Salazar v. AT&T Mobility LLC, No. 21-2320 (Fed. Cir. 2023)
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Salazar’s patent describes technology for wireless and wired communications, including command, control, and sensing for two-way communication of sound, voice, and data “with any appliance and/or apparatus capable of transmitting and/or receiving compatible sound, voice, and data signals.” ’The patent expired in 2015. In a subsequent suit, a jury found HTC did not infringe the patent but did not decide whether the patent was valid. Salazar later sued AT&T, asserting the patent against the same products he previously challenged. HTC intervened.
At claim construction, the court held that the claims require one microprocessor that is capable of performing the "recited ‘generating,’ ‘creating,’ ‘retrieving,’ and ‘generating’ functions,” explaining that the claim term provided certain functions that the “said microprocessor” must be “necessarily configured to perform as well as the structural relationship between ‘said microprocessor’ and other structural elements.” The court denied AT&T’s motion for summary judgment, based on claim preclusion and Supreme Court precedent, which prevents harassment of customers of an adjudged noninfringer. The jury found that the accused products did not infringe and that the patent was not invalid. The Federal Circuit affirmed the judgment of noninfringement, agreeing with the claim construction, did not reach AT&T’s preclusion arguments, and held that AT&T waived its challenge concerning anticipation.
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Case: 21-2320 Document: 48 Page: 1 Filed: 04/05/2023 United States Court of Appeals for the Federal Circuit ______________________ JOE A. SALAZAR, Plaintiff-Appellant v. AT&T MOBILITY LLC, SPRINT UNITED MANAGEMENT COMPANY, T-MOBILE USA, INC., CELLCO PARTNERSHIP INC., DBA VERIZON WIRELESS, INC., Defendants-Cross-Appellants HTC CORPORATION, HTC AMERICA, INC., Defendants ______________________ 2021-2320, 2021-2376 ______________________ Appeals from the United States District Court for the Eastern District of Texas in No. 2:20-cv-00004-JRG, Chief Judge J. Rodney Gilstrap. ______________________ Decided: April 5, 2023 ______________________ DARIUSH KEYHANI, Keyhani LLC, Washington, DC, argued for plaintiff-appellant. TODD ERIC LANDIS, Williams Simons & Landis PLLC, Dallas, TX, argued for defendants-cross-appellants. Also Case: 21-2320 Document: 48 2 Page: 2 SALAZAR Filed: 04/05/2023 v. AT&T MOBILITY LLC represented by FRED WILLIAMS, Austin, TX; JOHN WITTENPhiladelphia, PA. ______________________ ZELLNER, Before STOLL, SCHALL, and STARK, Circuit Judges. STOLL, Circuit Judge. Joe Salazar appeals the United States District Court for the Eastern District of Texas’s judgment of noninfringement, challenging the court’s claim construction. Mr. Salazar contends that the court erroneously construed “a microprocessor” to mean one microprocessor, contrary to this court’s precedent. AT&T Mobility LLC, Sprint United Management Company, T-Mobile USA, Inc., and Cellco Partnership Inc., dba Verizon Wireless, Inc. (collectively, “AT&T”) cross-appeal the district court’s ruling that Mr. Salazar’s claims were not precluded based on prior litigation and challenge the judgment that the asserted claims are not invalid as anticipated. Because we agree with the district court’s claim construction, we affirm the judgment of noninfringement. Having affirmed the judgment of noninfringement, we do not reach AT&T’s preclusion arguments. Finally, we hold that AT&T waived its challenge to the jury’s verdict on anticipation by failing to move for judgment as a matter of law under Rule 50 of the Federal Rules of Civil Procedure. BACKGROUND Mr. Salazar owns U.S. Patent No. 5,802,467. The ’467 patent describes technology for wireless and wired communications, including command, control, and sensing for two-way communication of sound, voice, and data “with any appliance and/or apparatus capable of transmitting and/or receiving compatible sound, voice and data signals.” ’467 patent col. 1 ll. 8–13. The ’467 patent expired on September 28, 2015. Case: 21-2320 SALAZAR Document: 48 Page: 3 Filed: 04/05/2023 v. AT&T MOBILITY LLC 3 Independent claim 1, one of several claims that contain the terms at issue, recites: 1. A communications, command, control and sensing system for communicating with a plurality of external devices comprising: a microprocessor for generating a plurality of control signals used to operate said system, said microprocessor creating a plurality of reprogrammable communication protocols, for transmission to said external devices wherein each communication protocol includes a command code set that defines the signals that are employed to communicate with each one of said external devices; a memory device coupled to said microprocessor configured to store a plurality of parameter sets retrieved by said microprocessor so as to recreate a desired command code set, such that the memory space required to store said parameters is smaller than the memory space required to store said command code sets; a user interface coupled to said microprocessor for sending a plurality of signals corresponding to user selections to said microprocessor and displaying a plurality of menu selections available for the user’s choice, said microprocessor generating a communication protocol in response to said user selections; and an infra-red frequency transceiver coupled to said microprocessor for transmitting to said external devices and receiving from said external devices, infra-red frequency signals in accordance with said communications protocols. Id. at col. 25 l. 57–col. 26 l. 17 (emphasis added). Case: 21-2320 4 Document: 48 Page: 4 SALAZAR Filed: 04/05/2023 v. AT&T MOBILITY LLC In 2016, Mr. Salazar sued HTC Corp., alleging HTC Corp. infringed the ’467 patent by selling certain HTC One phones that allegedly embodied the asserted claims. See Compl., Salazar v. HTC Corp., No. 2:16-cv-01096, 2016 WL 11577368 (E.D. Tex. Oct. 5, 2016) (“Salazar I”). HTC Corp. raised two defenses: (1) that it did not commit any infringing acts in the United States; and (2) in any event, the accused phones did not infringe. See Salazar I Trial Tr. 21:21–22:2. A jury ultimately returned a verdict finding HTC Corp. did not infringe the ’467 patent. The jury did not decide whether the ’467 patent was valid, however, instead leaving that portion of the verdict form blank. J.A. 2201. In 2019, Mr. Salazar sued AT&T, again asserting the ’467 patent against the same products he challenged in Salazar I. HTC Corp. and HTC America, Inc. (collectively “HTC”) intervened, requesting a declaratory judgment that the accused products did not infringe. The district court severed HTC’s claims and stayed that portion of the case. At claim construction, the parties disputed limitations present in multiple asserted claims, which required: “a microprocessor for generating . . . , said microprocessor creating . . . , a plurality of parameter sets retrieved by said microprocessor . . . , [and] said microprocessor generating . . . .” The district court characterized the dispute between the parties as coming down to “whether the claims require one microprocessor that is capable of performing the recited ‘generating,’ ‘creating,’ ‘retrieving,’ and ‘generating’ functions.” Salazar v. AT&T Mobility LLC, No. 2:20cv-00004, 2020 WL 5608640, at *17 (E.D. Tex. Sept. 18, 2020) (Claim Construction Op.). The district court answered this question in the affirmative and construed the term to mean “one or more microprocessors, at least one of which is configured to perform the generating, creating, retrieving, and generating functions.” Id. at *19. Relying in part on our decisions in Convolve, Inc. v. Compaq Computer Corp., 812 F.3d 1313 (Fed. Cir. 2016), and In re Varma, 816 Case: 21-2320 SALAZAR Document: 48 Page: 5 v. AT&T MOBILITY LLC Filed: 04/05/2023 5 F.3d 1352 (Fed. Cir. 2016), the district court explained that the claim term provided certain functions that the “said microprocessor” must be “necessarily configured to perform as well as the structural relationship between ‘said microprocessor’ and other structural elements.” Claim Construction Op., 2020 WL 5608640, at *19. Thus, the district court reasoned, “at least one microprocessor must satisfy all the functional (and relational) limitations recited for ‘said microprocessor.’” Id. at *18. Prior to trial, AT&T moved for summary judgment, arguing that Mr. Salazar’s claims were barred under claim preclusion and the Supreme Court’s decision in Kessler v. Eldred, 206 U.S. 285 (1907), which prevents harassment of customers of an adjudged noninfringer in specific circumstances. The district court denied that motion. At trial, AT&T’s technical expert opined that the asserted claims were anticipated by Goldstein, a prior art reference that was not considered by the U.S. Patent Office during prosecution. J.A. 1256–92 (Trial Tr. 91:18–127:7). At the conclusion of trial, AT&T moved for judgment as a matter of law under Federal Rule of Civil Procedure 50 regarding “infringement, damages, and preclusion,” but not regarding invalidity. J.A. 1572 (Trial Tr. 198:16–19). The district court confirmed with AT&T’s counsel that it was not moving for judgment as a matter of law regarding anticipation. Id. (Trial Tr. 198:20–22). The jury thereafter returned its verdict, finding that the accused products did not infringe the ’467 patent and that the patent was not invalid. J.A. 397–98. The district court entered final judgment reflecting the jury’s verdict. Mr. Salazar and AT&T both appeal. We have jurisdiction under 28 U.S.C. § 1295(a)(1). DISCUSSION We start by addressing Mr. Salazar’s challenge to the district court’s claim construction. We then turn to AT&T’s Case: 21-2320 Document: 48 6 Page: 6 SALAZAR Filed: 04/05/2023 v. AT&T MOBILITY LLC cross-appeal, in which it argues that the district court erred both by (1) denying AT&T’s motion for summary judgment that Mr. Salazar’s claims were barred by collateral estoppel and the Kessler doctrine and (2) finding that claims 1–7, 27–30, and 34 were not anticipated. I On appeal, Mr. Salazar argues that he is entitled to a new jury trial because the court erred in construing “a” microprocessor and “said” microprocessor. Appellant’s Br. 39. According to Mr. Salazar, the court should have interpreted the claim terms to require one or more microprocessors, any one of which may be capable of performing each of the “generating,” “creating,” and “retrieving” functions recited in the claims. Id. at 11–12, 32–33. Put another way, in Mr. Salazar’s view, a correct claim construction would encompass one microprocessor capable of performing one claimed function and another microprocessor capable of performing a different claimed function, even if no one microprocessor could perform all of the recited functions. Mr. Salazar maintains that the district court erred by interpreting “a” microprocessor as a single microprocessor that is capable of performing all of the later recited “generating,” “creating,” and “retrieving” functions. Id. at 31. We review a district court’s claim construction de novo where, as here, it is decided only on the intrinsic evidence. Teva Pharms. USA, Inc. v. Sandoz, Inc., 574 U.S. 318, 331 (2015). We begin, as we must, with the claim language itself. Immunex Corp. v. Sanofi-Aventis U.S. LLC, 977 F.3d 1212, 1218 (Fed. Cir. 2020). The words of a claim are generally given their ordinary meaning, which is “the meaning that the term would have to a person of ordinary skill in the art in question at the time of the invention.” Phillips v. AWH Corp., 415 F.3d 1303, 1312–13 (Fed. Cir. 2005) (en banc). Case: 21-2320 SALAZAR Document: 48 Page: 7 Filed: 04/05/2023 v. AT&T MOBILITY LLC 7 At issue in this appeal is the proper construction of the articles “a” and “said.” We have explained that the indefinite article “a” means “‘one or more’ in open-ended claims containing the transitional phrase ‘comprising.’” Convolve, 812 F.3d at 1321 (quoting KCJ Corp. v. Kinetic Concepts, Inc., 223 F.3d 1351, 1356 (Fed. Cir. 2000)). “An exception to the general rule that ‘a’ . . . means more than one only arises where the language of the claims themselves, the specification, or the prosecution history necessitate a departure from the rule.” Baldwin Graphic Sys., Inc. v. Siebert, Inc., 512 F.3d 1338, 1342–43 (Fed. Cir. 2008). We have also explained that “[t]he use of the term ‘said’ indicates that this portion of the claim limitation is a reference back to the previously claimed” term. Summit 6, LLC v. Samsung Elecs. Co., 802 F.3d 1283, 1291 (Fed. Cir. 2015); see Baldwin, 512 F.3d at 1343 (the claim term “said” is an “anaphoric phrase[], referring to the initial antecedent phrase”). “The subsequent use of [the] definite article[] . . . ‘said’ in a claim to refer back to the same claim term does not change the general plural rule, but simply reinvokes that non-singular meaning.” Baldwin, 512 F.3d at 1342. In Baldwin, for example, we considered a patent describing systems for cleaning the cylinder of a printing press using cleaning fabric. 1 Id. at 1340. There, the claim 1 part: The claim at issue in Baldwin recited in relevant A pre-packaged, pre-soaked cleaning system for use to clean the cylinder of printing machines comprising in combination: (1) a pre-soaked fabric roll saturated to equilibrium with cleaning solvent disposed around a core, said fabric roll having a sealed sleeve which can be Case: 21-2320 8 Document: 48 Page: 8 SALAZAR Filed: 04/05/2023 v. AT&T MOBILITY LLC recited “a pre-soaked fabric roll” and subsequently recited “said fabric roll.” Id. We held that “a pre-soaked fabric roll” meant “one or more” pre-soaked fabric rolls, and that the subsequent “said fabric roll” maintained that non-singular meaning. Id. at 1342–43. But we did not hold in Baldwin that using an indefinite article somehow displaces the antecedent basis rule, as to require “said fabric roll” to refer to something other than the same earlier referenced “pre-soaked fabric roll.” See id. at 1343 (stating that the Manual of Patent Examining Procedure “describes the need, in most cases, for claim terms to have proper antecedent bases”). In other words, in Baldwin, the “said fabric roll” was the same “one or more” pre-soaked fabric rolls that were referred to earlier in the claim. We considered a similar claim construction dispute in Harari v. Lee, 656 F.3d 1331 (Fed. Cir. 2011), a case involving rewritable memory chips. There, the parties disputed the terms “a bit line” and “said bit line.” 2 The relevant opened or removed from said fabric roll for use of said fabric roll, . . . and said system including (2) means for locating said fabric roll adjacent to and operatively associated with a cylinder to be cleaned. 512 F.3d at 1340 (emphasis added). 2 The claim at issue in Harari recited in relevant part: A method of treating at least one erased EEprom cell, comprising: [(1)] accessing a number of control gates and accessing a bit line, thereby activating a number of memory cells, . . . ; [and] Case: 21-2320 SALAZAR Document: 48 Page: 9 Filed: 04/05/2023 v. AT&T MOBILITY LLC 9 claim recited a method comprising accessing a number of control gates and “a bit line” to activate a number of cells. Id. at 1341. Noting that “Baldwin . . . does not set a hard and fast rule that ‘a’ always means one or more than one,” we determined that “[t]he plain language of the claim clearly indicates that only a single bit line is used when accessing a number of cells.” Id. We thus concluded that “the correct and only reasonable construction of the claim terms ‘a bit line’ and ‘said bit line’ . . . requires that a single bit line activates multiple memory cells.” Id. at 1342. Stated otherwise, “said bit line” later in the claim must be the same, singular bit line as “a bit line” earlier in the claim. We followed similar reasoning in Convolve, which involved a claim element introduced with the indefinite article “a” and further defined by certain recited characteristics. 812 F.3d at 1321. Specifically, we interpreted “[u]ser interface for . . . working with a processor . . . comprising” in claims 1, 3, and 5 to require “a single processor” having all of the subsequently recited characteristics. Id. (emphasis added). In reaching this conclusion, we considered the subsequent references to the initial processor: Specifically, claim 1 recites “a processor” in the preamble before recitation of “comprising,” and the claim body uses the definite article “the” to refer to the “processor.” This reference to “the processor,” referring back to the “a processor” recited in [the] preamble, supports a conclusion that the recited user interface is “operatively working with” the [(2)] subsequent to accessing said bit line, sensing the presence of at least one activated cell from said number of memory cells . . . Harari, 626 F.3d at 1340 (emphasis added). Case: 21-2320 10 Document: 48 Page: 10 SALAZAR Filed: 04/05/2023 v. AT&T MOBILITY LLC same processor to perform all of the recited steps. In other words, the claim language requires a processor associated with the user interface to issue the shaped commands of the claims. Given this claim language, which contrasts with the claims described above that allow for multiple processors, we conclude that claims 1, 3, and 5 require the user interface to work with a single processor in performing all of the claim steps. Id. at 1321. Claim 9, however, had no subsequent reference to “the” or “said” processor. Because that claim did not reference a single processor, we interpreted “a processor” to mean “one or more processors” in the context of that claim. See id. Finally, in Varma, we considered claims directed to performing statistical analyses of investment data. 816 F.3d at 1355. There, the disputed claim limitation was “a statistical analysis request corresponding to two or more selected investments.” Id. at 1362. The Patent Trial and Appeal Board held that the limitation could be satisfied even if two statistical analysis requests were required to analyze the “two or more selected investments.” Id. We reversed the Board’s decision, explaining that: [T]he question is not whether there can be more than one request in a claim-covered system: there can. Rather, the question is whether “a” can serve to negate what is required by the language following “a”: a “request” (a singular term) that “correspond[s]” to “two or more selected investments.” It cannot. For a dog owner to have “a dog that rolls over and fetches sticks,” it does not suffice that he have two dogs, each able to perform just one of the tasks. In the present case, no matter how many requests there may be, no matter the variety of the requests the system may receive, the system must Case: 21-2320 SALAZAR Document: 48 Page: 11 Filed: 04/05/2023 v. AT&T MOBILITY LLC 11 be adapted to receive a request that itself corresponds to at least two investments. Id. at 1362–63. Varma thus dealt with claim language that introduces a claim element using an indefinite article and further defines the element with subsequently recited functionality. While this structure may allow for more than a single instance of the claim element, it may nonetheless require that a single instance of the element be capable of performing all the recited functionality. With this precedent in mind, we agree that the district court correctly construed the claim term Mr. Salazar challenges on appeal. Specifically, the district court properly interpreted “a microprocessor for generating . . . , said microprocessor creating . . . , a plurality of parameter sets retrieved by said microprocessor . . . , said microprocessor generating . . .” to mean “one or more microprocessors, at least one of which is configured to perform the generating, creating, retrieving, and generating functions.” Claim Construction Op., 2020 WL 5608640, at *19. We agree with the district court that while the claim term “a microprocessor” does not require there be only one microprocessor, the subsequent limitations referring back to “said microprocessor” require that at least one microprocessor be capable of performing each of the claimed functions. This approach is entirely consistent with our precedent. Like the claim language in Convolve and Varma, the claim language here requires a singular element—“a microprocessor”—to be capable of performing all of the recited functionality. See Convolve, 812 F.3d at 1321 (requiring “a processor” and “the processor” in claims 1, 3, and 5 to “perform all of the recited steps”); Varma, 816 F.3d at 1362–63 (finding “a statistical analysis request corresponding to two or more selected investments” requires a single request to correspond to at least two investments where the subsequent language “makes it unmistakable that at least two Case: 21-2320 Document: 48 12 Page: 12 SALAZAR Filed: 04/05/2023 v. AT&T MOBILITY LLC investments must be the subject of each statistical analysis”). This conclusion is bolstered when we consider Convolve’s claim 9, which had no subsequent reference to “the” or “said” processor, and thus did not require a single processor. 812 F.3d at 1321. Here, the claim language “a microprocessor,” read in the context of the full claim, aligns more closely with Convolve’s claims 1, 3, and 5—which required “a processor” and “the processor” to perform the recited functionality—and, like those claims, should be construed to require at least one microprocessor capable of performing the recited functions. Mr. Salazar would have us read the phrase “one or more” in the district court’s claim construction to mean “any one of the one or more” when referring to the laterrecited functions. Appellant’s Br. 35. We decline to do so. Although Mr. Salazar insists that the phrase “said microprocessor” “simply reinvokes th[e] non-singular meaning,” Id. at 22 (quoting Baldwin, 512 F.3d at 1342), the claim’s use of “said” does not negate what is required by the language that follows “said”: a “microprocessor” that “generat[es],” “creat[es],” and “retriev[es].” As we stated in Varma, “[f]or a dog owner to have ‘a dog that rolls over and fetches sticks,’ it does not suffice that he have two dogs, each able to perform just one of the tasks.” 816 F.3d at 1363. Here, it does not suffice to have multiple microprocessors, each able to perform just one of the recited functions; the claim language requires at least one microprocessor capable of performing each of the recited functions. Because we agree with the district court’s claim construction, we affirm its judgment of noninfringement. II We now turn to AT&T’s cross-appeal challenging (1) the district court’s ruling that Mr. Salazar’s claims were not barred by claim preclusion or the Kessler doctrine; and Case: 21-2320 SALAZAR Document: 48 v. AT&T MOBILITY LLC Page: 13 Filed: 04/05/2023 13 (2) the district court’s finding that the asserted claims were not invalid as anticipated. At oral argument, AT&T agreed that we need not reach its preclusion arguments if we affirm the district court’s judgment of noninfringement. See Oral Arg. at 9:46–10:10, https://oralarguments.cafc.uscourts.gov/default.aspx?fl=21 -2320_11072022.mp3. As explained above, we affirm the district court’s judgment and, accordingly, do not address this issue. Finally, we turn to AT&T’s anticipation argument. The jury found that the asserted claims were not anticipated, and the district court subsequently entered judgment consistent with that finding. On appeal, AT&T argues that “[i]t was reversible error for the district court to hold that asserted claims 1–7, 27–30, and 34[] are not anticipated” because AT&T “presented substantial, clear and convincing evidence” that the asserted claims are anticipated. Cross-Appellants’ Br. 49–50. But AT&T failed to move for judgment as a matter of law under Federal Rule of Civil Procedure 50. Its failure to do so dooms this argument. A party must make proper motions under Rule 50 in order to appeal an adverse verdict on grounds relating to the sufficiency of the evidence. See Retractable Techs., Inc. v. Becton, Dickinson & Co., 653 F.3d 1296, 1308 (Fed. Cir. 2011) (“Rule 50(a)(2) requires the moving party” to make its motion for judgment as a matter of law “to preserve the issue.”); Feld Motor Sports, Inc. v. Traxxas, L.P., 861 F.3d 591, 596 (5th Cir. 2017) (“[T]his court has jurisdiction to hear an appeal of the district court’s legal conclusions . . . , but only if it is sufficiently preserved in a Rule 50 motion.”). Here, AT&T did not move under Rule 50 regarding any validity ground, including anticipation. As a result, it never challenged the sufficiency of the evidence with respect to anticipation before the district court, and it has therefore waived its anticipation challenge on appeal. Case: 21-2320 Document: 48 14 Page: 14 SALAZAR Filed: 04/05/2023 v. AT&T MOBILITY LLC Hoping to correct its error, AT&T requests we “liberally constru[e]” Rule 50(a) to require parties to move under that Rule only if “‘the court [or opposing] attorneys needed any more enlightenment about [the appellant’s] position on those issues.’” Cross-Appellants’ Reply Br. 19–20 (quoting Blackboard, Inc. v. Desire2Learn, Inc., 574 F.3d 1371, 1380 (Fed. Cir. 2009)). But AT&T’s reliance on Blackboard is misplaced. In Blackboard, the defendant made “cursory” Rule 50(a) motions regarding anticipation and obviousness, and the district court acknowledged those motions. 574 F.3d at 1379. We held that “in light of the Fifth Circuit’s practice of liberally construing the rule,” the cursory motions and “the district judge’s prompt statement that he would take both motions under advisement, made clear that no more was necessary to serve the purposes of Rule 50(a).” Id. at 1379–80. That was not the case here. In contrast to the defendant in Blackboard, AT&T explicitly expressed to the district court that it would not move under Rule 50(a) regarding anticipation: THE COURT: Let me hear from Defendants. What matters do Defendants seek relief on under Rule 50(a)? [COUNSEL FOR AT&T]: Your Honor, we intend to seek relief on issues of infringement, damages, and preclusion. THE COURT: Not Rule 102? on anticipation under [COUNSEL FOR AT&T]: We are not moving under Rule 50(a) for anticipation. J.A. 1572 (Trial Tr. 198:16–22). In other words, AT&T clearly disavowed any intention to move for judgment as a matter of law regarding anticipation. Accordingly, even under the most liberal construction of the requirements of Case: 21-2320 SALAZAR Document: 48 Page: 15 v. AT&T MOBILITY LLC Filed: 04/05/2023 15 Rule 50(a), AT&T has nevertheless waived its anticipation argument. CONCLUSION We have considered the parties’ remaining arguments and find them unpersuasive. For the foregoing reasons, we affirm the judgment of noninfringement. AFFIRMED COSTS No costs.
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