A federal appeals court on Friday granted Dish Network Corp. a rare, full-court review of a ruling it had earlier lost to TiVo Inc., one that could have resulted in the satellite TV company disabling millions of digital video recorders.

Instead, the U.S. Court of Appeals for the Federal Circuit in Washington breathed new life into litigation that Dish has consistently lost to TiVo. Dish's decision to seek an "en banc" review was seen as CEO Charlie Ergen's last straw effort as damages mounted. Ergen had even believed that the appeals court was unlikely to grant it.

Shares of DVR pioneer TiVo fell by $6.52, or 37.5 percent, to $10.87 in midday trading. Dish rose by $1.22, or 5.6 percent, to $23.18.

But it's uncertain whether Dish will have eventual victory given that TiVo has prevailed in a series of other court rulings.

TiVo sued Dish in 2004 for patent infringement over a technology that stored and retrieved video on DVRs, which lets viewers pause, rewind and replay live TV. Dish lost the case on appeal, paid TiVo $104.6 million in damages and interest and was barred from using the technology.