Emerson Electric Co. v. Sipco, LLC

Summarize
Check Treatment

Related Cases

Case: 19-1301 Document: 59 Page: 1 Filed: 09/30/2020 NOTE: This disposition is nonprecedential. United States Court of Appeals for the Federal Circuit ______________________ EMERSON ELECTRIC CO., Appellant v. SIPCO, LLC, Cross-Appellant ______________________ 2019-1301, 2019-1490 ______________________ Appeals from the United States Patent and Trademark Office, Patent Trial and Appeal Board in No. IPR2017- 00359. ______________________ Decided: September 30, 2020 ______________________ DOUGLAS HALLWARD-DRIEMEIER, Ropes & Gray LLP, Washington, DC, for appellant. Also represented by JAMES RICHARD BATCHELDER, JAMES LAWRENCE DAVIS, JR., DANIEL W. RICHARDS, East Palo Alto, CA; STEVEN PEPE, New York, NY. GREGORY J. GONSALVES, Gonsalves Law Firm, Falls Church, VA, for cross-appellant. ______________________ Case: 19-1301 Document: 59 Page: 2 Filed: 09/30/2020 2 EMERSON ELECTRIC CO. v. SIPCO, LLC Before LOURIE, MOORE, and O’MALLEY, Circuit Judges. O’MALLEY, Circuit Judge. This is an appeal from an inter partes review proceed- ing requested by Emerson Electric Co. (“Emerson”). The U.S. Patent Trial and Appeal Board (the “Board”) con- cluded that claims 32, 34, 37–38, 55–57 and 59 (the “Ground 3 claims”) of U.S. Patent No. 6,437,692 (“the ’692 patent”) are unpatentable because they are anticipated, or would have been obvious over the Cunningham reference. J.A. 33–51. The Board concluded, however, that Emerson failed to establish, by a preponderance of the evidence, that claims 1, 3–8, and 11–14 (the “Ground 1 claims”) and claims 24–31, 42, 43, 46–49, 51–54 and 60–64 (the “Ground 2 claims”) are unpatentable. J.A. 51. Emerson appeals the Board’s findings of patentability with respect to the Ground 2 claims. Patent Owner SIPCO, LLC (“SIPCO”) cross-appeals the Board’s invalidity findings with respect to the Ground 3 claims. Because we agree with the Board’s claim construction of the “low-power radio frequency sig- nal” limitations and conclude that substantial evidence supports the Boards underlying factual findings, we affirm. I. BACKGROUND A. The ’692 Patent The ’692 patent, entitled “System and Method for Mon- itoring and Controlling Remote Devices,” relates to a com- puterized remotely operated system for monitoring, reporting on, and controlling remote systems. ’692 patent, col. 1, ll. 26–28. At the time of the invention, existing mon- itoring and controlling systems typically implemented a lo- cal network of hard-wired sensors and actuators, and a local controller. Id., col. 2, ll. 18–21. According to the pa- tent, however, these prior art systems were costly to oper- ate. Id. They involved expenses associated with developing and installing local components, as well as op- erational expenses associated with connecting functional Case: 19-1301 Document: 59 Page: 3 Filed: 09/30/2020 EMERSON ELECTRIC CO. v. SIPCO, LLC 3 sensors and controllers with the local controller. Id., col. 2, ll. 22–24. These systems were also susceptible to a single point of failure because of their reliance on local control- lers. Id., col. 5, ll. 39–40. The claimed invention of the ’692 patent does not require a local controller, and transfers sys- tem information from the remote system to a wide area net- work (“WAN”) gateway interface with integrated software applications to process that information. Id., col. 2, ll. 47– 51. As relevant to Emerson’s appeal of Ground 2, inde- pendent claims 24, 42, 49, and 60 recite a method and sys- tem for controlling remote devices and control systems implementing the above-recited system information trans- fer. Claims 24, 42, 49 and 60 all contain limitations di- rected to a computer on a WAN issuing a control signal in response to data originating from a sensor on the side of a gateway (the “control signal” limitation). J.A. 23. Inde- pendent claim 24 is illustrative and recites: 24. A method for controlling a system compris- ing: remotely collecting data from at least one sensor; processing the data into a radio-frequency (RF) signal; transmitting the RF signal, via a relatively low- power RF transceiver, to a gateway; translating the data in the RF signal into a net- work transfer protocol; sending the translated data to a computer, wherein the computer is configured to appropri- ately respond to the data generated by the at least one sensor by generating an appropriate control signal; sending the control signal via the network to the gateway; Case: 19-1301 Document: 59 Page: 4 Filed: 09/30/2020 4 EMERSON ELECTRIC CO. v. SIPCO, LLC translating the control signal from a network transfer protocol into an RF control signal; transmitting the RF control signal; receiving the RF control signal; translating the received RF control signal into an analog signal; and applying the analog signal to an actuator to effect the desired system response. ’692 patent, col. 20, ll. 43–63 (emphasis added). All of the Ground 2 claims include the control signal limitation. As relevant to SIPCO’s cross-appeal of Ground 3, inde- pendent claims 32 and 55 recite a system for monitoring remote devices and a method for collecting information and providing data services, respectively. Independent claim 32 recites: 32. A system for monitoring remote devices com- prising: at least one sensor adapted to generate an elec- trical signal in response to a physical condition; at least one wireless transmitter configured to encode the electrical signal, the wireless trans- mitter further configured to transmit the en- coded electrical signal and transmitter identification information in a low-power radio- frequency (RF) signal; at least one gateway connected a wide area net- work (WAN) configured to receive and translate the RF signal, the gateway further configured to deliver the encoded electrical signal and trans- mitter identification information to a computer on the WAN; and Case: 19-1301 Document: 59 Page: 5 Filed: 09/30/2020 EMERSON ELECTRIC CO. v. SIPCO, LLC 5 a computer configured to execute at least one computer program that formats and stores select information responsive to the electrical signal for retrieval upon demand from a remotely located device. ’692 patent, col. 21, ll. 19–36 (emphasis added). Claims 34, 36, 37, and 38 depend from claim 32. Independent claim 55 recites: 55. A method for collecting information and providing data services comprising: adaptively configuring a data translator at the output of a local controller, wherein the data translator converts the output data stream into an information signal consisting of a transmitter code and an information field; adaptively configuring at least one transmitter with the data translator, wherein the transmitter converts the information signal into a low-power RF signal; placing a plurality of relatively low-power radio frequency (RF) transceivers dispersed geograph- ically wherein the low-power RF signal is re- ceived and repeated as required to communicate the information signal to a gateway, the gateway providing access to a WAN; translating the low-power RF signal within the gateway into a WAN compatible data transfer protocol; transferring the translated low-power RF signal via the WAN to a computer wherein the computer is configured to manipulate and store data pro- vided in said signal; and granting client access to the computer. Case: 19-1301 Document: 59 Page: 6 Filed: 09/30/2020 6 EMERSON ELECTRIC CO. v. SIPCO, LLC ’692 patent, col. 23 l. 43–col. 24 l. 5 (emphasis added). Claims 56–57, and 59 depend from claim 55. B. Cunningham U.S. Patent No. 6,124,806 (“Cunningham”), entitled “Wide Area Remote Telemetry,” issued on September 26, 2000. Cunningham relates to “the fields of automatic me- ter reading of electric, gas, water meters and other sys- tems,” including systems that can communicate with data collection modules via wireless transmission. J.A. 1045, col. 1 ll. 15–18; J.A. 1047, col. 6 ll. 11–50. The reference discloses a remote-device monitoring system that uses a sensor interface module, a data collection module, commer- cially available information transmission systems, and a host module. J.A. 1046, col. 4 ll. 51–53. According to Cunningham, the monitoring system op- erates as follows: (1) the sensor interface modules gather customer demand and usage information; (2) the sensor in- terface modules transmit the information to the data col- lection module over unlicensed radio frequency bands; (3) the data collection module transmits information to the host module over commercially available information transmission systems; (4) the host module gathers, stores, and processes the information; and (5) the host module communicates the processed information as needed to ap- propriate consumers using commercially available infor- mation transmission systems. J.A. 1046, col. 4, ll. 54–67. Cunningham asserts that the above-described system al- lows for near real-time information processing that is sim- plified relative to then-existing systems. J.A. 1046, col. 4, ll. 42–46. C. Procedural History On November 30, 2016, Emerson filed a petition re- questing inter partes review of claims 1, 3–8, and 11–14, 24–32, 34, 36–38, 42, 43, 46–49, 51–57, and 59–64, present- ing three grounds of unpatentability. J.A. 2, 93. On June Case: 19-1301 Document: 59 Page: 7 Filed: 09/30/2020 EMERSON ELECTRIC CO. v. SIPCO, LLC 7 1, 2017, the Board determined that Emerson had a reason- able likelihood of prevailing on Ground 3 but not Grounds 1 and 2. J.A. 3. Accordingly, the Board instituted an inter partes review on the Ground 3 claims, but did not institute review on the claims challenged under Grounds 1 and 2. Id. The Board held an oral hearing on January 24, 2018. Id. After the Supreme Court issued its decision in SAS In- stitute v. Iancu, 138 S. Ct. 1348 (2018), the Board modified its institution decision to include all challenged claims on all grounds presented in Emerson’s petition. J.A. 597. The Board denied Emerson’s request to obtain and file addi- tional evidence, but authorized the parties to file additional briefing with respect to the newly instituted grounds. J.A. 608. The Board held a supplemental oral hearing on Sep- tember 27, 2018. J.A. 718–759. On November 28, 2018, the Board issued its Final Written Decision. J.A. 1–52. The Board determined that Emerson failed to prove, by a preponderance of the evi- dence, that the Ground 1 and Ground 2 claims are un- patentable. J.A. 19–33. The Board, however, concluded that the Ground 3 claims are unpatentable because they are anticipated or would have been obvious in light of Cun- ningham. J.A. 33–51. In reaching this determination, the Board held that the “low-power radio frequency (RF) sig- nal” and “low-power RF signal” terms (the “low-power RF signal” limitations) should be given their “plain and ordi- nary meaning,” or “construed to encompass transmit- ters/transceivers that transmit low power signals.” J.A. 14–15. Applying this construction, the Board found that the Cunningham reference discloses “low power, radio fre- quency transmissions.” J.A. 14. Emerson timely appeals the Board’s Final Written De- cision with respect to the Ground 2 claims. SIPCO cross- appeals the Board’s final decision with respect to the Case: 19-1301 Document: 59 Page: 8 Filed: 09/30/2020 8 EMERSON ELECTRIC CO. v. SIPCO, LLC Ground 3 claims. We have jurisdiction pursuant to 28 U.S.C. § 1295(a)(4)(A). II. DISCUSSION Emerson appeals the Board’s determination with re- spect to the Ground 2 claims. It challenges the Board’s (1) factual findings that Cunningham does not disclose the “control signal” limitation and that the prior art does not disclose a “translating” limitation and (2) refusal to grant Emerson’s request to submit new evidence. Appellant Br. 25–27. SIPCO cross-appeals the Board’s obviousness de- termination with respect to the Ground 3 claims. It objects to the Board’s (1) claim construction of the “low-power RF signal” limitations and (2) factual findings that Cunning- ham discloses relatively “low-power” transceivers and a gateway that delivers an “encoded electrical signal” to a computer on the WAN. Appellee Br. 25–26. We address each issue in turn. A. Substantial Evidence Supports the Board’s Findings that Cunningham Does Not Disclose the “Control Signal” or “Translating” Limitations of the Ground 2 Claims We review the Board’s legal determination of obvious- ness de novo, and its underlying factual findings for sub- stantial evidence. PPC Broadband, Inc. v. Corning Optical Commc’ns RF, LLC, 815 F.3d 747, 751 (Fed. Cir. 2016). Substantial evidence is “such relevant evidence as a rea- sonable mind might accept as adequate to support a con- clusion.” In re Gartside, 203 F.3d 1305, 1316 (Fed. Cir. 2000). In its Final Written Decision, the Board found that the Ground 2 claims were not obvious, because, inter alia, Cun- ningham does not satisfy the “control signal” or “translat- ing” limitations. J.A. 24–29. Per the language of the claims, the “control signal” must be capable of being “trans- lated” into an analog signal so that it can control a device. See, e.g., ’692 patent, col. 20 ll. 54–63; id., col. 22 ll. 24–37; Case: 19-1301 Document: 59 Page: 9 Filed: 09/30/2020 EMERSON ELECTRIC CO. v. SIPCO, LLC 9 id., col. 23 ll. 8–27. Cunningham’s “controlling infor- mation,” however, refers to “varying utility prices,” and the Board determined that these utility prices do not constitute a “control signal” because they “do not cause a controlling action to be done to the device.” J.A. 27. The Board also concluded that Emerson failed to establish how these util- ity prices could be “translated” from a network transfer protocol into an RF control signal, and then from an RF control into an analog signal. J.A. 27–28. Emerson argues that the Board’s factual findings are erroneous because they are unsupported by substantial evidence. We disagree. Cunningham discloses a device adjust- ment module (“DAM”) that monitors and controls the oper- ation of various devices and applications. J.A. 1067, col. 46 ll. 64–67. The reference explains, as an example, that a DAM can be used to control a thermostat, and that by re- ceiving “controlling information,” i.e., “varying utility prices,” from a host module, the DAM can “adjust the oper- ation usage to stay below increased billing increment costs for energy supply and usage.” J.A. 1067–68, col. 46 l. 64– col. 47, l. 10. The disclosed “utility prices,” however, only serve as information, not control signals. In the context of the thermostat example, “some calculation must be done on those prices outside of the HVAC device to determine whether a change to a device setting should be made.” J.A. 27 (quoting J.A. 1067–68, col. 46 l. 62–col. 47 l. 10). “While ‘utility prices’ may be information related to controlling the device or even used in determining whether to control the device[,] they do not cause a controlling action to be done to the device.” J.A. 27. Thus, substantial evidence sup- ports the Board’s finding that the “controlling information” in Cunningham is not a “control signal.” Emerson posits that, even if the Cunningham reference is deficient, the missing limitation is satisfied by U.S. Pro- visional Application No. 60/058,978 (the “’978 provisional”), which is incorporated to Cunningham. Appellant Br. 49. Emerson maintains that the Board improperly Case: 19-1301 Document: 59 Page: 10 Filed: 09/30/2020 10 EMERSON ELECTRIC CO. v. SIPCO, LLC “disregard[ed] the disclosures of the ’978 [p]rovisional,” and accordingly, its conclusions are unsupported by substantial evidence. Reading Emerson’s opening brief, one might be led to believe that the Board’s consideration of the ’978 provi- sional was cursory. But a review of the Board’s Final Writ- ten Decision establishes the opposite—that the Board did consider the reference and, over five pages, explained why the disclosure was lacking. See J.A. 28–33. As the Board recognized, the ’978 provisional discloses “routines to re- duce the amount of energy used by monitoring and control- ling HVAC and lighting usage,” J.A. 1435, but it does not disclose sending any control signals from the computer to the actuator, as required by the claims. J.A. 30. And even if we assume that the disclosed “Williams Network Control Center” creates control signals, the reference does not dis- close how those signals are translated from network trans- fer protocol to RF signals, and then from RF signals to an analog signal. See J.A. 14. We also find that substantial evidence supports the Board’s finding that a POSA would not have been motivated to combine the ’978 provisional embodiment with Cunningham’s “utility prices” embodi- ment, such that the host module sends “control signals” in- stead of mere “controlling information.” As the Board noted, “in Cunningham, the [DAM]—which is not on the network but rather on the other side of the asserted gate- way—uses the price information, along with locally-ob- tained energy usage information, to generate control signals.” J.A. 32–33. Thus, substantial evidence supports the Board’s findings that Cunningham does not disclose the “control signal” limitation. Because substantial evidence supports the Board’s findings that Cunningham fails to disclose a “control sig- nal,” Emerson’s arguments with respect to the “translat- ing” limitation necessarily fail. The Ground 2 claims recite “translating the control signal from a network transfer pro- tocol into an RF control signal” and “translating the Case: 19-1301 Document: 59 Page: 11 Filed: 09/30/2020 EMERSON ELECTRIC CO. v. SIPCO, LLC 11 received RF control signal into an analog signal.” ’692 pa- tent, col. 20 ll. 54–63 (emphasis added); see also id., col. 22 ll. 24–37; id., col. 23 ll. 8–27. Thus, if the prior art reference fails to disclose a “control signal,” the “translating” limita- tion cannot be met. Emerson argues that the Board failed to consider other references, such as McGowan and Mason, that allegedly teach “translating control signals from a net- work transfer protocol into an RF control signal” and from an “RF control signal into an analog signal.” Appellant Br. 54–59. But these references only teach the translating pro- cess—they do not disclose the “control signal” itself. See, e.g., J.A. 991, col. 1 ll. 10–13 (“The present invention pro- vides a method and system by which a fixed network radio frequency (RF) communication system is made compliant with the standard CEBus protocol.”); J.A. 1069 (disclosing the digital to analog conversion). Indeed, Emerson’s peti- tion relied on these references, not for their disclosure of a “control signal,” but for their teachings directed to the translating a signal into an RF signal, and from an RF sig- nal to an analog signal. Compare J.A. 150 (citing to Cun- ningham for its alleged disclosure of “generating an appropriate control signal”), with J.A. 152–53 (“To the ex- tent that the Board does not believe that Cunningham’s gateway (data collection module) performs the claimed translating and transmitting of claim elements [24h] and [24i], it would have been obvious to do so . . . Alternatively, Mason discloses that a gateway (node 18) translates a con- trol signal from a network transfer protocol (TCP/IP) into a RF control signal (CEBUS RF protocol signal), which is thereafter transmitted to the appropriate meter.”) and J.A. 154–55 (“Cunningham, however, does not explicitly dis- close translating the received RF control signal into an an- alog signal and thereafter applying the analog signal to an actuator to effect the desired system response. McGowan teaches this concept.”). Accordingly, we conclude that the Board’s factual find- ings that Cunningham failed to disclose the “control signal” Case: 19-1301 Document: 59 Page: 12 Filed: 09/30/2020 12 EMERSON ELECTRIC CO. v. SIPCO, LLC and “translating” limitations are supported by substantial evidence. B. The Board Did Not Abuse its Discretion in Denying Emerson’s Expert Declaration “We review the Board’s evidentiary ruling for abuse of discretion which may be found if the Board violated gov- erning law.” Belden Inc. v. BerkTek LLC, 805 F.3d 1064, 1077-78 (Fed. Cir. 2015). “An abuse of discretion is found if the decision: (1) is clearly unreasonable, arbitrary, or fan- ciful; (2) is based on an erroneous conclusion of law; (3) rests on clearly erroneous fact finding; or (4) involves a rec- ord that contains no evidence on which the Board could ra- tionally base its decision.” Bilstad v. Wakalopulos, 386 F.3d 1116, 1121 (Fed. Cir. 2004). After the Board amended its institution decision to in- clude all challenged claims on all grounds presented in Em- erson’s petition, the petitioner indicated that, in addition to supplemental briefing, it would like “to obtain and sub- mit additional evidence.” J.A. 605. The Board authorized Emerson to submit supplemental briefing, but denied its request to obtain and file additional evidence. J.A. 608. Citing to 37 C.F.R. § 42.23(b), the Board explained that a petitioner is generally “limited to the petition and associ- ated evidence with regard to the ground, and may not sub- mit a reply or additional evidence.” J.A. 606. It also noted that Emerson’s reliance on cases such as Genzyme Thera- peutic Products v. Biomarin Pharm. Inc., 825 F.3d 1360 (Fed. Cir. 2016) was inapposite, because those cases con- sidered whether the introduction of new evidence preju- diced the patent owner, not whether the Board was required to allow the petitioner to introduce new evidence. J.A. 606. Emerson now argues on appeal that the Board’s refusal to allow Emerson to submit new evidence “violated the APA and Due Process,” and speculates that the Board “would almost certainly not have repeated its erroneous Case: 19-1301 Document: 59 Page: 13 Filed: 09/30/2020 EMERSON ELECTRIC CO. v. SIPCO, LLC 13 reading of Cunningham’s disclosures.” Appellant Br. 31, 61. We find that the Board acted within its discretion. As we explained in Intelligent Bio-Systems, Inc. v. Illumina Cambridge Ltd., 821 F.3d 1359 (Fed. Cir. 2016), “[i]t is of the utmost importance that petitioners in the IPR proceed- ings adhere to the requirement that the initial petition identify ‘with particularity’ the ‘evidence that supports the grounds for the challenge to each claim.’” Id. at 1369 (quot- ing 35 U.S.C. § 312(a)(3)). “All arguments for the relief re- quested in a motion must be made in the motion. A reply may only respond to arguments raised in the corresponding opposition, patent owner preliminary response, or patent owner response.” 37 C.F.R. § 42.23(b). Accordingly, Emer- son’s failure to present evidence regarding “new claim con- struction proposals relevant to the [originally-denied grounds],” cannot be cured by the Board’s modified institu- tion decision. As the Board noted, “Petitioner did not pro- pose an express construction for any limitation in its Petition.” J.A. 606. Thus, this is not the type of case in which the evidence is allowable because it “is a legitimate reply to evidence introduced by the patent owner.” Anacor Pharm., Inc. v. Iancu, 889 F.3d 1372, 1381 (Fed. Cir. 2018). 1 1 We also note that, while the Board refused to allow Emerson to submit new evidence, it allowed the petitioner “to comment on the sufficiency of the Petition, [the Board’s] determination in the original Institution Decision, and any impact caused by the amended Institution Decision and subsequent proceedings.” J.A. 607. It then allowed the pe- titioner to submit a 10-page supplemental brief, as well as a reply to the patent owner’s response, and it afforded the parties another oral hearing on these newly instituted grounds. J.A. 607–609. Case: 19-1301 Document: 59 Page: 14 Filed: 09/30/2020 14 EMERSON ELECTRIC CO. v. SIPCO, LLC We conclude that the Board did not abuse its discretion in denying Emerson’s request to submit new evidence. C. The Board Did Not Err in its Construction of the “Low- Power Radio Frequency (RF) Signal” Limitations This court reviews the ultimate construction of a claim de novo, with subsidiary factual findings involving extrin- sic evidence reviewed for substantial evidence. Knowles Elecs. LLC v. Cirrus Logic, Inc., 883 F.3d 1358, 1361–62 (Fed. Cir. 2018). Once a patent expires, the Board must apply the claim construction standard set forth in Phillips v. AWH Corp., 415 F.3d 1303 (Fed. Cir. 2005). In re CSB- Sys. Int’l, Inc., 832 F.3d 1335, 1342 (Fed. Cir. 2016). That is, the words of a claim “are generally given their ordinary and customary meaning,” as the term would have been un- derstood by a person of ordinary skill in the art at the time of the invention. Phillips, 415 F.3d at 1312–1313. In its cross-appeal, SIPCO contends that the Board’s invalidity findings with respect to Ground 3 are erroneous because, inter alia, the Board (1) improperly construed the “low-power radio frequency (RF) signal” limitations under the “broadest reasonable interpretation” (BRI) standard; and (2) based on this standard, adopted an erroneous con- struction. Appellee Br. 25, 61. We disagree. We do not believe the Board applied the wrong standard. In construing the “low-power radio fre- quency[/RF] signal” limitations, the Board agreed with Emerson that these terms “should be given their plain and ordinary meaning.” J.A. 14. It rejected SIPCO’s proposed construction of “low power” to mean “signals having a ‘lim- ited transmission range,’” explaining that the text of the claim language says nothing of “transmission range.” J.A. 14–15. It did not do so because that construction was not the broadest reasonable one. While the Board acknowl- edged that the ’692 patent specification describes a rela- tionship between power and transmission range, the Board pointed out that “the specification does not equate these Case: 19-1301 Document: 59 Page: 15 Filed: 09/30/2020 EMERSON ELECTRIC CO. v. SIPCO, LLC 15 two distinct transmission properties.” J.A. 14. Accord- ingly, the Board concluded that, consistent with their “plain and ordinary meaning,” the disputed limitations “encompass transmitters/transceivers that transmit low power signals.” J.A. 14–15. That language and conclusion are consistent with the framework set forth in Phillips. Phillips, 415 F.3d at 1312–15 (“We have frequently stated that the words of a claim ‘are generally given their ordinary and customary meaning.”), not BRI. See also In re CSB- Sys., 832 F.3d at 1340 (“Typically, claims in issued patents are construed using the framework set forth in Phillips v. AWH Corp., which emphasizes considering the plain mean- ing of the claim terms themselves in light of the intrinsic record.”). We acknowledge that the Board’s Final Written Deci- sion contains certain inconsistencies. For example, in re- citing the legal standard for claim construction, the Board stated that “[a] claim in an unexpired patent that will not expire before a final written decision is issued shall be given its broadest reasonable construction in light of the specification of the patent in which it appears.” J.A. 10 (quoting 37 C.F.R. § 42.100(b) (2016)). The parties also do not dispute that the Board mistakenly declared that the ’692 patent claims priority to August 2, 1999, as opposed to June 22, 1998. J.A. 4; Appellant Br. 62–63; Appellee Br. 46. But the Board’s reference to the “broadest reasonable construction” does not clearly establish that it applied the wrong standard. Indeed, it was in that same paragraph that the Board explained that “we generally give claim terms their ordinary and customary meaning.” J.A. 10. Thus, despite the Board’s apparent confusion as to the ’692 patent’s priority date, the fact remains that the Board con- strued the “low-power RF signal” limitations according to their “plain and ordinary meaning.” Accordingly, we con- clude that these statements, while flawed, were harmless. Case: 19-1301 Document: 59 Page: 16 Filed: 09/30/2020 16 EMERSON ELECTRIC CO. v. SIPCO, LLC We also conclude that the Board’s claim construction of the “low power RF signal” limitation is not erroneous under the Phillips framework. First, the claim language does not support SIPCO’s narrowly proposed construction of “low-power RF signal” to have “a limited transmission range.” Appellee Br. 63. For example, independent claim 32 recites “at least one wire- less transmitter . . . configured to transmit the encoded electrical signal and transmitter identification information in a low-power radio-frequency (RF) signal.” ’692 patent, col. 21 ll. 27–32. It does not, however, mention the signal’s range, let alone disclose a “limited transmission range.” Similarly, independent claim 55 discloses “a low-power RF signal” and a plurality of low-power RF transceivers “dis- persed geographically wherein the low-power RF signal is received and repeated,” but it does not characterize the transmission range of this signal. ’692 patent, col. 23 l. 50– col. 24 l. 4. The “claim language upon which [SIPCO] relies does not mention transmission range;” rather, the claim limitations refer only to “power.” J.A. 13. Accordingly, the claims, which “define the metes and bounds of the pa- tentee’s invention,” do not suggest a restriction on the transmission range of the claimed “low-power RF signal.” Thorner v. Sony Comput. Entertainment Am. LLC, 669 F.3d 1362, 1367 (Fed. Cir. 2012) (citing Phillips, 415 F.3d at 1313). The written description also does not support SIPCO’s proposed construction. As the Board recognized, the writ- ten description describes a relationship between power and transmission range, but it “does not equate these two dis- tinct transmission properties.” J.A. 13. For example, in describing a preferred embodiment, the ’692 patent states that the control system’s transceivers “are relatively small in size and transmit a relatively low power RF signal. As a result, in some applications, the transmission range of a given transceiver may be relatively limited.” ’692 patent, col. 5 ll. 50–54 (emphasis added). The written description Case: 19-1301 Document: 59 Page: 17 Filed: 09/30/2020 EMERSON ELECTRIC CO. v. SIPCO, LLC 17 also states that, when stand-alone transceivers are dis- persed so that only one transceiver picks up a transmission from a given integrated transceiver, this is “due in part to the low power transmission nature of each transmitter.” ’692 patent, col. 6, l. 67–col. 7 l. 4 (emphasis added). But neither of these statements suggest that that low power RF signals necessarily have a limited range. That a low power RF signal may have a limited transmission range in “some applications” does not mean that it always has this charac- teristic. ’692 patent, col. 5 ll. 53–54 (emphasis added). The Board correctly recognized this distinction, concluding that limited transmission range does “not necessarily correlate with low power, but instead may depend on multiple fac- tors beyond power, such as frequency, hardware design, and environment.” J.A. 13–14. In this context, descrip- tions of embodiments comprising transceivers of a “rela- tively limited transmission range” say little about the plain and ordinary meaning of a “low-power RF signal.” See ’692 patent, col. ll. 50–57. And in any event, “it is . . . not enough that the only embodiments, or all of the embodi- ments contain a particular limitation to limit a claim term beyond its ordinary meaning.” Aventis Pharma S.A. v. Hos- pira, Inc., 675 F.3d 1324, 1330 (Fed. Cir. 2012). See also Innova/Pure Water, Inc. v. Safar Water Filtration Sys., Inc., 381 F.3d 1111, 1117 (Fed. Cir. 2004) (“[E]ven where a patent describes only a single embodiment, claims will not be read restrictively unless the patentee has demonstrated a clear intention to limit the claim scope.” (internal quota- tion omitted)). SIPCO also argues that the Board’s construction is er- roneous because it is inconsistent with this court’s claim construction in SIPCO, LLC v. Emerson Electric Co., 939 F.3d 1301 (Fed. Cir. 2019), which involved similar subject matter, but a different patent—U.S. Patent No. 8,908,842 (the “’842 patent”). Appellee Br. 54. In that case, we con- strued the term “low-power” in “low-power transceiver” to correlate with “limited transmission range.” See SIPCO, Case: 19-1301 Document: 59 Page: 18 Filed: 09/30/2020 18 EMERSON ELECTRIC CO. v. SIPCO, LLC 939 F.3d at 1308. Pointing to our prior holding, SIPCO ar- gues that the “low-power RF signal” limitations in the ’692 patent must correlate with a “limited transmission range.” Id. From the outset, we are not bound by our prior con- struction because that decision has been vacated on other grounds. See Emerson Elec. Co. v. SIPCO, LLC, 207 L.Ed. 2d 1049 (U.S. June 15, 2020). But even if that decision had not been vacated, it offers little support for SIPCO’s posi- tion with respect to the ’692 patent. As we have frequently explained, claim construction issues presented in patent cases are highly fact and case-specific because they rely on the intrinsic evidence: the claim language, the written de- scription, and the prosecution history. Phillips, 415 F.3d at 1312–1317. Accordingly, the construction of a particular term in one patent will not necessarily bear on the inter- pretation of the same term in a subsequent patent because the factual context is different. The term may be identical, but the intrinsic evidence is not. See also Phillips, 415 F.3d at 1319 (“In sum, extrinsic evidence may be useful to the court, but it is unlikely to result in a reliable interpretation of patent claim scope unless considered in the context of the intrinsic evidence.”). Accordingly, in a case such as the one before us—where the two patents are unrelated and do not share any intrinsic evidence—our prior holding in SIPCO is neither controlling nor afforded substantial weight. Even if we were to consider our prior construction of “low power” in the prior proceeding, moreover, the infer- ences we drew in that earlier proceeding cannot be imputed to the current appeal. The written descriptions of the ’842 patent and the ’692 patent differ, and the ’692 patent does not contain the disclosures that we relied on to construe the claims of the ’842 patent. In SIPCO, we construed “low- power transceiver” to mean “a device that transmits and receives signals at a power level corresponding to limited transmission range” because the ’842 patent “repeatedly Case: 19-1301 Document: 59 Page: 19 Filed: 09/30/2020 EMERSON ELECTRIC CO. v. SIPCO, LLC 19 ties” the device to this characteristic. Id. For example, the ’842 patent written description states that, in the context of “an extremely low power transmitter,” the user “will have to be in close proximity, (e.g., several feet) to the re- ceiver,” ’842 patent, col. 5, l. 67–col. 6 l. 3, and that the invention’s “extremely low-power operation also helps to prevent the unlawful interception of the electromagnetic signals.” Id., col. 6 ll. 4–11. The patent also states that “it may be desirable to use a cellular transmitter, instead of a low-power RF transmitter . . . because the automobile may break down a relatively significant distance from the near- est pay-type telephone (e.g., location of the nearest trans- ceiver).” Id., col. 14 ll. 15–21. We determined that these repeated references to “distance” were significant, and that these disclosures supported our conclusion that a low- power transmitter, as opposed to a cellular transmitter, has a limited transmission range. SIPCO, 939 F.3d at 1308–09. The ’692 patent written description does not contain any similar language. It does not state that low-power RF signals have “limited transmission range,” or include any of the proximity language that was significant to our deter- mination in the prior appeal. In describing a preferred em- bodiment, the specification acknowledges that “in some applications, the transmission range of a given transceiver may be relatively limited,” ’692 patent, col. 5 ll. 53–54, but it also states that in other instances, the low-power RF sig- nal may be sufficient. Id., col. 7 ll. 5–6 (“However, in cer- tain instances two, or even more, stand-alone transceivers may pick up a single transmission.”). Without more, we see no reason to depart from the plain and ordinary meaning of the term. Phillips, 415 F.3d at 1312. Accordingly, we determine that the intrinsic evidence does not limit the term such that the “low-power RF signal” limitations should be construed to have a “limited transmission range.” We conclude that the Board’s construction of the “low-power RF signal” limitations in accordance with their Case: 19-1301 Document: 59 Page: 20 Filed: 09/30/2020 20 EMERSON ELECTRIC CO. v. SIPCO, LLC plain and ordinary meaning, “to encompass transmit- ters/transceivers that transmit low power signals,” is cor- rect. D. Substantial Evidence Supports the Board’s Factual Findings that Cunningham Discloses the “Low-Power RF Signal” and “Encoded Electrical Signal” Limitations of the Ground 3 Claims In light of our claim construction determination above, we conclude that substantial evidence supports the Board’s factual findings that Cunningham discloses the “low-power RF signal” limitation because: (1) Cunningham discloses wireless transmitters; (2) the wireless transmitters can be configured to transmit a “low-power RF signal” according to the correct claim; and (3) the wireless transmitters can alternatively be configured to transmit a low-power trans- mission over a limited range according to SIPCO’s pro- posed construction. J.A. 35–36. Cunningham discloses a sensor interface module (“SIM”) that “communicate[s] with data collection modules 110 through a hardwire or wireless transmission 108.” J.A. 1047 col. 6, ll. 11–13. The Federal Communications Com- mission (“FCC”) Bulletin, which SIPCO relies upon, defines a “low power transmitter” as one which complies with the FCC regulations. J.A. 2486. Cunningham identifies that “the preferred embodiment communicates by using a fre- quency-hopping spread-spectrum transmission in an unli- censed range, such as 902–928 MHz.” J.A. 1047 col. 6, ll. 16–18. The FCC regulations state, that for a transmitter in this frequency range, the maximum power output for a “low-power transmitter” is 1 Watt. J.A. 2502. Cunning- ham discloses the transmission power for the SIM is 100 mW, significantly below the FCC maximum. J.A. 1053 col. 18, ll. 56–62. Cunningham also appreciates that the SIM could operate with a transceiver that is both low-power and limited range. J.A. 1047 col. 6, ll. 13–16 (“various types of Case: 19-1301 Document: 59 Page: 21 Filed: 09/30/2020 EMERSON ELECTRIC CO. v. SIPCO, LLC 21 known, low-power, radio-frequency transmissions may be utilized”). We also conclude that substantial evidence supports the Board’s findings that Cunningham discloses a gateway that delivers an “encoded electrical signal” and transmitter identification information to a computer on the WAN (the “encoded electrical signal” limitation). J.A. 35–36. As the Board noted, Cunningham’s data collection module (“DCM”): (1) receives an encoded cumulative sensor read- ing; and (2) sends the reading and transmitter identifica- tion information identifying the SIM to the host computer, J.A. 1048, col. 7, ll. 19–21 (“The data collection modules 110 transmit the information received from the sensor inter- face modules 102 over a data module connection 116 to a network system 118.”); J.A. 1060, col. 31, ll. 6–8 (“Infor- mation from the sensor interface module 102 is decoded and processed in the data collection module 110 and pre- pared for transmission to the host module 122”). Cunning- ham also discloses that this transmission is in the form of an internet protocol signal. J.A. 1067, col. 45, ll. 60–67 (“The data collection module will send and receiv[e] infor- mation to and from the host module as an Internet protocol (TCP/IP) signal.”). J.A. 36. Because the Board’s factual findings with respect to the “low-power RF signal” and “encoded electrical signal” limi- tations are supported by substantial evidence, we agree that the Ground 3 claims are unpatentable because they would have been obvious as a matter of law. III. CONCLUSION For the foregoing reasons, we affirm the Board’s deter- minations. AFFIRMED COSTS No costs.