Preemptive Round Of Lawsuits Targets V-Chip Patent Holder

Law360, New York (September 20, 2005, 12:00 AM EDT) -- Sony, Mitsubishi and other consumer electronics makers have filed preemptive complaints against V-chip patent holder Guardian Media Technology Inc., seeking declaratory judgment of non-infringement.

The companies sued Guardian in the U.S. District Court for the Southern District of California after receiving written notice of infringement and a request for licensing in August. Guardian sent similar letters to the same companies four years earlier, but failed to take additional action after the companies denied infringement in 2000.

In addition to California-based Mitsubishi Electric and Sony Electronics Inc.,...
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