AV1

KAIST/ETRI HEVC/AV1 patent revocation confirmed by EPO appeal

On May 9, 2025, the EPO's appellate board confirmed the decision to revoke EP 2627085. The EP ‘085 patent was owned by the Electronics and Telecommunications Research Institute (ETRI) and Korea Advanced Institute of Science and Technology (KAIST). The patent was related to patents that are designated essential to the Access Advance patent pool as well as SISVEL’s AV1 patent pool.

Unified was represented by Dr. Andrew McGettrick and Dr. Susan Keston at HGF Law, and by in-house counsel, Jessica L.A. Marks and Roshan Mansinghani.

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.