tymes’s remote units utilize a two-step communication
 path in which base stations serve as intermediate nodes for
 communication between the remote units and the central
 computer. Id. at col. 1 ll. 8–13. SIPCO argues that, under
 its proposed construction of a low power transceiver as a
 “transceiver that transmits and receives signals having a
 limited transmission range,” Appellant’s Br. at 20, the
 Board was not supported by substantial evidence in deter-
 mining that it would have been obvious to utilize low power
 transceivers in Tymes’s base stations. We disagree.
     As the Board correctly noted, Tymes itself emphasizes
 that its network of remote units, base stations, and a cen-
 tral computer is a low power network:
      It is an object of the present invention to provide an
      improved, low-cost, low-power, data communica-
      tion network in which a number of remote terminal
      units are able to send packets of data to a central
      station, and, in most cases, to receive acknowledge
      signals and data from the central station, prefera-
      bly a network using an RF link.

 construction dispute involving the same parties where we
 agreed with the Board that “low power RF signal,” in the
 context of the claims at issue in that case, did not require
 a limited transmission range, Emerson Elec. Co. v. SIPCO,
 LLC, No. 19-1301, 2020 WL 5816758 (Fed. Cir. Sept. 30,
 2020), that decision has no impact on our earlier decision
 or on our decision here. Importantly, that case involved
 different patents, in entirely different patent families, with
 different specifications. We find it unsurprising that simi-
 larly worded claims may be construed differently when pre-
 sented in such different contexts and different records.
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 SIPCO, LLC   v. EMERSON ELECTRIC CO.                      11

 Tymes at col. 2 ll. 36–41 (emphasis added). Tymes further
 explains that its system “may be needed in a commercial
 facility (usually indoor),” which the Board found to indicate
 that the transceivers need only transmit over the limited
 distances within a building. Id. at col. 2 ll. 44–49. As
 Tymes explains, the range of its wireless communications
 “is about 500 feet, in a commercial environment, at a power
 of about one watt.” Id. at col. 16 ll. 55–58. Moreover,
 Tymes discloses that it employs wireless links that are un-
 licensed. Id. at col. 3 ll. 55–59 (“A particular advantage of
 this type of RF data link is that a band may be used which
 does not require site licensing by the F.C.C.”). SIPCO does
 not dispute that such unlicensed communications must op-
 erate at less than or equal to one watt of power. See Emer-
 son Electric Co., 2018 WL 446681, at *21. The Board
 further credited the petitioner’s expert, Mr. Geier, who ex-
 plained that a skilled artisan would have understood such
 transmissions to be both low-power and limited-range. See
 id.; J.A. 1321–22. 3 In view of the express disclosure in
 Tymes and Mr. Geier’s testimony, the Board was supported
 by substantial evidence in concluding that it would have
 been obvious to use low-power transceivers having limited
 range in Tymes’s base station.
                       b. Instruction Data
     Two “instruction data” limitations are disputed by the
 parties. Claim 17 requires the low-power transceiver to
 “receive a signal including an instruction data from a re-
 mote device,” whereas claim 1 requires the transceiver to
 “transmit a signal comprising instruction data for delivery

     3  Although SIPCO criticizes Mr. Geier’s level of
 knowledge in the art of wireless communications and ar-
 gues that Mr. Geier is less accomplished than SIPCO’s ex-
 pert, Dr. Almeroth, “[w]e defer to the Board’s findings
 concerning the credibility of expert witnesses.” Yorkey v.
 Diab, 601 F.3d 1279, 1284 (Fed. Cir. 2010).
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 12                       SIPCO, LLC   v. EMERSON ELECTRIC CO.

 to a network of addressable devices.” ’842 patent at claims
 1, 17 (emphases added). The Board found that these limi-
 tations were disclosed by a signaling mechanism through
 which Tymes’s remote unit is reassigned to a new base sta-
 tion.
     Tymes’s remote unit is assigned to a particular base
 station through which the remote unit can communicate
 with the central station. Tymes at col. 20 ll. 56–59. These
 remote units (e.g., barcode readers) are mobile and each
 base station only covers a limited transmission range.
 When a remote unit moves outside the range of its assigned
 base station, it broadcasts a distress call from each of its
 two antennas. Any base station that receives the distress
 call then communicates with the currently assigned base
 station to reassign the remote unit, i.e., “pass the baton.”
Id. at col. 21 ll. 40–45. The newly assigned base station
 then transmits a “response packet” to the remote unit. Id.
 at col. 21 ll. 45–47.
     The Board found that receiving the distress call at a
 base station was equivalent to “receiv[ing] a signal includ-
 ing an instruction data from a remote device” as recited in
 claim 17, because the distress call instructs the base sta-
 tion to communicate with the currently assigned base sta-
 tion to determine how to reassign the remote unit.
 Emerson Electric Co., 2018 WL 446681, at *23. The Board
 also found that transmission of the response packet by the
 newly assigned base station disclosed claim 1’s “trans-
 mit[ting] a signal comprising instruction data for delivery
 to a network of addressable devices,” because the response
 packet instructed Tymes’s remote unit to cease broadcast-
 ing the distress call and use a particular antenna for com-
 munications with the newly assigned base station. Id. at
 *23–24.
     SIPCO argues that the Board erred in construing “in-
 struction data” as “items of information that allow[] a com-
 puter system to identify a function or an instruction to be
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 SIPCO, LLC   v. EMERSON ELECTRIC CO.                       13

 performed.” Id. at *10–11. SIPCO urges that the term
 should be construed as “code identifying a function to be
 performed or identifying a status that triggers a function
 to be performed.” Appellant’s Br. at 32. In SIPCO’s view,
 Tymes’s distress call and response packet do not contain
 any “code” that can be “decoded.” Id. We disagree.
     The claims recite “instruction data,” not instruction
 code. See ’842 patent at claims 1, 17. The Board correctly
 rejected SIPCO’s attempt to further restrict the plain
 meaning of the claim language. Although SIPCO identifies
 examples in the specification of “instruction code[s]” that
 map to specific combinations of bits, the Board did not err
 in declining to import exemplary embodiments of “instruc-
 tion code” from the specification into the broader claim
 term “instruction data.” See Phillips, 415 F.3d at 1323
 (“[A]lthough the specification often describes very specific
 embodiments of the invention, we have repeatedly warned
 against confining the claims to those embodiments.”).
     Even if we were to accept SIPCO’s construction, the
 Board was supported by substantial evidence in finding
 that Tymes’s distress call and response packet contain
 “code identifying a function to be performed.” Emerson
 Electric Co., 2018 WL 446681, at *23. As the Board ob-
 served, Tymes’s distress call is “a short packet consisting
 of the standard synchronization signal and its serial num-
 ber.” Id.; see also Tymes at col. 21 ll. 29–45. Contrary to
 SIPCO’s assertion that “the Board did not identify any code
 within the distress call that identifies a function to be per-
 formed,” Appellant’s Br. at 41, the Board reasonably found
 that combination of information represents a “code” in-
 structing listening base stations to perform the necessary
 steps for reassigning the remote unit, Emerson Electric Co.,
 2018 WL 446681, at *23.
     Likewise, the Board was supported by substantial evi-
 dence in finding that the “response packet” sent by a newly-
 assigned base station to a remote unit includes a “code”
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 14                        SIPCO, LLC   v. EMERSON ELECTRIC CO.

 that instructs the remote unit to stop sending distress calls
 and instead send packets using a particular antenna to the
 newly assigned base station. Emerson Electric Co., 2018
WL 446681, at *24. We disagree with SIPCO’s argument
 that “doing nothing (e.g., not sending distress calls) cannot
 possibly qualify as a function to be performed.” Appellant’s
 Br. at 41. If the remote unit truly “d[id] nothing” upon re-
 ceiving the response packet, then it would continue to send
 distress calls. Ceasing the performance of a particular task
 can itself be a function, as Mr. Geier observed and the
 Board properly credited. Emerson Electric Co., 2018 WL
446681, at *24.
           c. Establishing a Communication Link
     Claim 1 requires a “controller configured to establish a
 communication link between at least one device in the net-
 work of addressable devices and the central location using
 an address included in the signal.” ’842 patent at claim 1.
 SIPCO argues that the Board should have construed “es-
 tablishing a communication link” to mean “to set up a com-
 munication link that did not previously exist.” Appellant’s
 Br. at 42. But, as the Board explained, when Tymes’s re-
 mote unit moves outside the range of its base station and
 is subsequently reassigned, the new base station estab-
 lishes a communication link between the remote unit and
 the central host computer. Emerson Electric Co., 2018 WL
446681, at *24. This communications link through the new
 base station did not previously exist. Thus, even under
 SIPCO’s construction, substantial evidence supports the
 Board’s finding that Tymes discloses “establishing a com-
 munication link” as claimed.
     SIPCO also suggests that the new base station does not
 establish this new communication link “using an address”
 as required by claim 1. But the Board found that device
 identification 74, which the remote unit includes in its dis-
 tress call, functions as an “address” that is used to estab-
 lish this new communication link. Id. SIPCO does not offer
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 SIPCO, LLC   v. EMERSON ELECTRIC CO.                      15

 any reason why device identification 74 does not meet the
 “address” limitation, and we see none.
     Finally, to the extent that SIPCO argues that the new
 base station does not “establish” a communications link be-
 cause Tymes’s remote unit first sends a distress call before
 the new base station establishes a communications link
 with the remote unit, we agree with the Board that nothing
 in the claims “require[s] the controller to initiate the data
 transmission.” Id. SIPCO does not point to anything in
 the claims or specification suggesting that a communica-
 tions link cannot be established after the device receives a
 signal from remote units.
                          CONCLUSION
     For the reasons stated above, we affirm the Board’s de-
 termination that the claims at issue would have been obvi-
 ous in view of Tymes. We have considered SIPCO’s
 remaining arguments and find them unpersuasive.
                          AFFIRMED