Patent Office: TiVo’s ‘Time Warp’ Is Invalid

Patent Office: TiVo’s ‘Time Warp’ Is Invalid
The U.S. Patent and Trademark Office has ruled that TiVo’s “Time Warp” DVR patent — which is at the heart of the company’s years-long litigation against Dish Network and EchoStar — is invalid in light of two prior-art references.