ETRI video codec patent revocation remains in place

On October 13, 2025, the Electronics and Telecommunications Research Institute (ETRI) withdrew their appeal of the EPO decision to revoke EP 3767952, canceling the hearing scheduled for November 11, 2025. Thus, the EP '952 stands revoked in its entirety. The EP ‘952 patent relates to an apparatus for encoding image data and an apparatus for decoding image data, where the encoding/decoding makes use of motion vector coding for image compression, particularly an inter prediction method. It is related to patents that have been designated essential to the Access Advance patent pool and has also been identified as potentially essential to the Versatile Video Coding (VVC) standard.

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

Dolby VVC patent revocation confirmed by EPO appeal

On July 7, 2025, the EPO Board of Appeals confirmed the decision to revoke all claims of EP 3675491, owned by Dolby International AB. EP ‘491 generally relates to video coding techniques that use data hiding to decrease bandwidth. The patent is related to patents that are designated essential to the Access Advance patent pool and has also been identified as potentially essential to the Versatile Video Coding (VVC) standard.

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.

Dolby HEVC patent revocation confirmed by EPO appeal

On July 7, 2025, the EPO Board of Appeals confirmed the decision to revoke all claims of EP 3694209 B1, owned by Dolby International AB. EP ‘209 generally relates to video coding techniques that use data hiding to decrease bandwidth. The patent is related to others that have been designated essential to the Access Advance (HEVC) pool. EP ’209 has also been identified as potentially essential to the Versatile Video Coding (VVC) standard. This filing is a part of Unified’s ongoing efforts in its SEP Video Codec Zone.

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.

Causam Enterprises power management patent affirmed invalid by Federal Circuit

On September 5, 2025, the Federal Circuit affirmed the PTAB’s final decision, in a summary Rule 36 affirmance, confirming that the challenged claims (1-3, 5, 6, 8, 9, 11, 13-15, and 17) of U.S. Patent 10,396,592 were unpatentable. The ‘592 patent is owned by Causam Enterprises, Inc., an NPE. The ’592 patent relates to active load management systems and has been asserted in district court and the ITC against Ecobee, Resideo, Alarm.com, Xylem, and Itron.

View district court litigations by Causam Enterprises. To read the petition and view the case record, see Unified’s Portal. Unified was represented by in-house counsel, Jordan Rossen, and Michelle Aspen. Laura Vu at Haynes and Boone handled the Federal Circuit argument.

Two Xylene video codec patents (in Sisvel's and Access Advance's pools) revocations confirmed in Japan

The Japan Intellectual Property High Court has affirmed the revocations of two patents, JP6768017 and JP6768110, owned by Xylene. The two patents are related to patents purportedly essential to HEVC Advance patent pool and SISVEL’s VP9 and AV1 patent pools.

Unified was represented by Ace-ai IP Law Firm in Japan, and by in-house counsel, Jessica L.A. Marks.