The United States Patent and Trademark Office (PTO) "reaffirmed the validity of all claims" of TiVo's time warp patent at issue in the company's ongoing litigation with EchoStar/Dish Network, TiVo said.

This was the second reexamination of the patent at the request of EchoStar.

"This decision by the PTO is final and not appealable by EchoStar," TiVo said.

"Today's decision further validates our IP and brings us closer to ending EchoStar's ongoing infringement. Moreover, we remain confident that the United States Court of Appeals for the Federal Circuit will uphold and enforce an injunction against EchoStar's ongoing willful infringement of the time warp patent,"TiVo added.

The Wall Street Journal has this report.