Digital Audio Patent Holder Sues SiriusXM

Defendant

DIGITAL STREAM IP, LLC has filed another patent infringement suit in U.S. District Court in DELAWARE, this time against SIRIUSXM.

As in its cases against iHEARTMEDIA, CBS RADIO, and several car manufacturers, the plaintiff is claiming that SIRIUSXM infringed upon its patent for a "Wireless Music and Data Transceiver System" that it claims covers wireless digital audio delivery and display of programming information.  The suit says that by simply using a "digital music transmitter," combining multiple streams on a single frequency, and demodulating the streams back into individual channels, SIRIUSXM infringed the patent.

UNIFIED PATENTS INC., a group that fights "patent trolls" by challenging the underlying patents, has challenged DIGITAL STREAM IP's patents as obvious, unpatentable, and/or conflicting with prior art and patents, and the Patent Trial and Appeal Board has instituted an Inter Partes review of the key DIGITAL STREAM IP patent.

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