- Tiktok Inc. v. Ntech Properties, Inc.Some claims unpatentablePTAB · Feb 6, 2026 · IPR2024-01340 · APJ Terrence W Mcmillin · IPR · Final written decision
Claims 1–12 and 14–18 are unpatentable as obvious over Whitehead, alone or with Marcus ’904; claims 13 and 19–24 were not shown unpatentable.
RulingsFinal written decision- Obviousness (§103) › Graham factors (scope of art, differences, level of skill)UnpatentableNot shown unpatentableMixed
“establishes that the subject matter of independent claim 19 would have been obvious in view of Whitehead. Claim 19 recites “an aggregator having a memory and a processor, the processor adapted for . . . providing an output signal including data indicative of the selection and of user data.” Ex. 1001, 15:51–16:3. As discussed above (Section II.C.2), we construe claim 19 as requiring a signal including both “data indicative of the selection and of user data.” Accordingly, we consider whether Petitioner has shown that Whitehead teaches or suggests that the “aggregator” “provid[e] an output signal including” both “data indicative of the selection and of user data.”” slip op. at 46
- Expert testimonyOther
“Cristofalo’s “user identifiers” represent data about users that Cristofalo’s system uses to “select a specific media object” (advertisements) from received “multi-object programming data.” Cristofalo at ¶ [0048]. For example, a user identifier may indicate that a given user is a Coca-Cola drinker, and when the receiving system receives the multi-object programming data it can select a particular media object out of several possible media objects (e.g., a Pepsi advertisement) to push to the user. Id. This user data exists independently of, and does not relate to, any particular media stream or streams. See Goodrich PO Resp. Decl. at ¶ 135. Petitioner seems to recognize this when tersely referring to “user identifiers” as “data,” not “data relating to a plurality of streams.” Pet. at 71. Accordingly, Cristofalo’s “user identifiers” are not the claimed “data related to the plurality of media streams.” Goodrich PO Resp. Decl. at ¶ 136.” slip op. at 73
Patent outcomesUS 8,145,704 mixed§ 103 obviousnesscites GrahamPatents in suitUS 8,145,704 - Tiktok Inc. v. Ntech Properties, Inc.Some claims unpatentablePTAB · Jan 23, 2026 · IPR2024-01342 · APJ Terrence W Mcmillin · IPR · Final written decision
Claims 1–4 and 6–10 are unpatentable as obvious over each asserted ground; claim 5 was not shown unpatentable because the petitions failed to establish its additional feed and time-period limitations.
RulingsFinal written decision- Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITAPlain and ordinary meaningDecided for petitioner
“1b, 1c, and 1e of claim 1 and in claims 4 and 5 of the ’753 patent. Patent Owner contends that the plain and ordinary meaning of “feed” is “one or more associated media elements.” See, e.g., PO Resp. 4. However, as discussed below, this alleged plain and ordinary meaning of feed is not supported by the claim language, the specification of the ’753 patent, or dictionary definitions of feed as contended by Patent Owner. We reject this contention and the related contentions that the cited art may be distinguished from the claims of the ’753 patent based on the recited term “feed.” Patent Owner relies on the language of claim 1 to support its” slip op. at 13
- Skill levelSkill level petitioner adoptedDecided for petitioner
“The parties’ definitions are similar, although we observe that Patent Owner proposes that the person of ordinary skill would have a bachelor’s degree or an equivalent or professional experience, whereas Petitioner proposes that such a person would have both a degree and experience. Neither party presents any arguments relating or referring to the level of ordinary skill in the art. Determining the level of ordinary skill in the art involves various factors, including the “type of problems encountered in the art; prior art solutions to those problems; rapidity with which innovations are made; sophistication of the technology; and educational level of active workers in the field.” In re GPAC Inc., 57 F.3d 1573, 1579 (Fed. Cir. 1995) (citation omitted). The prior art of record also reflects the level of ordinary skill in the art. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001). We adopt Petitioner’s assessment of the level of skill in the art. Petitioner’s assessment is supported by the testimony of Dr. Almeroth and is consistent with the ’753 patent and the asserted prior art. However, our obviousness analysis would be the same under either party’s assessment. See Ex. 2014 ¶ 17 (Patent Owner’s declarant, Dr. Goodrich, stating that “I note that my definition of a POSITA is similar to that of Dr. Almeroth” and “My opinions in this declaration would not change were I to adopt the definition of a POSITA offered by Dr. Almeroth.”).” slip op. at 11
- Expert testimonyPetitioner expert discountedDecided for patent owner
“16 With regard to claim 5, the Petition cites paragraphs 97 and 98 of the Almeroth Declaration (Ex. 1002). See Pet. 28–29. We have considered the cited paragraphs in the Almeroth Declatation and found that they consist of nothing more than the inadequate and conclusory contentions in the Petition preceded by, in paragraph 97, “[i]n my opinion” and “it is my opinion” and, in paragraph 98, “[i]t is also my opinion.” Ex. 1003 ¶¶ 97, 98. As related to claim 5, we accord the Almeroth Declaration little or no weight. See 37 C.F.R. § 42.65 (a) (“Expert testimony that does not disclose the underlying facts or data on which the opinion is based is entitled to little or no weight.”). that might become out-of-date before a user accesses access [sic] them. Ex. 1003, 11:49–58 (emphasis added). The cited passage in Whitehead mentioning “near real-time” does not support finding that Whitehead teaches or suggests the elements recited in claim 5.” slip op. at 39
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundReasonable expectation foundDecided for petitioner
“Petitioner contends, “[a] POSITA would have modified Whitehead’s mixing server 130 to incorporate Marcus ’904’s algorithm (running on Marcus ’904’s receiver) for receiving, selecting, ordering, and assembling different media streams (both for content and advertising).” Pet. 33. Petitioner supports this contention by articulating the following reasons for the asserted modification of Whitehead’s mixing server 130 to incorporate Marcus ’904’s algorithm: “makes it more likely the system will identify content best suited for a particular user,” “allows for more targeted advertising and/or an opportunity to maximize revenue,” “improves Whitehead’s ability to target content and advertising to a particular user,” “would unlock new revenue sources for Whitehead,” “Marcus ’904’s content selection and concatenation algorithm improves Whitehead’s efficiency,” “[b]oth Whitehead and Marcus ’904 generate custom media programming based on a user profile,” “incorporating Marcus ’904’s teachings would not require redesigning Whitehead’s architecture and instead merely supplements Whitehead’s disclosure,” and “Petitioner’s proposed modification can be implemented entirely in software and does not require any hardware modifications. Indeed, Whitehead acknowledges that such modifications are possible. EX1003 at 19:64-20:6, 22:26-40.” Id. at 33–35 (citing Ex. 1002 (Almeroth Decl.) ¶¶ 110–115) (emphasis omitted). Based on this undisputed showing, we find that one of ordinary skill would have had a motivation to combine the teachings of Whitehead and Marcus ’904 as asserted in the Petition with a reasonable expectation of success.” slip op. at 48
Patent outcomesUS 8,886,753 mixedClaim construction§ 103 obviousnesscites GrahamPatents in suitUS 8,886,753 - 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 - DISH Network LLC v. Entropic Communications, LLCSome claims unpatentablePTAB · Nov 14, 2025 · IPR2024-00373 · APJ Jon M Jurgovan · IPR · Remand
Claims 1, 4–8, and 10–16 are unpatentable under § 103; claims 2, 3, 9, and 17 were not shown unpatentable on any asserted ground.
RulingsRemand decision- RemandOther
“The Director then issued an Order, Paper 47 (“Director’s Order” or “Dir. Ord.”) granting Director Review, vacating-in-part the Final Written Decision, and remanding the case to this Board panel for proceedings consistent with the Order. The Director vacated-in-part the Final Written Decision because it did not sufficiently address Patent Owner’s arguments with respect to claim 17 (and similar claims 2 and 9). We have jurisdiction under 35 U.S.C. § 6. This Final Written Decision on Remand from Director Review is entered pursuant to 35 U.S.C. § 318(a). Having reviewed the complete trial record, we determine that Petitioner has shown, by a preponderance of the evidence, that the challenged claims are unpatentable except for claims 2, 3, 9, and 17.” slip op. at 3
- Skill levelSkill level petitioner adoptedDecided for petitioner
“B. Level of Ordinary Skill in the Art The person of ordinary skill in the art is a hypothetical person who is” slip op. at 13
- Obviousness (§103) › Analogous artAnalogous artDecided for petitioner
“2. Analogous Art – DSL-Book A reference is analogous art to the claimed invention if: (1) the” slip op. at 75
- Obviousness (§103) › Motivation to combine / reasonable expectation of success › Teaching awayTeaching away not foundDecided for petitioner
“4. Motivation to Combine Amit and Jacobsen Petitioner contends that a POSITA would have modified “Amit’s” slip op. at 31
Patent outcomesUS 7,594,249 mixed§ 103 obviousnesscites KSRPatents in suitUS 7,594,249 - Comcast Cable Communications, LLC v. Entropic Communications, LLCSome claims unpatentablePTAB · Sep 5, 2025 · IPR2024-00431 · APJ Jon M Jurgovan · IPR · Final written decision
Claims 1, 3, and 4 are unpatentable as obvious over Afshary and Mirfakhraei; claim 2 was not shown unpatentable over either asserted combination.
RulingsFinal written decision- Skill levelSkill level board ownDecided for petitioner
“Patent Owner’s proposal to limit a POSITA’s education and experience to “broadband networks over coaxial cables” is too narrow. Although Patent Owner points to various parts of the ’518 patent as supporting its restrictive proposal, other parts of the patent are not so limited. For example, the patent’s technical field and summary are not limited to coaxial cable, and the patent discusses twisted pair wiring and satellite communications as media that can be used. See, e.g., Ex. 1001, 1:27–29, 3:33–35, 3:49–50, 3:67–4:3, 5:61–6:3, 8:20–23, 9:28–33. Accordingly, we adopt the following level of ordinary skill in the art for use in this Decision: A POSITA would have a bachelor’s degree in electrical engineering, computer engineering, or a related field, and two to four years of experience with broadband communication networks. Additional professional experience could substitute for education, and additional education could substitute for professional experience. We find that this skill level is consistent with the problems and solutions identified in the ’518 patent and the prior art references asserted by Petitioner. In addition, we find the adopted skill level consistent with the education and experience that a POSITA would have had. See In re GPAC Inc., 57 F.3d 1573, 1579 (Fed. Cir. 1995) (citing Custom Accessories, Inc. v. Jeffrey-Allan Indus., Inc., 807 F.2d 955, 962 (Fed. Cir. 1986)) (citing factors to consider when determining level of ordinary skill in the art).” slip op. at 15
- Expert testimonyDecided for petitioner
“We determine that Mr. Bertonis and Mr. Garrett had at least the skill level of a POSITA at the time they submitted their declarations and testimony in this case. Ex. 1002 ¶¶ 4–15, Appx. A; Ex. 2001 ¶¶ 8–12, Appx. A; cf Osseo Imaging, LLC v. Planmeca USA Inc., 116 F.4th 1335 1341 (Fed. Cir. 2024) (“An expert need not have acquired that skill level prior to the time of the invention to be able to testify from the vantage point of a person of ordinary skill in the art.”). Accordingly, we see no reason to disregard the testimony of either on the basis that they do not have a POSITA’s skill level.” slip op. at 45
- Claim Construction › Functional claiming / §112(f) means-plus-function › Whether §112(f) applies (Williamson, nonce words)§112(f) appliesTerm construed petitioner constructionDecided for petitioner
“Because an assessment of whether the prior art discloses a means- plus-function limitation depends not only on the presence of the recited function but also the structure that performs that function as described in the patent’s specification, we address Petitioner’s undisputed contentions for the means-plus-function limitations below.” slip op. at 12
- Obviousness (§103) › Analogous artAnalogous artDecided for petitioner
“We conclude that Petitioner has shown by preponderant evidence that Mirfakhraei is in the same field of endeavor as the ’518 patent, i.e., “broadband communication networks.” Mirfakhraei is thus analogous art because it is in the same field of endeavor as the ’518 patent.” slip op. at 27
Patent outcomesUS 7,295,518 mixedClaim construction§ 103 obviousnesscites GrahamPatents in suitUS 7,295,518 - Comcast Cable Communications, LLC v. Entropic Communications, LLCSome claims unpatentablePTAB · Aug 15, 2025 · IPR2024-00442 · APJ Jon M Jurgovan · IPR · Final written decision
Claims 1–4, 9–13, and 18 are unpatentable as obvious; claims 5–8 and 14–17 were not shown unpatentable over the asserted grounds.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedDecided for petitioner
“Patent Owner “accepts” Petitioner’s proposed level of skill in the art “solely for purposes of responding to the Petition.” PO Resp. 11. We adopt and apply Petitioner’s proposed skill level because it is consistent with the problems and solutions identified in the ’826 patent and the prior art references asserted by Petitioner. In addition, we find the adopted skill level consistent with the education and experience that a POSITA would have had. See In re GPAC Inc., 57 F.3d 1573, 1579 (Fed. Cir. 1995) (citing Custom Accessories, Inc. v. Jeffrey-Allan Indus., Inc., 807 F.2d 955, 962 (Fed. Cir. 1986)) (citing factors to consider when determining level of ordinary skill in the art).” slip op. at 10
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)Plain and ordinary meaningDecided for patent owner
“As there is no controversy between the parties regarding any claim language that we would need to resolve in order to render our decision in this case, we apply the ordinary and customary meaning of the claim terms without specific construction. See Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999) (only claim terms in controversy need to be construed, and only to the extent necessary to resolve the controversy).” slip op. at 12
- Claim Construction › Functional claiming / §112(f) means-plus-function › Whether §112(f) applies (Williamson, nonce words)§112(f) does not applyDecided for petitioner
“In addition, Petitioner contends that the ’826 patent’s claims are not recited in means-plus-function form under § 112 ¶ 6. Pet. 25. Because the word “means” does not appear in the claims of the ’826 patent, there is a presumption that the claims do not recite means-plus-function limitations under § 112 ¶ 6. Williamson v. Citrix Online, LLC, 792 F.3d 1339, 1348 (Fed. Cir. 2015) (en banc in relevant part). Since neither party offers any argument or evidence to contravene this presumption, we do not construe any claim term as means-plus-function in rendering our decision.” slip op. at 12
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundDecided for petitioner
“Although Patent Owner argues that adding Konstaninos’s multi- channel functionality to Kamieniecki’s single-channel device would increase costs and complexity, Patent Owner overlooks that multi-channel functionality would also increase the STB’s capabilities. In any case, “a given course of action often has simultaneous advantages and disadvantages, and this does not necessarily obviate a motivation to combine.” General Elec. Co. v. Raytheon Tech. Corp., 983 F.3d 1334, 1351 (Fed. Cir. 2020) (citing Medichem, S.A. v. Rolabo, S.L., 437 F.3d 1157, 1165 (Fed. Cir. 2006)). Furthermore, Petitioner presents preponderant evidence that the market demand was such that customers would have desired an STB with multi-channel functionality even though it would cost more than a basic STB. Pet. Reply 6–8 (citing Ex. 1010 ¶¶ 1, 11, 16, 102–104; Ex. 1032 ¶¶ 5–6; Ex. 1033, 27:6–29:23; Ex. 2013 ¶¶ 70, 108). Konstantinos expressly teaches that the “evolving market for data and programming services will demand that receivers have the capability of multi-channel tuning.” Ex. 1010 ¶ 1. Petitioner has thus established that there was market demand that would have led a POSITA to improve Kamieniecki with Konstantinos’s multi-carrier capability. See KSR, 550 U.S. at 418 (“Often, it will be necessary for a court to look to interrelated teachings of multiple patents; the effects of demands known to the design community or present in the marketplace; and the background knowledge of a [POSITA], all in order to determine whether there was an apparent reason to combine the known elements in the manner claimed by the patent at issue.” (emphasis added)). Moreover, we agree with Petitioner that Konstantinos addresses the cost and complexity issues that Patent Owner asserts are problematic. Pet. 35–36; Pet. Reply 8–9 (citing Ex. 1010 ¶¶ 102, 105–106). For example, Konstantinos teaches that breaking up the original signal into smaller subsignals decreases the required sampling rate for each band since interleaved lower-rate samplers can be used, which reduces power consumption and interference, and enables conventional digital channel selection methods to be used for fine selection of one channel from a band of channels. Ex. 1010 ¶¶ 102, 104105. In addition, Konstantinos teaches reducing cost and complexity through a single chip solution. Ex. 1002 ¶ 150; Ex. 1010 ¶ 44. Hence, we do not see the cost or complexity issues that Patent Owner mentions as barriers that would have prevented a POSITA from making the combination. Similarly unavailing is Patent Owner’s stance that Kamieniecki is satisfactory for the applications for which it is designed such that a POSITA would not seek to improve it with Konstantinos. PO Sur-Reply 8–11. Konstantinos recognizes the market demand for multi-channel functionality, so adding this capability to Kamieniecki’s single-channel device would have been a natural thing for the POSITA to pursue in light of the advantages afforded thereby. Ex. 1010 ¶ 1; KSR, 550 U.S. at 420 (“any need or problem known in the field of endeavor at the time of the invention and addressed by the patent can provide a reason for combining the elements in the manner claimed”).” slip op. at 17
Patent outcomesUS 9,825,826 mixedClaim construction§ 103 obviousnesscites GrahamPatents in suitUS 9,825,826 - 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 - Xu Peicheng (Hong Kong) Optoelectronic Technology Co., Limited v. Semisilicon Technology Corp.Some claims unpatentablePTAB · May 14, 2025 · IPR2024-00156 · APJ Sheila F Mcshane · IPR · Final written decision
Claims 1–3 and 8 are unpatentable over the stated obviousness grounds; claims 4–6 were not shown unpatentable because Hiroyuki does not teach the claimed terminal pins.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedDecided for petitioner
“II. ANALYSIS A. Level of Ordinary Skill in the Art Relying on the Schubert Declaration, Petitioner proposes that a person of ordinary skill in the art “would have had a bachelor’s degree in electrical engineering, physics, materials science, or a related discipline, and 6 years of 1 The Leahy-Smith America Invents Act (“AIA”), Pub. L. No. 112–29, 125 Stat. 284 (Sept. 16, 2011), includes amendments to Section 103 that became effective on March 16, 2013. Because the challenged claims issued from an application filed before March 16, 2013, we apply pre-AIA law. See Pet. 2; Ex. 1001, codes (22), (30). 2 US 2009/0021955 A1, published January 22, 2009 (Ex. 1004, codes (10), (43)) (“Kuang”). Petitioner contends that Kuang is prior art to the ’546 patent at least under pre-AIA 35 U.S.C. § 102(b). Pet. 2. 3 US 2012/0050606 A1, published March 1, 2012 (Ex. 1005, codes (10), (43)) (“Debevec”). Petitioner asserts that “[b]ecause Debevec was filed prior to the priority date of the ’546 patent, it qualifies as prior art at least under pre-AIA 35 U.S.C. § 102(e).” Pet. 2. 4 US 6,774,584 B2, issued August 10, 2004 (Ex. 1008, codes (10), (45)) (“Lys”). Petitioner contends that Lys is prior art to the ’546 patent at least under pre-AIA 35 U.S.C. § 102(b). Pet. 2–3. 5 JP2006-228529, published August 31, 2006 (Ex. 1006, code (43)) (“Hiroyuki”). We refer herein to the certified English translation filed as Exhibit 1007. Petitioner contends that Hiroyuki is prior art to the ’546 patent at least under pre-AIA 35 U.S.C. § 102(b). Pet. 2. practical experience in designing or fabricating LED lighting systems, including controlling and driving LEDs,” or “[a]lternatively . . . would have had a master’s degree and four years of experience, or a Ph.D. degree and two years of experience.” Pet. 5 (citing Ex. 1003 ¶ 31). Patent Owner applies Petitioner’s asserted level of ordinary skill in the art. PO Resp. 7–8. For the purposes of this Decision, we adopt the assessment offered by Petitioner as it is consistent with the ’546 patent and the prior art before us. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001).” slip op. at 16
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededNot reached
“The parties also dispute the interpretation of the term “synchronous signals” recited in claim 1, with the parties proposing these respective constructions: Petitioner’s Proposed Patent Owner’s Proposed Construction Construction “signals that are sent to the slave “signals related to activities governed by synchronized timing” nodes to control their corresponding LED strings at the same time.”” slip op. at 20
- Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed petitioner constructionDecided for petitioner
“The “context” is typically evaluated by reviewing the intrinsic record. See e.g., Regeneron, 130 F.4th at 1380–84. Here, as discussed above, the ’546 patent has multiple disclosures where a curtain lamp has a single light-emitting diode in one light-emitting diode string. See Ex. 1001, 1:33–36, 6:15–20, 6:27–40, 8:25–45. In particular, the ’546 patent similarly discloses a first curtain lamp with one LED in one light string, as well as a second curtain lamp, which provides further support for Petitioner’s proposed interpretation. Id. at 8:25–45. Although Patent Owner argues that Figures 7 and 8 disclose multiple LEDs and light strings in curtain lamps, other embodiments and claims explicitly indicate single components in a “curtain lamp.” “[T]here is a strong presumption against a claim construction that excludes a disclosed embodiment.” See In re Katz Interactive Call Processing Patent Litig., 639 F.3d 1303, 1324 (Fed. Cir. 2011). Given that certain embodiments and claim 8 disclose a curtain lamp with one light string with one LED, we decline to interpret the claim to prohibit Petitioner’s interpretation. Additionally, we do not find that Petitioner’s claim interpretation renders the claim terms nonsensical or illogical. See Becton, 616 F.3d at 1255. Patent Owner asserts otherwise, arguing that Petitioner’s interpretation is based upon a “nonsensical” or “absurd[]” argument, there is no reason to have both a master and slave control unit to operate a single LED, and the interpretation renders most of the components superfluous. See PO Sur-reply 12; PO Resp. Supp. Br. 5. As discussed above, however, although the ’546 patent does not appear to provide any explanation for why there are master and slave control units to operate a single LED, the patent nevertheless discloses that in embodiments. This situation is also distinguishable from Becton, where “unequivocal language” of the claim recited “spring means ‘connected to’ the hinged arm,” such that interpreting the spring means and the hinged arm as the same structure would have rendered the claim nonsensical. Becton, 616 F.3d at 1254–55. Becton further found that interpreting the spring means and hinged arm as the same structure would be inconsistent with descriptions of the elements in the specification. Id. Here, in contrast, the ’546 patent Specification is replete with disclosures of a curtain lamp having one light string with one LED, and claim 8 is directed to the same. Accordingly, we adopt Petitioner’s interpretation of these claim elements.” slip op. at 36
- Strike new argumentNew argument consideredDecided for petitioner
“Although Patent Owner argues that Petitioner’s arguments in the Reply on “light strings” and “curtain lamp” as they relate to a single LED are improper, we do not agree. As Patent Owner acknowledges, the Petition and Dr. Schubert’s original declaration stated that a “curtain lamp” is “commonly understood to be one or more light strings.” See PO Sur-reply 12; see also Pet. 8; Ex. 1003 ¶ 37. Patent Owner did not contest Petitioner’s interpretation in its Response. See PO Resp. 15. Patent Owner did, however, argue that Kuang did not teach or suggest “light strings” in any form and therefore did not teach a “curtain lamp” under Petitioner’s definition of the same. PO Resp. 15–17. A petitioner reply may respond to arguments raised in a patent owner’s response under 35 U.S.C. § 42.23(b), and here Petitioner’s argument that a light string may have a single LED is properly presented in its Reply in response to Patent Owner’s arguments. Further, Patent Owner was not only aware that Petitioner had taken the position that a “curtain lamp” could be a single “light string,” but Patent Owner also did not dispute Petitioner’s interpretation.8 Our view, therefore, is that Petitioner’s argument that a curtain lamp may be a single LED is proper because it is corollary to Petitioner’s reply arguments on light strings. That is, Petitioner’s assertion follows from the reply arguments on light strings and the unopposed interpretation of curtain lamp as a single light string. Additionally, to the extent there could be any prejudice to Patent Owner by these light string and curtain lamp arguments, Patent Owner has had opportunities to address them by supplemental briefing.” slip op. at 32
Patent outcomesUS 8,884,546 mixedClaim construction§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 8,884,546 - Juniper Networks, Inc. v. Monarch Networking Solutions LLCSome claims unpatentablePTAB · May 5, 2025 · IPR2024-00175 · APJ Norman H Beamer · IPR · Final written decision
Claims 7, 9–11, 13, 14, 16, and 17 are unpatentable as obvious over Biswas and Kumar; the remaining challenged claims were not shown unpatentable.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedDecided for petitioner
“Pet. 14 (citing Ex. 1003 ¶¶ 62–64). Patent Owner does not dispute Petitioner’s proposal. PO Resp. 8–9. Petitioner’s proposal is consistent with the level of ordinary skill in the art as reflected by the asserted prior art. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001); GPAC, 57 F.3d at 1579. On this record, the level of ordinary skill is neither in dispute nor dispositive of any challenge. For purposes of this Decision, we apply Petitioner’s articulation.” slip op. at 10
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“Claim terms need only be construed to the extent necessary to resolve the controversy. Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017). The parties submit that no claim construction is necessary. Pet. 14; PO Resp. 15. We have not been presented with the need to construe any claim terms for this Decision. D.” slip op. at 11
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundDecided for petitioner
“We determine that Petitioner has provided sufficiently articulated reasoning with rational underpinnings for the proffered combined teachings of Biswas and Kumar. We are persuaded by Petitioner’s declarant’s testimony that one of ordinary skill would have known to use the masking techniques exemplified by Kumar to implement the disclosed operation in Biswas of edge routers providing hosts with port number ranges. Ex. 1003 ¶¶ 77, 97–101. Accordingly, we determine that Petitioner has proved by a preponderance of the evidence that one of ordinary skill in the art would have been motivated to combine Biswas and Kumar.” slip op. at 13
- Obviousness (§103) › Graham factors (scope of art, differences, level of skill)UnpatentableNot shown unpatentableMixed
“This disclosure is inconsistent with any suggestion that the Fangman system, when routing a telephone call to its destination, identifies the private IP address of the destination telephone by determining the port range to which the port number of the destination telephone belongs. When Fangman describes the NAPPT process, it does not indicate that port ranges are used, but rather repeatedly states that port numbers are used: The [service gateway] receives a data packet from the IP device, including a public destination IP address . . . a destination port number . . . and source information, NAPPTs the data packet, using the [public destination IP address] and the [destination port number] to identify the [IP telephone] . . . . Ex. 1024, code (57). Performing NAPPT on the data packet received from the destination may include using the public destination IP address and the destination port number to uniquely identify the IP telephone, and changing the public destination IP address to a private source IP address of the IP telephone while leaving the destination port number unchanged. Ex. 1024, 4:28–33. The SG 170 may maintain a table of semi-permanent mappings of the external IP address and ports to the internal hosts and ports. Ex. 1024, 8:49–51.” slip op. at 33
Patent outcomesUS 8,693,369 mixedClaim construction§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 8,693,369 - PLR Worldwide Sales Ltd. v. Flip Phone Games, Inc.Some claims unpatentablePTAB · Apr 24, 2025 · IPR2024-00209 · APJ Scott B Howard · IPR · Final written decision
Claims 1–11 and 13–19 are unpatentable as obvious over Ho and Aoki; claims 12 and 20 were not shown unpatentable over Jiau and Aoki or Jiau and Kim.
RulingsFinal written decision- Skill levelSkill level patent owner adoptedDecided for patent owner
“Patent Owner argues for a slightly different level of ordinary skill in the art: “a bachelor’s degree in electrical engineering, computer engineering, computer science, or a similar field, along with one to two years of experience developing or programming video games or video game systems, or similar types of computer systems.” PO Resp. 2 (citing Ex. 2006 ¶ 29). Patent Owner further argues that the person having ordinary skill in the art “may have additional education that might substitute for some of the experience, and additional experience might substitute for some of the educational background.” Id. (citing Ex. 2006 ¶ 29). According to Patent Owner, Petitioner’s proposal does not require experience in programming video games. Id. at 3. However, Patent Owner states, “[t]his difference does not materially affect the analysis presented below.” Id. We see very little difference between the parties’ respective proposals. We adopt Patent Owner’s marginally more specific proposal. Additionally, because we would reach the same conclusions under Petitioner’s proposal, we agree with Patent Owner that this does not affect our analysis.” slip op. at 9
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“Patent Owner argues that the plain and ordinary meaning of “downloading” excludes “real-time fetching of data by a client from a server system.” PO Resp. 34; see also PO Sur-reply 16–17; Tr. 32:22–34:7. Because we need not expressly construe any claim terms, we do not construe any terms of the ’662 patent. See Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co. Matal, 868 F.3d 1013, 1017 (Fed. Cir. 2017) (noting that “we 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 11
- Novelty / Anticipation (§102) › Prior-art status of a reference › Printed publication / public accessibilityPrinted publication establishedReference is prior artDecided for petitioner
“date of the ’662 patent, Ho is not a “printed publication” within the meaning of 35 U.S.C. § 311(b). PO Resp. 30–33; PO Sur-reply 15–16. The Federal Circuit has rejected this argument, holding that: a published patent application is, by its literal terms, a “printed publication.” So, when § 311(b) permits IPR challenges based upon “prior art . . . printed publications,” it includes within its literal scope challenges based upon a published patent application. And, by virtue of § 102(e)(1), a published patent application—this specific type of “printed publication”—is deemed prior art as of its filing date. Therefore, the plain language of §§ 311(b) and 102(e)(1) permits IPR challenges based upon published patent applications, and such published patent applications can be deemed prior art in IPRs as of their filing date. Lynk Labs, Inc. v. Samsung Elecs. Co., 125 F.4th 1120, 1127 (Fed. Cir. 2025). Thus, Petitioner asserts permissible grounds of unpatentability under 35 U.S.C. § 311(b) by arguing that claims 1–20 are unpatentable under 35 U.S.C. § 103(a) on the basis of Ho, which is a prior art printed publication, and either Aoki or Kim.” slip op. at 11
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundReasonable expectation foundDecided for petitioner
“A person having ordinary skill in the art would have combined Aoki’s teaching of using user-identification information as part of the request for an advertisement with Ho’s system, which also teaches a client device sending information to a server to request hot spot information, such as advertisements. See Ex. 1003 ¶¶ 103–107, 111, 114, 117. Because both Ho and Aoki are directed to improvements in game design and monetization from using advertisements (id. ¶ 106; Ex. 1004, 1:26–28; Ex. 1005 ¶¶ 6–8), a person having ordinary skill in the art would have looked at both Ho and Aoki and combined the relevant features with a reasonable expectation of success (Ex. 1003 ¶¶ 103, 106, 117). A person having ordinary skill in the art would have appreciated that using Aoki’s teaching of sending user-identification information with Ho, which includes sending information with a request for information relating to interactive information elements (hot spots), allows for targeted advertisements, which was a known advantage in advertising. Id. ¶ 117; Ex. 10089 ¶¶ 54–55 (describing advantages of targeted advertising).” slip op. at 26
Patent outcomesUS 9,427,662 mixedClaim construction§ 102 anticipation§ 103 obviousnesscites Phillips · KSR · GrahamPatents in suitUS 9,427,662
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.