On March 14, 2017, the Patent Trial and Appeal Board (PTAB) instituted an IPR petitioned by Unified on a patent owned and asserted by Digital Stream IP, LLC.  The Board instituted trial on all asserted grounds against U.S. patent 6,757,913 (relating to "Wireless music and data transceiver system").  The patent had been asserted against, inter alia, automotive companies.

The petition and more details for the entire proceeding can be found on Unified's PTAB Portal.