Fox Broadcasting Co. has sued Dish Network, becoming the first television network to fire a legal salvo over the satellite company's controversial new ad-skipping device called AutoHop.
Dish, meanwhile, filed its own lawsuit, which asks a federal judge to declare that AutoHop violates no copyright laws. Dish sued not only Fox, but also CBS, Walt Disney-owned ABC, and Comcast Corp. controlled-NBC.
The television industry is grappling with new technologies that threaten to undercut the billions of dollars a year that the networks collect from advertisers to run 30- to 60-second television...