The U.S. Court of Appeals for the Federal Circuit has weighed in once again on the elements required for patent holders to prove induced infringement, this time in a fight over online mapping technology for real estate hunters.

A Federal Circuit panel ruled Monday that a U.S. district judge in Los Angeles must reconsider a summary judgment ruling for Move Inc., which has spent nearly six years battling claims that its online real estate websites infringed a now-expired patent for zooming in on mapped properties. The plaintiff, Real Estate Alliance Ltd. — a company that develops and licenses electronic mapping technology–had appealed Judge George King’s January 2012 ruling that Move hadn’t infringed the patent, arguing that there was evidence of direct infringement.