InterDigital AV1/VP9 patent challenge instituted

On March 13, 2025, less than three weeks after Unified filed an ex parte reexamination, the Central Reexamination Unit (CRU) granted Unified’s request, finding substantial new questions of patentability on all challenged claims of U.S. Patent 10,080,024, owned by InterDigital VC Holdings. The '024 patent is directed to increasing video encoding efficiency by dividing a block of pixels into groups and using different intra-planar prediction methods for each group. The patent had previously been designated as essential to SISVEL’s AV1 and VP9 patent pools. The reexamination was filed as part of Unified’s ongoing efforts in the SEP Video Codec Zone.

View district court litigations by InterDigital. Unified is represented by Jon Bowser and Dagim Tilahun at Haynes Boone, and by in-house counsel, Jessica L.A. Marks and Michelle Aspen.

To view the reexamination request, visit Unified’s Portal: https://portal.unifiedpatents.com/exparte/90019865

Another InterDigital AV1 patent challenged

On February 26, 2025, Unified Patents filed an ex parte reexamination proceeding against U.S. Patent 10,080,024, owned by InterDigital VC Holdings. The '024 patent is directed to increasing video encoding efficiency by dividing a block of pixels into groups and using different intra-planar prediction methods for each group. The patent had previously been designated as essential to SISVEL’s AV1 and VP9 patent pools. The reexamination was filed as part of Unified’s ongoing efforts in the SEP Video Codec Zone.

View district court litigations by InterDigital. Unified is represented by Jon Bowser and Dagim Tilahun at Haynes Boone, and by in-house counsel, Jessica L.A. Marks and Michelle Aspen.

Dolby HEVC/AV1 patent affirmed invalid in China

On July 31, 2024, the Beijing Intellectual Property Court (BIPC) confirmed that all claims of Chinese patent CN102256122 were invalid. The CN’122 patent is owned by Dolby International. The claims were initially found invalid by the China National Intellectual Property Administration, but Dolby appealed to the BIPC. CN102256122 was purportedly essential or related to patents purportedly essential to the Access Advance patent pool and SISVEL’s AV1 and VP9 pools.

Unified was represented by Weichixue Law Firm for the appeal, and the case was managed by in-house counsel, Jessica L.A. Marks.

InterDigital AV1 patent held invalid after appeal in China

The Beijing Intellectual Property Court confirmed the invalidity of all challenged claims of CN101491099, owned by Interdigital. The CN’099 patent was previously deemed essential in the SISVEL’s VP9 and AV1 pools.

Unified was represented by Tao Chen, Yu Yan, and Peter Zhang of the Beijing Wei Chixue Law Firm, and the case was managed by in-house counsel, Jessica L.A. Marks and Roshan Mansinghani.

Two Chinese ETRI video codec patents held invalid

The Beijing Intellectual Property Court found all claims of two Chinese patents, CN103384333B and CN104219523B, invalid after the patent owner, Electronics and Telecommunications Research Institute (ETRI), filed an appeal. The CN’333 and CN’523 patents are related to patents that are designated essential to the Access Advance (formerly known as HEVC Advance) patent pool as well as SISVEL’s AV1 and VP9 patent pools.

Unified is represented by Tao Chen, Yu Yan, and Peter Zhang at Wei Chixue Law Firm, and the case is managed by in-house counsel, Jessica L.A. Marks and Roshan Mansinghani.