Television set-top box maker TiVo Inc. won an federal appeals court ruling expected to force Dish Network and EchoStar corporations to pay at least $300 million in damages for a patent violation.

A three-judge panel from the U.S. Court of Appeals for the Federal Circuit, in Washington, D.C., sided with Alviso, Calif.-based TiVo in a 2-1 decision on Thursday.

The appeals court ruling may not the end the six-year legal battle.

Dish Network and its sister company EchoStar expect to ask the federal circuit’s full panel of judges to review the decision.

“We also will be proposing a new design-around to the district court for approval,” the companies said in a joint statement. “At this time, our DVR customers are not impacted.”

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