SAN JOSE — TiVo Inc. filed a patent infringement lawsuit against EchoStar Communications Corp., claiming its Time Warp patent was violated.
The suit was filed in federal district court in Texas.
In a press release Monday, TiVo said inventions protected by the Time Warp patent include a method for recording one program while playing back another and watching a program as it is recording.
A spokesman for EchoStar, a major satellite television broadcaster, said the company hasn't received the lawsuit and couldn't comment on it.
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The Time Warp patent was issued to TiVo in May 2001. TiVo filed the patent with the U.S. Patent and Trademark Office in July 1998.