TiVo Inc. saw its shares soar about 29 percent Thursday after the company said it won a patent-infringement lawsuit against EchoStar Communications Corp.

Alviso-based TiVo said the U.S. Court of Appeals for the Federal Circuit in Washington, D.C., affirmed a ruling by the U.S. District Court for the Eastern District of Texas, which had called for about $74 million in damages.

TiVo had sued EchoStar in 2004, alleging that the latter's digital video recorders infringed on TiVo's "time warp" technology.

In November, the U.S. Patent and Trademark Office re-examined the patent TiVo holds on its digital video recorder and said the company's patent is valid.

The re-examination was made at the request of Englewood, Colo.-based EchoStar, which was sued by TiVo in 2004.