Judge Profile

Stephen E. Belisle

86 IP cases indexed. Covers patent matters.

Cases Presided Over

86 cases indexed | Page 3 of 3

patent denied

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

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 all challenged claims unpatentable

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

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 all challenged claims unpatentable

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 denied

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 all challenged claims unpatentable

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 terminated or settled

Simpson Strong-Tie Company Inc. et al. v.Columbia Insurance Company et al.

· PGR2024-00050

Simpson Strong‑Tie and Columbia Insurance reached a confidential settlement, prompting the PTAB to terminate the post‑grant review of patent 11,920,339. The Board granted the joint motion to keep the settlement confidential and end the proceeding.

patent all challenged claims unpatentable

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

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 mixed - some claims cancelled, some upheld

Simpson Strong-Tie Company Inc. et al. v.Columbia Insurance Company et al.

· PGR2024-00050

The PTAB found 103 of the 105 claims of Simpson Strong‑Tie’s fire‑wall hanger patent unpatentable as obvious over a combination of Yamaguchi, Bundy, Adams and Gilb ’416 references. Claims 38 and 91 were left intact. The Board adopted petitioner‑proposed claim constructions.

patent instituted

Samsung Electronics Co., Ltd. et al. v.Headwater Research LLC

· IPR2024-01337

The PTAB institution decision allows Samsung Electronics Co., Ltd. to challenge 30 claims of U.S. Patent No. 8,588,110 B2 based on obviousness (35 U.S.C. § 103). The Board adopted the Petitioner's view of the level of ordinary skill in the art and conducted claim construction for key 'means for' limitations. This sets the stage for a full IPR review against Headwater Research LLC.

patent denied

Roku, Inc. v.Dolby International AB

· IPR2024-01354

Roku, Inc.'s IPR challenge against Dolby International AB's audio signal coding patents was denied by the PTAB. The Board found that Roku failed to establish a reasonable likelihood of prevailing on any obviousness grounds (35 U.S.C. § 103).

patent denied

MediaTek, Inc. et al. v.Redstone Logics LLC

· IPR2025-00085

The PTAB denied institution for an IPR challenge against Redstone Logics LLC's patent, finding that the petitioner failed to demonstrate a reasonable likelihood of prevailing on obviousness grounds. The dispute centered on multi-core processor design and clock ratio controllers.

patent instituted

Google LLC v.BrodTi Inc.

· IPR2025-00472

Google LLC successfully secured the institution of its IPR against BrodTi Inc.'s patent (11416898), challenging claims 1-20. The Board found a reasonable likelihood that the claims are obvious over combinations of prior art, including Nicholas and Laidlaw.

patent denied

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

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

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

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 instituted

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 instituted

Good Sportsman Marketing, LLC v.--

· PGR2024-00034

Good Sportsman Marketing challenged Hangzhou ZH Tech's patent (11736855) in PGR, alleging obviousness and indefiniteness across 19 claims. The Board instituted the petition, finding a likelihood that at least one claim is unpatentable based on prior art combinations.

patent instituted

Simpson Strong-Tie Company Inc. et al. v.Columbia Insurance Company et al.

· PGR2024-00050

The PTAB decided to institute PGR proceedings, finding that the Petitioner successfully overcame arguments of Examiner error regarding prior art combinations and claim construction issues. The dispute centers on fire-resistant wall assemblies and truss hangers, with the Board issuing preliminary determinations on key terms like 'planar extension plate' and 'bounding.'

patent terminated or settled

Hecht, Thomas v.Carver Edison, Inc.

· IPR2024-01135

The petitioner and Carver Edison, Inc. settled their inter partes review before trial, resulting in a joint motion to dismiss and termination of the proceeding. The Board granted confidentiality for the settlement agreement.

patent terminated or settled

Roku, Inc. v.VideoLabs, Inc.

· IPR2025-00072

Roku and VideoLabs settled their inter partes review dispute over U.S. Patent 7,233,790, leading the PTAB to terminate the proceeding before institution.

patent terminated or settled

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.

patent denied

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.

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