Judge Profile

Stephen E. Belisle

86 IP cases indexed. Covers patent matters.

Cases Presided Over

86 cases indexed | Page 1 of 3

patent all challenged claims unpatentable · Dec 11, 2025

Meta Platforms, Inc. v.SitNet, LLC

· IPR2026-00110

Meta Platforms successfully challenged SitNet’s ’932 patent, leading the PTAB to find all ten claims unpatentable as obvious over prior‑art social‑network and advertising systems.

patent all challenged claims unpatentable · Dec 11, 2025

Meta Platforms, Inc. v.SitNet, LLC

· IPR2026-00113

Meta Platforms successfully invalidated SitNet’s ’932 patent claims covering targeted advertising in situational networks. The Board found all challenged claims (12‑21) obvious over Amidon, Walsh, Shahine, and Jones. The decision clears Meta’s path for its ad‑tech offerings.

patent all challenged claims unpatentable · Dec 11, 2025

Meta Platforms, Inc. v.SitNet, LLC

· IPR2026-00111

Meta Platforms successfully challenged SitNet’s ’932 patent, leading the PTAB to find all ten claims unpatentable as obvious over Amidon, Walsh, Shahine, and Jones.

patent all challenged claims unpatentable · Nov 25, 2025

Target Corporation v.HEADWATER RESEARCH LLC

· IPR2026-00154

The PTAB held that all 18 claims of Headwater’s ’042 patent are unpatentable, finding them obvious over a combination of prior‑art references Limont, Wright, Xu and Polson.

patent all challenged claims unpatentable · Nov 25, 2025

Target Corporation v.HEADWATER RESEARCH LLC

· IPR2026-00153

The PTAB held that claims 1‑18 of the ’042 patent are unpatentable, finding them obvious over a combination of Limont, Wright, Xu, and Polson references.

patent all challenged claims unpatentable · Nov 25, 2025

Target Corporation v.HEADWATER RESEARCH LLC

· IPR2026-00153

The PTAB issued a Final Written Decision finding all of the challenged claims of Headwater’s ’541 patent unpatentable. Google and its wireless partners successfully argued anticipation and obviousness over the Rao reference and related prior art.

patent all challenged claims unpatentable · Nov 25, 2025

Target Corporation v.HEADWATER RESEARCH LLC

· IPR2026-00154

The PTAB held that all of the challenged claims of Headwater’s ’541 patent are unpatentable, finding anticipation or obviousness over the Rao reference and, for many claims, additional references.

patent denied · Nov 4, 2025

American Airlines, Inc. et al. v.Intellectual Ventures I LLC

· IPR2025-00786

American Airlines and Southwest Airlines failed to invalidate Intellectual Ventures I LLC's patent covering virtual community networks and IP routing. The PTAB denied the petition, finding that the petitioner could not persuasively demonstrate obviousness over prior art references like Caronni-I and RFC-1383.

patent denied · Oct 31, 2025

Apple Inc. v.HBCU Messaging US LP

· IPR2026-00107

Apple’s petition to invalidate a patent was denied by the PTAB because it failed to show a reasonable likelihood of success on any of the 14 challenged claims. The Board found the obviousness arguments lacked the required particularity and rationale.

patent denied · Oct 31, 2025

Apple Inc. v.HBCU Messaging US LP

· IPR2026-00104

The PTAB denied Apple’s inter partes review petition against a load‑balancing patent, finding the obviousness arguments over Chow, Reiffin, and Kurowski insufficiently particularized. No claims were instituted or found unpatentable.

patent denied · Oct 31, 2025

Apple Inc. v.HBCU MESSAGING US LP

· IPR2026-00105

American Airlines and Southwest Airlines sought to invalidate a load‑balancing patent, alleging obviousness over three prior‑art references. The PTAB found the petition lacked the required particularity and denied institution of the IPR.

patent all challenged claims unpatentable · Oct 11, 2025

Meta Platforms, Inc. v.SitNet, LLC

· IPR2026-00112

Meta Platforms successfully challenged SitNet’s ’932 patent covering situational‑network advertising. The PTAB found all ten challenged claims (12‑21) unpatentable under 35 U.S.C. § 103, citing obviousness over Amidon, Walsh, Shahine, and Jones. The decision finalizes the institution and cancellation of the claims.

patent denied · Oct 10, 2025

American Airlines, Inc. et al. v.Intellectual Ventures II LLC

· IPR2026-00043

The PTAB denied American Airlines and Southwest Airlines’ petition to institute an IPR against Intellectual Ventures’ ’326 patent covering high‑data‑rate multi‑channel WLAN. The Board found no reasonable likelihood of success on any of the 18 challenged claims.

patent terminated or settled · Oct 7, 2025

BOE Technology Group Co., Ltd. v.Paneltouch Technologies LLC

· IPR2025-01246

BOE Technology Group and Paneltouch Technologies settled their IPR dispute over U.S. Patent 8,803,836. The Board granted a joint motion to terminate the three inter partes review proceedings and kept the settlement agreement confidential.

patent terminated or settled · Oct 7, 2025

BOE Technology Group Co., Ltd. v.Paneltouch Technologies LLC

· IPR2025-01245

BOE Technology and Paneltouch Technologies settled their dispute over three patents, leading the PTAB to terminate the related IPRs. The settlement agreement is treated as confidential business information.

patent denied · Oct 4, 2025

American Airlines, Inc. et al. v.Intellectual Ventures I LLC

· IPR2025-00785

The PTAB denied institution for American Airlines and Southwest Airlines against Intellectual Ventures I LLC, finding the petitioner failed to meet the 'reasonable likelihood' standard under 35 U.S.C. § 314(a). The Board specifically rejected the obviousness arguments concerning partitioning and descriptions limitations based on prior art references Chow, Reiffin, and Kurowski.

patent denied · Sep 5, 2025

American Airlines, Inc. et al. v.Intellectual Ventures I LLC

· IPR2025-00987

The PTAB denied the IPR petition filed by American Airlines and Southwest Airlines against Intellectual Ventures I LLC, finding that the petitioner failed to establish a reasonable likelihood of prevailing. The Board specifically rejected arguments regarding obviousness over combinations of prior art references like Lawson, Tsutsumitake, and Choquier in the dynamic routing network space.

patent terminated or settled · Aug 1, 2025

Samsung Electronics Co., Ltd et al. v.HEADWATER PARTNERS II LLC

· IPR2025-00426

Samsung and several major carriers settled their inter partes review of Headwater’s wireless patent, leading the PTAB to terminate the proceeding and keep the settlement terms confidential.

patent terminated or settled · Jul 29, 2025

Be Smarter, LLC et al. v.Yondr, Inc.

· PGR2025-00070

Be Smarter and Yondr settled their post‑grant review dispute over patent 12,133,078. The parties filed a joint motion, and the PTAB terminated the proceeding without a final written decision.

patent denied · Jul 2, 2025

Rode Microphones, LLC et al. v.Zaxcom, Inc.

· IPR2025-00557

The PTAB denied RØDE Microphones' request for rehearing of its institution denial, finding the petitioner failed to demonstrate any Board error regarding the interpretation of Strub’s genlocking technique.

patent instituted · Jun 13, 2025

ROBE lighting s.r.o. v.Guangzhou Haoyang Electronic Co., Ltd.

· IPR2025-01016

ROBE lighting s.r.o. successfully petitioned to institute IPR against Guangzhou Haoyang Electronic Co., Ltd.'s patent, alleging anticipation and obviousness regarding light fixture sealing systems. The Board found a reasonable likelihood that the '373 patent is unpatentable based on prior art reference Jurik.

patent all challenged claims unpatentable · Jun 11, 2025

Meta Platforms, Inc. v.SitNet, LLC

· IPR2026-00100

Meta Platforms successfully challenged SitNet’s ’932 patent covering targeted advertising in situational networks. The PTAB found all ten claims (12‑21) unpatentable as obvious over Amidon, Walsh, Shahine, and Jones. The decision clears Meta’s path for its ad‑tech offerings.

patent all challenged claims unpatentable · Jun 11, 2025

Meta Platforms, Inc. v.SitNet, LLC

· IPR2026-00101

Meta Platforms successfully challenged SitNet’s ’932 patent, with the PTAB finding all ten challenged claims unpatentable as obvious over Amidon, Walsh, Shahine and Jones. The Board affirmed the petitioner’s arguments and declined to construe the term “event node.”

patent mixed - some claims cancelled, some upheld · Jun 11, 2025

Meta Platforms, Inc. v.SitNet, LLC

· IPR2026-00100

Meta Platforms successfully challenged SitNet’s ’454 patent, leading the PTAB to find claims 1‑9 and 20 unpatentable and cancel claims 10‑19.

patent denied · May 24, 2025

American Airlines, Inc. et al. v.Intellectual Ventures I LLC

· IPR2025-01055

American Airlines and Southwest Airlines failed to institute their IPR against Intellectual Ventures' patent, as the Board found they could not meet the burden of proof regarding claim construction and obviousness. The denial hinged on the Petitioner’s failure to clearly articulate how it would construe key indefinite terms in its petition.

patent terminated or settled · May 8, 2025

BOE Technology Group Co., Ltd. v.Paneltouch Technologies LLC

· IPR2025-01267

BOE Technology and Paneltouch Technologies settled their inter partes review of U.S. Patent 11,126,025, leading the PTAB to terminate the proceeding and keep the settlement confidential.

patent denied · Apr 30, 2025

American Airlines, Inc. et al. v.Intellectual Ventures II LLC

· IPR2025-00931

American Airlines and Southwest Airlines failed to convince the PTAB that Intellectual Ventures' claims regarding distributed OS image management were unpatentable. The Board denied institution, finding the petitioner did not meet the reasonable likelihood standard against combinations of prior art references.

patent denied · Apr 30, 2025

American Airlines, Inc. et al. v.Intellectual Ventures II LLC

· IPR2025-00782

American Airlines and Southwest Airlines failed to convince the PTAB that their challenged claims were unpatentable. The Board denied institution because the Petitioners could not provide sufficient rational underpinning against prior art references like Bruner and Clark, particularly regarding technical limitations.

patent denied · Apr 11, 2025

Apple Inc. v.HBCU Messaging US LP

· IPR2026-00109

American Airlines and Southwest Airlines sought to invalidate a load‑balancing patent, but the PTAB denied institution, finding the obviousness arguments insufficiently specific. The petition relied on Chow, Reiffin, and Kurowski references, which the Board said did not adequately teach the claimed features.

patent terminated or settled · Feb 1, 2025

Ericsson Inc et al. v.HEADWATER PARTNERS II LLC

· IPR2025-00404

Ericsson and Nokia settled their IPR with Headwater Partners over patent 9,413,502, leading the Board to terminate the proceeding.

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