On February 7, 2025, Sol IP, one of Avanci's licensors, filed two patent infringement lawsuits against Chinese automaker BYD in the First District Court of Munich.

Sol IP is understood to be a Virginia-based company that provides patent, trademark, copyright and other intellectual property rights application, maintenance, litigation support and related consulting services.

This is the first time an Avanci licensee has taken legal action against a Chinese automaker. Currently, Sol IP is only asking the court to find that the defendant BYD has infringed and state that it is entitled to damages.

The two patents in question and the related case numbers are Case No. 7 O 1597/25: EP2575281 (relating to “Carrier Aggregation in Wireless Communication Systems”) and Case No. 7 O 1583/25: EP2624516 (relating to “Method and Apparatus for Transmitting ACK/NACK”). Methods and apparatus for transmitting ACK/NACK").