- Google LLC v. Escapex IP LLCAll claims unpatentablePTAB · Mar 30, 2026 · IPR2025-00337 · APJ Justin T Arbes · IPR · Final written decision
Claims 1–24 are unpatentable under § 103: claims 1–3, 5–6, 13–15, 17–18 over Fuloria and Andler; the remaining claims over combinations adding WO ’100, Bartholomew, Kirk, or Cheung.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedDecided for petitioner
“a person of ordinary skill in the art would have had “a bachelor’s degree in computer science or a similar field and three years of professional computer programming experience, including experience with networked media and databases, where additional education can substitute for experience or vice versa.” Pet. 20 (citing Ex. 1002 ¶¶ 27–31). In the Decision on Institution, Inst. 7–8. Patent Owner adopts Petitioner’s proposed definition “because it comports with the technology and claims of the ’687 [p]atent as well as the asserted prior art.” PO Resp. 4; Tr. 36:4–18. Based on the full record developed during trial, including our review of the ’687 patent and the types of problems and solutions described in the ’687 patent and cited prior art, we maintain the previously adopted definition of the level of ordinary skill in the art and apply it for purposes of this Decision.” slip op. at 9
- Claim Construction › Intrinsic evidence (Phillips canons) › Lexicography (patentee as own lexicographer)Term construed petitioner constructionDecided for petitioner
“37 C.F.R. § 42.100(b). Petitioner argues that the term “engagement” in independent claims 1, 11–13, 23, and 24 is defined in the Specification of the ’687 patent and should be interpreted to mean “an indication that a user should be distinguished with respect to the content over another user.” Pet. 11 (citing Ex. 1001, col. 5, ll. 53–55; Ex. 1002 ¶ 41). Patent Owner agrees that the Specification “defines” the term in that manner. PO Resp. 13. The Board did not interpret any terms in the Decision on Institution. Dec. on Inst. 9. We agree with the parties’ proposed interpretation of “engagement” and apply it for purposes of this Decision, based on the Specification’s disclosure that “[a] user engagement with content refers to an indication that a user should be distinguished with” slip op. at 10
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“No other terms require express interpretation to determine whether Petitioner has met its burden to prove unpatentability of the challenged claims. See Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017) (“Because we need only construe terms ‘that are in controversy, and only to the extent necessary to resolve the controversy,’ we need not construe [a particular claim limitation] where the construction is not ‘material to the . . . dispute.’” (emphasis added) (citation omitted)).” slip op. at 11
- Expert testimonyPetitioner expert creditedDecided for petitioner
Patent outcomesUS 10,474,687 unpatentableClaim construction§ 103 obviousnesscites KSR · GrahamPatents in suitUS 10,474,687 - Reolink Innovation Inc. / Shenzhen Reolink Technology Co., Ltd. v. Throughtek Co., Ltd.All claims unpatentablePTAB · Jan 23, 2026 · IPR2024-01192 · APJ Michael J Strauss · IPR · Final written decision
Claims 1–10 and 16 are unpatentable as obvious over the asserted combinations of the Lorex Manual or Lorex Video with the identified references.
RulingsFinal written decision- Novelty / Anticipation (§102) › Priority / effective filing date / continuation supportPriority date awardedDecided for petitioner
“Patent Owner does not dispute any of Petitioner’s contentions as to the effective filing date, stating in agreement with Petitioner’s asserted Effective Filing Date of the Challenged Claims that “[t]he ’916 Patent claims a priority of a provisional application 61/924,240 filed on January 7, 2014.” PO Resp. 8. Given that the parties are in agreement on the January 7, 2014, effective filing date, we similarly use January 7, 2014, as the effective filing date of the challenged claims for purposes of this Decision.” slip op. at 4
- Skill levelSkill level petitioner adoptedDecided for petitioner
“II. ANALYSIS A. Level of Ordinary Skill in the Art Relying on the testimony of Vlad Kardashov, Petitioner proposes that a person of ordinary skill in the art at the time of the invention of the ’916 patent “would have had a bachelor’s degree in electrical engineering and two 7 US 2012/0198040 A1, published August 2, 2012 (Ex. 1011, “Kuo”). 8 The subject ’916 patent claims priority to Kuo as a continuation-in-part of that earlier filed application. Ex. 1001, code (63). 9 Lorex Technology Inc., “How to set up remote access for DVR using - Lorex Stratus Connectivity” (June 18, 2013), available at https://www. youtube.com/watch?v=fMPRi9WFuTM (Ex. 1012, the “Lorex Video”). 10 US 2012/0113265 A1, published May 10, 2012 (Ex. 1013, “Galvin”). years of work experience with network and communication technologies.” Pet. 8 (citing Ex. 1003 ¶¶ 12–14). Patent Owner does not contest Petitioner’s proposal or provide a proposal of its own. On the complete record, we adopt Petitioner’s description of the level of ordinary skill in the art, as it is consistent with the technology described in the ’916 patent and the asserted prior art. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001).” slip op. at 8
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“Petitioner asserts that “no claim elements need a formal construction for purposes of resolving controversies in this proceeding.” Pet. 9 (citing Ex. 1003 ¶¶ 43–44; Wellman, Inc. v. Eastman Chem. Co., 642 F.3d 1355, 1361 (Fed. Cir. 2011), Google Inc. v. Intellectual Ventures II LLC, 701 Fed. Appx. 946, 956 (Fed. Cir. 2017)). Petitioner states “[a]ll claim terms should be construed according to the Phillips standard.” Id. (citing Phillips, 415 F.3d at 1303; 37 C.F.R. § 42.100). Patent Owner presents no proposed claim constructions. We determine that we need not expressly construe any claim terms to resolve the parties’ disputes on the current record. See Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017) (“[W]e need only construe terms ‘that are in controversy, and only to the extent necessary to resolve the controversy.’”) (quoting Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999)).” slip op. at 9
- Novelty / Anticipation (§102) › Prior-art status of a reference › Printed publication / public accessibilityReference is prior artPriority date awardedDecided for petitioner
“that Patent Owner fails to demonstrate that the Lorex Manual was based on a disclosure made by the inventor or joint inventor or by another who obtained the subject matter disclosed directly or indirectly from the inventor or a joint inventor. The Lorex Manual is relied on under Ground 1A, exclusively or in the alternative to or in combination with Kim, for all claim elements. Pet. 9– 31. Patent Owner fails to demonstrate that this subject matter was disclosed to Lorex by ThroughTek, much less by one of the inventors of the ’916 Patent.” slip op. at 22
Patent outcomesUS 9,774,916 unpatentableClaim construction§ 102 anticipation§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 9,774,916 - Juniper Networks, Inc. v. Portsmouth Network Corp.Some claims unpatentablePTAB · Jan 13, 2026 · IPR2024-00913 · APJ Justin T Arbes · IPR · Final written decision
Claims 1, 2, 4, 6, 7, 11, 12, 14, 16, and 17 are unpatentable over Blease, Weyman, and Hu, with some claims also over Deng; claims 8–10 and 18 were not shown unpatentable.
RulingsFinal written decision- Expert testimonyPetitioner expert discountedOther
“disclosure in Weyman (or Blease) for deactivating and activating ports, or performing certain actions in the time between such actions. Again, the only portion of Weyman cited pertains to a request to join the fabric from a processing unit having a “default” configuration, which does not relate to the timing or sequence of events in initialization. See Ex. 1006 ¶¶ 69, 156, 161–162; Ex. 1103 ¶¶ 93–94. Nor does Dr. Lavian point to any other evidence in the record supporting his conclusion that a person of ordinary skill in the art would have “ensure[d] that the processing unit is deactivated prior to being updated for use . . . and then activate[d] the processing unit after updating.” See Ex. 1103 ¶ 94. Accordingly, we give little weight to Dr. Lavian’s conclusory opinion” slip op. at 75
- Obviousness (§103) › Motivation to combine / reasonable expectation of successUnpatentableUnpatentable
“See Axonics, 73 F.4th at 957; Allied Erecting, 825 F.3d at 1381; Mouttet, 686 F.3d at 1332–33. Petitioner’s position is that, based on the teachings of Weyman, a person of ordinary skill in the art would have modified Blease’s system to distribute the functionality of control unit 44 (including its existing multicast forwarding information 48 used by OIF mapper 50). See Pet. 23–26, 38; Fleming v. Cirrus Design Corp., 28 F.4th 1214, 1222 (Fed. Cir. 2022) (“That the proposed combination of [two references]—rather than one of the individual references—discloses the disputed claim limitations does not defeat the Board’s conclusion of obviousness. In this case, it is sufficient that a person of ordinary skill in the art would have been motivated to combine the prior art in a way such that the combination discloses the claim limitations.”).” slip op. at 55
- Obviousness (§103) › Graham factors (scope of art, differences, level of skill)Not shown unpatentableNot shown unpatentable
“10 In the Cisco IPR, we determined that Cisco had proven claims 8 and 18 to be unpatentable based on a different combination of references (identified as Weyman, Jain, and LeMaire), finding that limitation 8[f.ii] was taught by Jain and LeMaire. IPR2024-00506, Paper 38 at 58–77. As explained herein, we are not persuaded by Petitioner’s arguments in this proceeding that limitation 8[f.ii] is taught or suggested by Weyman. Also, in the Decision on Institution in this proceeding, the Board found that there were questions as to Petitioner’s showing for limitation 8[f.ii] and declined to reach a conclusion on whether Petitioner had shown a reasonable likelihood of prevailing on its asserted ground based on Blease and Weyman. Dec. on Inst. 43.” slip op. at 71
Patent outcomesUS 8,014,394 mixed§ 103 obviousnesscites KSR · GrahamPatents in suitUS 8,014,394 - Ericsson Inc. / Nokia Of America Corporation v. XR Communications LLCAll claims unpatentablePTAB · Nov 25, 2025 · IPR2024-00868 · APJ Kara L Szpondowski · IPR · Final written decision
Claims 1, 2, 4–6, 9–11, 13–15, and 18–20 are unpatentable as obvious over Trigui; claims 4–6, 13–15, and 18 are also unpatentable over Trigui and Rudrapatna.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedDecided for petitioner
“Patent Owner does not challenge Petitioner’s characterization of the level of ordinary skill in the art, or provide an alternative level of ordinary skill in the art. PO Resp. 9. In the Institution Decision, we adopted Petitioner’s proposed level of ordinary skill in the art, which was also undisputed by Patent Owner at that stage of the proceeding. Inst. Dec. 11–12. Because nothing in the record establishes that our preliminary finding in the Institution Decision was incorrect, and because there is no dispute, we maintain our adoption of Petitioner’s proposed level of ordinary skill in the art.” slip op. at 12
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“C. Claim Construction Petitioner contends “[n]o specific construction of any term is required,” and Petitioner has applied the “ordinary and customary meaning” of the claim terms. Pet. 13–14. Patent Owner states that, “[f]or purposes of this proceeding, Patent Owner agrees that no formal claim construction is necessary.” PO Resp. 9. Patent Owner provides the Board with the district court’s constructions in the related litigation. Id. (citing 2007, 39).4 4 The Petition in this case was filed on May 8, 2024. In the related litigation, Patent Owner’s opening brief on claim construction was filed on July 15, 2024, defendants’ responsive brief on claim construction was filed on this Decision, we need not expressly construe any claim terms to resolve the parties’ disputes. See Realtime Data, LLC v. Iancu, 912 F.3d 1368, 1375 (Fed. Cir. 2019) (“The Board is required to construe ‘only those terms that . . . are in controversy, and only to the extent necessary to resolve the controversy.’”) (quoting Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999)). Accordingly, to the extent necessary, we apply the district court’s constructions and the plain and ordinary meaning of the claim terms. To the extent that the scope of any particular claim term requires discussion, we provide it in our assessment of the challenges.” slip op. at 12
- Obviousness (§103) › Graham factors (scope of art, differences, level of skill)UnpatentableUnpatentable
“Figures 6 and 10 show multiples of the system of Figure 2A. Id.; see also id. ¶ 81 (describing Figure 6) ¶ 85 (describing Figure 10). We find persuasive Petitioner’s arguments that Trigui’s arrays may consist of “subarrays.” See Pet. 24; Reply 9. For example, Trigui describes that “[t]he antenna arrays 256 may consist of sub-arrays where the antenna elements of each sub-array are combined passively to achieve a predefined pattern.” Ex. 1004 ¶ 50. To that end, Figure 6 shows one antenna array that consists of two Passive Antenna Sub-arrays (i.e., the plurality of antenna elements), and Figure 10 shows two antenna arrays that each consist of two Passive Antenna Sub-arrays (i.e., the plurality of antenna elements). See Pet. 28–32; Reply 9–11. Given this disclosure in Trigui, we do not find persuasive Patent Owner’s arguments that Figure 6 does not show a single antenna array, or that Figure 10 does not show two antenna arrays. PO Resp. 17–18. Patent Owner also argues that a person of ordinary skill in the art would understand that Trigui’s sub-arrays are not intended to be combined. PO Resp. 18. This argument contradicts Trigui’s disclosure, which shows multiples of the hardware of Figure 2A in Figures 6 and 10, and encourages multiple operator sharing of passive antenna arrays and transceivers. See, e.g., Reply 4 (describing Trigui as “providing building blocks that should be combined to understand Trigui’s full teachings”); Ex. 1004 ¶¶ 48, 68. Trigui even states as much: Although FIG 2A illustrates only a single MIMO branch DIAA, the present invention contemplates the use of multiple MIMO branches (as will be illustrated below with reference to FIGS. 6–11) . . . Similarly, I/Q signals 215 from any of the modems, as well as the beamforming weights 214, can be sent to other MIMO branches. Patent Owner’s argument that “Trigui does not teach any relationship between the number of beams and the number of MIMO transceivers” is not well developed and is unpersuasive in light of Petitioner’s showing. Petitioner has demonstrated that Trigui’s Figure 6 depicts one antenna array with two bi-directional beams. Pet. 27–28. Petitioner has further demonstrated that Trigui’s Figure 10 depicts two antenna arrays, i.e., where m=2, where each array comprises a beamformer configured to produce n different bi-directional beams, i.e., where n=2. Id. at 28–29. Petitioner’s annotated Figure 10 is reproduced below: Id. at 29. Petitioner’s annotated Figure 10 shows two copies of the arrangement shown in Figure 6, where Petitioner has identified in red the two antenna arrays, and identified in blue the beams. That is, Trigui’s Figure 10 shows two antenna arrays that each produce two beams. Figures 3 and 4 of Trigui (PO Resp. 16–17) do not address Petitioner’s contentions. See Reply 6–7. Petitioner relies on Figures 4A and 4B to support that “[e]ach of Trigui’s arrays can produce multiple beams.” Pet. 26; Reply 7. Dr. Cooklev agrees. PO Resp. 16 (citing Ex. 2003 ¶ 91). However, as described above, Petitioner relies on Figure 6 to show “n” different bidirectional beams where n=2. Pet. 27. Petitioner does not rely on Figures 3 and 4 to teach the “n” number of beams. See Reply 7. Accordingly, we do not agree with Patent Owner’s argument that the Petition provides no evidence for the “n different bidirectional beams.” See Sur-reply 11–12; see Pet. 27 (citing Ex. 1004 ¶¶ 9, 14, 74, 77, 81; Ex. 1003 ¶¶ 189, 192, 193).” slip op. at 18
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundReasonable expectation foundDecided for petitioner
“Trigui explicitly discloses that its system may have multiple modems. See Pet. 38; Reply 15. For example, Figure 2A shows Modem A, Modem B, and Modem C for a single MIMO branch. Ex. 1004 Fig. 2A; see also id. ¶37 (“one or more modems 204, such as, for example, baseband modules of cellular base stations”) ¶ 41 (“I/Q signals 215 from any of the modems . . . can be sent to other MIMO branches”); see Pet. 34. We find persuasive Petitioner’s explanation, supported by testimony from Dr. Negus, that “Trigui teaches use cases in which two separate wireless network operators would share certain tower [equipment,] such as the antenna arrays, but each wireless network operator would have its own baseband unit (i.e., modems A for the first operator and B for the second operator).” Pet. 33 (citing Ex. 1003 ¶¶ 226–232); e.g., Ex. 1004 ¶ 48 (stating that “the present invention . . . enable[s] multiple operator sharing of a passive antenna array, transceivers, and the total available power of the DIAA”); id. (“[S]plitting resources between the multiple operators is flexible and should be done on the basis of the individual operator needs”); ¶ 2 (“enabling a versatile solution for sharing antenna elements and active electronics between multiple operators servicing the same geographic area”); see also Pet. 38–41 (providing further explanation that one modem would be implemented for each operator); Reply 18–21. Patent Owner agrees that the second modem would be for a different operator. PO Resp. 20 (stating that “[E]ven if a second modem is added, it would be for a different operator”).5 Therefore, we are persuaded 5 In the Sur-reply, Patent Owner argues the opposite; that the operators would not have separate modems. Sur-reply 4. We rely on Patent Owner’s modems that share the two DIAA arrays in Figure 10. Pet. 42; Reply 18; In re Applied Materials, Inc., 692 F.3d 1289, 1298 (Fed. Cir. 2012) (“A reference must be considered for everything that it teaches, not simply the described invention or a preferred embodiment.”). Thus, we find that Petitioner’s proposed modification for Figure 10 is derived from Trigui’s disclosures, not through hindsight. See In re McLaughlin, 443 F.3d 1392, 1395 (CCPA 1971) (“Any judgment on obviousness is in a sense necessarily a reconstruction based on hindsight reasoning, but so long as it takes into account only knowledge which was within the level of ordinary skill at the time the claimed invention was made and does not include knowledge gleaned only from applicant’s disclosure, such a reconstruction is proper”).” slip op. at 26
Patent outcomesUS 8,737,511 unpatentableClaim construction§ 103 obviousnesscites KSR · GrahamPatents in suitUS 8,737,511 - Qualcomm Incorporated v. Unm Rainforest InnovationsAll claims unpatentablePTAB · Sep 30, 2025 · IPR2021-00375 · APJ Kristen L Droesch · IPR · Remand
Proposed substitute claims 44–47, 49, and 50 are unpatentable as obvious under collateral estoppel; the Board denied Patent Owner’s motion to amend.
RulingsRemand decision- RemandOther
“the Acting Director of the USPTO (Paper 81, “Acting Director’s Order”) and after a decision by the U.S. Court of Appeals for the Federal Circuit (“the Federal Circuit”) in ZyXEL Communications Corp. v. UNM Rainforest Innovations, 107 F.4th 1368 (Fed. Cir. 2024) (“Federal Circuit Decision”) regarding the Board’s original Final Written Decision (Paper 68, “Final Written Decision” or “Final Dec.”) in this proceeding. In particular, the court remanded to the Board to determine if proposed substitute claims 44–47, 49, and 50 are unpatentable as obvious under collateral estoppel based on the court’s holding that claims 1–4 and 6–8 are unpatentable as obvious. ZyXEL, 107 F.4th at 1371, 1384.” slip op. at 2
- Obviousness (§103) › Graham factors (scope of art, differences, level of skill)UnpatentableUnpatentable
“proposed substitute claim 44 presents the same issues as those litigated before the Federal Circuit: whether it would have been obvious to a person of ordinary skill in the art to include the first key element and whether it would have been obvious to a person of ordinary skill in the art to include the second key element.” slip op. at 9
- PTAB / AIA Trials › Motions to amend / substitute claimsMotion to amend, deniedDenied
“Final Written Decision, and the Federal Circuit Decision, as well as the postremand briefing, we determine that the application of collateral estoppel to proposed substitute claim 44 is appropriate. It is also appropriate to apply collateral estoppel to substitute claims 45–47, 49, and 50. This is because proposed substitute claims 45–47, 49, and 50 depend from proposed substitute claim 44 and recite identical limitations to dependent claims 2–4, 6, and 7. Therefore, the resolution of the question of obviousness of the subject matter of proposed substitute claims 45–47, 49, and 50 necessarily presents the same issues of whether it would have been obvious to a person of ordinary skill in the art to include the first key element and whether it would have been obvious to a person of ordinary skill in the art to include the second key element.” slip op. at 11
Patent outcomesUS 8,265,096 unpatentable§ 103 obviousnessPatents in suitUS 8,265,096 - Cisco Systems, Inc. v. Portsmouth Network Corp.Some claims unpatentablePTAB · Aug 4, 2025 · IPR2024-00505 · APJ Justin T Arbes · IPR · Final written decision
Claims 1, 2, 4–7, 9, 10, 13, 14, 16–19, 21, and 22 are unpatentable as obvious over Gai under theory 1B; claims 11, 12, 23, and 24 were not shown unpatentable.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedDecided for petitioner
“patent, we look to “1) the types of problems encountered in the art; 2) the prior art solutions to those problems; 3) the rapidity with which innovations are made; 4) the sophistication of the technology; and 5) the educational level of active workers in the field.” Ruiz v. A.B. Chance Co., 234 F.3d 654, 666–67 (Fed. Cir. 2000). “Not all such factors may be present in every case, and one or more of them may predominate.” Id. at 667.” slip op. at 10
- Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITAPlain and ordinary meaningOther
“The most common type of MAC bridge is a switch, which has multiple ports connecting it to LANs, other switches, host computing systems, or other network elements. Switches can be roughly classified as access switches or core switches. An access switch has ports that connect to LANs and/or to other network endpoints, such as user computer systems. Core switches interconnect the access switches into a Wide Area Network (WAN), by direct connection between the core switch and access switches and/or by connection to other core switches. Core switches that are directly connected to access switches are referred to herein as edge switches. Ex. 1001, col. 1, ll. 27–38. Both parties refer to this disclosure when arguing whether particular switches in the asserted prior art (Gai) qualify as an “access switch” or “edge switch.” See Pet. 5, 22, 27–28 (“edge switches are ‘[c]ore switches that are directly connected to access switches’”), 71; PO Resp. 31–32 (“The ’986 patent discloses that ‘[a]n access switch has ports that connect to LANs and/or to other network endpoints.’ . . . The ’986 patent also discloses that edge switches are ‘[c]ore switches that are directly connected to access switches.’”); Reply 20, 22. Dr. Houh and Dr. Olivier do so as well. See Ex. 1003 ¶¶ 39, 66–67, 82–83, 166, 171, 193; Ex. 2001 ¶ 80. Based on the full trial record, we agree and conclude that the descriptions of “access switch” and “edge switch” in the ’986 patent reflect what was understood to be the plain and ordinary meanings of these terms at the time of the invention. Accordingly, we interpret “access switch” to mean a switch with ports that connect to LANs and/or to other network endpoints, such as user computer systems, and interpret “edge switch” to mean a core switch that is directly connected to an access switch.” slip op. at 12
- Obviousness (§103) › Graham factors (scope of art, differences, level of skill)UnpatentableNot shown unpatentableMixed
“and conclude that Petitioner has not shown sufficiently that a person of ordinary skill in the art would have been motivated to designate switch 117 as the root switch when implementing the network reconfiguration method of Gai. The only mention of an access switch connected to port 7 of switch 114 is at column 13, lines 59–63 of Gai. While that sentence establishes that such an access switch may exist in the network, it does not state or imply that it would be the root switch. Instead, when discussing the operation of the Figure 1 network, Gai only identifies switches 120 and 121 as the root switch. See Ex. 1005, col. 10, ll. 37–41, col. 11, ll. 60–64, col. 14, ll. 16–20, col. 15, ll. 27–29, 38–51, col. 16, ll. 42–45. To be sure, Gai does disclose that “execution of the spanning tree algorithm causes the switches to elect a single switch, among all the switches within each network, to be the ‘root’ switch,” where “[e]ach switch has a unique numerical identifier (switch ID) and the root is the switch having the lowest switch ID numeric value,” such that an access switch can be the root switch if it has the lowest switch ID. See Ex. 1005, col. 2, ll. 42–47, col. 10, ll. 29–36. As Patent Owner and Dr. Olivier explain in detail, though, Gai expressly cautions against doing so. Gai discloses that [d]epending on the configuration of a given network, the location of the root can significantly affect the distance that messages must travel. For example, many networks include a plurality of switches designated as access switches that provide connectivity to LANs, end stations, etc., and a plurality of backbone switches that, in turn, interconnect the various access switches. If the root is located at an access switch and the principal server utilized by the end stations (i.e., clients) is coupled to a backbone switch, the average distance between end stations and the primary server may be quite high, resulting in inefficient network operation. In addition, the backbone switches may become partitioned as ports between them are blocked. Id. at col. 3, ll. 17–29; see also id. at col. 10, ll. 26–29 (the “location of the root may affect the average distance (i.e., the average number of hops) a message travels and/or cause undesirable partitioning of backbone switches”). Thus, the location of the root is not an unimportant consideration—it affects the distance messages must travel and can cause backbone switches to be partitioned. See id. Gai, therefore, discloses that “[t]o reduce the average distance and avoid partitioning of the backbone switches, it is desirable to locate the root at a backbone switch.”10 Id. at col. 3, ll. 29–31 (emphasis added). Switch 117 in Petitioner’s modified Figure 1 is an access switch, not a backbone switch. See id. at col. 6, ll. 10–12 (“Access switches are preferably coupled to entities (e.g., LANs, end stations, etc.) whereas backbone switches provide the interconnections between access switches.”).” slip op. at 44
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundMotivation not foundMixed
“We agree with Petitioner. For purposes of claim 1, which does not recite “downstream” communication of dummy traffic (unlike claims 11, 12, 23, and 24), the only modification to Figure 1 is the addition of switch 117 and server 112e—otherwise, in Petitioner’s analysis, Gai’s method operates exactly as described when a failure occurs at root port 3 of switch 114. See Pet. 69–73, 81–85; Tr. 47:20–48:2. That modification is expressly supported by Gai, which discloses the following: Rapid reconfiguration entity 234 similarly generates one or more separate multicast messages 400 for each remaining entity directly coupled to access switch 114 (i.e., entities or end stations on LANs 102–104). In each message 400, entity 234 loads SA field 414 with the address of the corresponding entity. Each of these messages are similarly forwarded by access switch 114 through the new forwarding port (i.e., port number four). In addition, entity 234 generates and transmits one or more multicast messages 400 for entities reachable through switch 114 on ports other than its root port. For example, if port number seven at switch 114 were coupled to another access switch, entity 234 would transmit multicast messages 400 carrying the source address of entities directly coupled to this additional access switch as well. Thus, at least one multicast message 400 is generated and transmitted for each entity directly coupled to or downstream of access switch 114 (relative to the root). As set forth above, upon receipt of these multicast messages 400, the other devices within network 100 update their corresponding filtering databases with the new destination ports, as necessary. Ex. 1005, col. 13, l. 50–col. 14, l. 3 (emphasis added). Gai thus expressly contemplates the addition of “another access switch” coupled to port 7 of switch 114. Switch 117 in the modified Figure 1 is such a switch. See PO Resp. 30 (Patent Owner arguing that “a [person of ordinary skill in the art] would understand that switch 117 is an access switch”); Ex. 1018, 84:14–85:9 (Dr. Olivier agreeing that switch 117 is an “access switch”). And because an “access switch” has “ports that connect to LANs and/or to other network endpoints, such as user computer systems,” and the above disclosure mentions “entities directly coupled to th[e] additional access switch,” switch 117 would be directly connected to a device like server 112e as well. See Ex. 1001, col. 1, ll. 31–33; Ex. 1005, col. 13, ll. 59–63; supra Section II.B. We credit Dr. Houh’s testimony that Gai in its written description expressly discloses the particular “variation of the topology” of Figure 1 that Petitioner asserts. See Ex. 1003 ¶ 165. Third, Patent Owner argues that Petitioner has not established that a person of ordinary skill in the art “would have had a reasonable expectation of success in modifying Gai to meet the claims.” PO Resp. 14–16 (citing Ex. 2001 ¶¶ 47–49). Patent Owner’s arguments are primarily directed to Petitioner’s asserted modification for its “1A” theory. See id. To the extent Patent Owner’s arguments apply to claim 1 and “1B,” we disagree, as Gai expressly describes the asserted modification to Figure 1 (i.e., adding an access switch connected to port 7 of switch 114). Thus, we are persuaded that a person of ordinary skill in the art would have had a reasonable expectation of success in achieving the method of claim 1 based on Gai’s full disclosure.” slip op. at 33
Patent outcomesUS 6,917,986 mixedClaim construction§ 103 obviousnesscites KSR · GrahamPatents in suitUS 6,917,986 - PTAB · Jul 22, 2025 · IPR2025-00255 · APJ Charles J Boudreau · IPR · Institution
The Board instituted IPR on claims 1–27 and all petition grounds, finding a reasonable likelihood that claims 1, 23, and 27 are obvious over Wilcox, Londergan, Raskin, and Wu.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“c) Summary For the reasons discussed above, Petitioner has made sufficient showings at this stage of the proceeding that the Wilcox-Londergan-Raskin- Wu combination teaches or suggests every limitation in claims 1, 23, and 27 of the ’139 patent, that one of ordinary skill in the art would have had reason to combine those teachings and suggestions to arrive at the inventions recited in claims 1, 23, and 27, and that one of ordinary skill in the art would have had a reasonable expectation of success. Accordingly, Petitioner has demonstrated a reasonable likelihood of prevailing on its challenges to claims 1, 23, and 27 based on the combination of Wilcox, Londergan, Raskin, and Wu. Accordingly, institution of an inter partes review is appropriate under 35 U.S.C. § 314(a).” slip op. at 33
- Skill levelSkill level patent owner adoptedDecided for patent owner
“Patent Owner does not comment on Petitioner’s formulation or offer any competing formulation in its Preliminary Response. See generally Prelim. Resp. Mr. Haeberli, however, testifies as follows in his Declaration: 29. In my opinion, the POSITA at the time of the alleged invention of the Asserted Patents would have had a (1) a Bachelor’s degree in a pertinent discipline, such as computer science, electric engineering, computer engineering, or a related field and (2) have 2–4 years of experience in working with computing devices and have an understanding of indexed search systems utilized by such computing devices. 30. I am aware that Dr. Terveen has provided its own definition . . . . 31. I believe Dr. Terveen’s definition is not meaningfully different from my definition of a POSITA. My opinions would not change regardless of which definition of POSITA is applied. Ex. 2001 ¶¶ 29–31. We find Mr. Haeberli’s formulation to be consistent with the evidence of record at this stage of the proceeding, including the asserted prior art and the ’139 patent, and, accordingly, we adopt and apply that definition for purposes of this Decision. B.” slip op. at 8
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)Term construed board ownOther
“missing in the prior art. Prelim. Resp. 29–34. Limitations [1.4], [23.5], and [27.4] each recite: “wherein the first and second partial search strings are separated by a string separator character in the first search field.” Ex. 1001, 29:47–49, 31:33–35, 32:29–31. Petitioner asserts that both of the Lotus Notes references teach receiving a first search string and a second search string in a single search field, separated by “a string separator character (e.g., a Boolean AND operator and/or a comma).” Pet. 25–26 (footnote omitted). We are not fully persuaded by Petitioner’s argument. In particular, the evidence does not support Petitioner’s argument that a Boolean operator such as “AND” is a string separator character. Patent Owner has pointed to intrinsic and extrinsic evidence demonstrating that a string separator character consists of just one character.17 Consequently, based on the 17 As Patent Owner argues, the intrinsic evidence does not support this interpretation of the claim language. Prelim. Resp. 31–32. “First, the ’139 patent distinguishes between string separator characters (such as space, comma, etc.) and ‘modifiers’ (such as AND, OR, NOT, etc.).” Id. at 31; compare Ex. 1001, 30:19–22 (claim 6, “string separator character”), with id. at 31:22–26 (claim 22, Boolean “modifiers”). Moreover, Patent Owner persuasively argues that “a POSITA would not understand Boolean operators such as ‘AND’ to function as string separator characters” and “would have known that the operator AND is a search syntax instruction rather than a string separator.” Prelim. Resp. 31 (citing Ex. 1059, 162; Ex. 2001 ¶ 110). Even Petitioner acknowledges in a footnote that it may not be appropriate to include the Boolean AND operator in the definition of “string separator character.” Petitioner argues:” slip op. at 28
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundInstituted
“one of ordinary skill in the art would have considered “reverting some of the changes that had been made to Lotus Notes R5’s ‘Search Builder’ to make it more similar to Lotus Notes earlier 3.0’s ‘Query Builder.’” Prelim. Resp. 16. The issue, however, is not whether “over the years Lotus Notes moved away from a unified search field[,]” as Patent Owner suggests. Id. at 14. The issue is what “inferences and creative steps” a person of ordinary skill in the art would have employed, based on Wilcox and Londergan, when designing a new method and system for search indexing. KSR, 550 U.S. at 418. Petitioner’s argument is that one of ordinary skill in the art would have been motivated to consider Wilcox and Londergan together in order to “obtain a more complete and comprehensive understanding of the Lotus Notes system,” which in turn would have inspired certain inferences and creative steps that would have resulted in the portions of the claimed invention allegedly disclosed in Wilcox and/or Londergan. Pet. 22. We do not agree with Patent Owner that this argument can only be the result of improper hindsight bias. See Prelim. Resp. 16–17. At this stage of the proceedings and based on the current record, we determine that Petitioner has sufficiently shown that a POSITA would have been motivated to combine Wilcox and Londergan.” slip op. at 20
Claim construction§ 103 obviousnesscites Phillips · KSRPatents in suitUS 9,633,139 - Qualcomm Incorporated v. Network System Technologies, LLCAll claims unpatentablePTAB · Jun 13, 2025 · IPR2024-00343 · APJ Charles J Boudreau · IPR · Final written decision
Claims 1–7 are unpatentable as obvious over Rădulescu2004 and OCP; the Board did not reach the Weber-based grounds.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedDecided for petitioner
“include (1) the educational level of the inventor; (2) the type of problems encountered in the art; (3) prior-art solutions to those problems; (4) the rapidity with which innovations are made; (5) the sophistication of the technology; and (6) the educational level of workers active in the field. Envtl. Designs, Ltd. v. Union Oil Co., 713 F.2d 693, 696–97 (Fed. Cir. 1983). Not all factors may exist in every case, and one or more of these or other factors may predominate in a particular case. Id. These factors are not exhaustive, but merely a guide to determining the level of ordinary skill in the art. Daiichi Sankyo Co. v. Apotex, Inc., 501 F.3d 1254, 1256 (Fed. Cir. 2007). Moreover, the prior art itself may reflect an appropriate skill level. Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001).” slip op. at 13
- Claim Construction › Functional claiming / §112(f) means-plus-function › Whether §112(f) applies (Williamson, nonce words)§112(f) appliesDecided for petitioner
“35 U.S.C. § 112 ¶ 6 (2006). “[T]he use of the word ‘means’ in a claim element creates a rebuttable presumption that § 112, para. 6 applies.” Williamson v. Citrix Online, LLC, 792 F.3d 1339, 1348 (Fed. Cir. 2015) (en banc in relevant part); Personalized Media Commc’ns, LLC v. Int’l Trade Comm’n, 161 F.3d 696, 703–04 (Fed. Cir. 1998). “[This] presumption may be rebutted if the properly construed claim limitation itself recites sufficiently definite structure to perform the claimed function.” Kemco Sales, Inc. v. Control Papers Co., 208 F.3d 1352, 1361 (Fed. Cir. 2000).” slip op. at 16
- Claim Construction › Functional claiming / §112(f) means-plus-function › Corresponding structure / algorithm (indefinite if none)Term construed patent owner constructionDecided for patent owner
“Ex. 1001, 4:46–50. This passage indicates that the interconnect can be a network on a chip and the network on a chip can include wires and buses. That does not necessarily mean that the interconnect can be just wires or buses; rather, it discloses that the interconnect can include wires and buses. In context, the disclosure regarding wires and buses does not support construing the corresponding structure broadly enough to encompass just wires and buses. The networks that constitute the corresponding structure, however, could include networks with wires and buses. Therefore, we agree with Patent Owner that the corresponding structure for the interconnect means should not include a mere bus, switch, and point-to-point wire and instead find that the corresponding structure under 35 U.S.C. § 112 ¶ 6 is a network, which the ’052 patent describes as a multi-hop interconnection between modules separated by one or more network nodes. See Ex. 1001, 2:33–37. Because this structure corresponds to the construction of “interconnect means” proposed by Patent Owner and adopted by the district courts in the TI and Qualcomm litigations (see supra Section III.C.3.b), and we do not rely in our analysis below on a recourse to “equivalents thereto” as permitted by § 112 ¶ 6, we note that our ultimate conclusions on the unpatentability of the challenged claims would be the same if § 112 ¶ 6 did not apply. iii. Conclusion For the reasons stated above, we construe “interconnect means” to cover the structure described in the Specification corresponding to the specified functions of “coupling said plurality of processing modules (M, S)” in the context of claim 6 and “coupling said plurality of processing modules (M, S)” and “enabling a connection-based communication having a set of connection properties” in the context of claims 1 and 7—i.e., a “multi-hop interconnection between modules separated by one or more network nodes”—and equivalents thereof.” slip op. at 28
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“standard as would be used by a district court to construe a claim in a civil action involving the validity or infringement of a patent. 37 C.F.R. § 42.100(b). Under that standard, claim terms are given their ordinary and customary meaning, as would have been understood by a person of ordinary skill in the art at the time of the invention, in light of the language of the claims, the specification, and the prosecution history of record. Id.; Phillips v. AWH Corp., 415 F.3d 1303, 1312–19 (Fed. Cir. 2005) (en banc); Thorner v. Sony Comput. Entm’t Am. LLC, 669 F.3d 1362, 1365–66 (Fed. Cir. 2012). “The Board is required to construe ‘only those terms . . . that are in controversy, and only to the extent necessary to resolve the controversy.’” Realtime Data, LLC v. Iancu, 912 F.3d 1368, 1375 (Fed. Cir. 2019) (quoting Vivid Techs., Inc. v. Am. Sci. Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999))).” slip op. at 15
Patent outcomesUS 7,594,052 unpatentableClaim construction§ 102 anticipation§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 7,594,052 - Qualcomm Incorporated v. Network System Technologies, LLCAll claims unpatentablePTAB · Jun 13, 2025 · IPR2024-01081 · APJ Steven M Amundson · IPR · Final written decision
Claims 2, 6, and 9–16 are unpatentable as obvious over Goossens2003 and Drake; the Board did not reach the Goossens2002 and Drake challenge.
RulingsFinal written decision- Obviousness (§103) › Motivation to combine / reasonable expectation of successUnpatentableUnpatentable
“3. WHETHER AN ORDINARILY SKILLED ARTISAN WOULD HAVE BEEN MOTIVATED TO COMBINE THE TEACHINGS OF” slip op. at 54
- PTAB / AIA Trials › Joinder §315(c) / SAS all-or-nothingJoinder, grantedGranted
“Qualcomm”) filed a petition in IPR2024-01081 challenging claims 2, 6, and 9–16 in the ’449 patent on substantively identical grounds to those asserted in Samsung’s Petition. Qualcomm Incorporated v. Network System Technologies, LLC, IPR2024-01081, Paper 1 (“Pet.”).2 Concurrently with filing the petition in IPR2024-01081, Petitioner filed a motion for joinder, seeking joinder as a party in this proceeding under 35 U.S.C. § 315(c). IPR2024-01081, Paper 3. slip op. at 3
- PTAB / AIA Trials › §315(b) time barNot time barredDecided for petitioner
“IV. JOINDER AND THE ONE-YEAR TIME BAR IN § 315(b) Regarding joinder, § 315(c) permits joinder as a party and states:” slip op. at 157
- ExcludeOther
“In our analyses above, we do not rely on any of the evidence that Petitioner seeks to exclude. See, e.g., supra §§ III.C–III.E. Hence, we dismiss Petitioner’s motion to exclude evidence as moot. See, e.g., Netflix, Inc. v. GoTV Streaming, LLC, IPR2023-00757, Paper 39 at 135 (PTAB Nov. 5, 2024) (dismissing motion to exclude evidence as moot); Volkswagen Grp. of Am., Inc. v. Spero, IPR2023-00335, Paper 40 at 24 (PTAB July 15, 2024) (dismissing motion to exclude evidence as moot).” slip op. at 159
Patent outcomesUS 7,373,449 unpatentable§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 7,373,449 - Samsung Electronics Co., Ltd. / Qualcomm Incorporated v. Network System Technologies, LLCAll claims unpatentablePTAB · Jun 13, 2025 · IPR2024-00338 · APJ Steven M Amundson · IPR · Final written decision
Claims 2, 6, and 9–16 are unpatentable under § 103(a) as obvious over Goossens2003 and Drake.
RulingsFinal written decision- Obviousness (§103) › Motivation to combine / reasonable expectation of successUnpatentableUnpatentable
“Accordingly, “the teachings of Drake apply directly to systems on” slip op. at 82
- PTAB / AIA Trials › Joinder §315(c) / SAS all-or-nothingJoinder, grantedGranted
“In October 2024, the Board (1) instituted an inter partes review in IPR2024-01081, (2) granted Petitioner’s motion for joinder in IPR2024- 01081, and (3) joined Petitioner as a party in this proceeding. Paper 16 (“Qualcomm Inst. Dec.”), 50–51; IPR2024-01081, Paper 14 at 50–51. The next day, based on a settlement between Samsung and Patent Owner, the Board granted in part a joint motion to terminate filed by Samsung and Patent Owner and terminated Samsung as a petitioner in this proceeding. See Paper 14 (Joint Motion); Paper 17 (Order).” slip op. at 3
- ExcludeOther
“In our analyses above, we do not rely on any of the evidence that Petitioner seeks to exclude. See, e.g., supra §§ III.C–III.E. Hence, we dismiss Petitioner’s motion to exclude evidence as moot. See, e.g., Netflix, Inc. v. GoTV Streaming, LLC, IPR2023-00757, Paper 39 at 135 (PTAB Nov. 5, 2024) (dismissing motion to exclude evidence as moot); Volkswagen Grp. of Am., Inc. v. Spero, IPR2023-00335, Paper 40 at 24 (PTAB July 15, 2024) (dismissing motion to exclude evidence as moot).” slip op. at 159
Patent outcomesUS 7,373,449 unpatentable§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 7,373,449
Holdings, summaries, rulings, issues, outcomes, winners and claim constructions shown for a decision were generated by a large language model reading the opinion. They are a guide to the decision, not the decision. Confirm every one against the court's own text before relying on it. Outcomes read from the patent owner’s side. Party names are extracted from the decision and are missing on about 900 short Director denials and scans, which carry the trial number instead.