Apple scores a partial win over FaceTime patent troll VirnetX

In what is a partial win for Apple, a US appeals court has voided a previous ruling that meant it would have to hand over $503 million to licensing firm VirnetX. The proceedings have been going on for a decade now, and they show little sign of coming to a close.

A previous ruling by a Texas jury said that Apple infringed upon two VirnetX patents relating to communication methods like FaceTime. The US Court of Appeals for the Federal Circuilt has left that ruling in place, but has reversed two more. That means that the case will now be returned to Texas for a judement. It's now up to the Texas judge to decide what happens next according to Reuters. The judge will now have to work out exactly how much Apple needs to pay.

The Texas judge must consider whether to hold a new damages-only trial or to recalculate damages without holding one, the appeals court said.

Reuters also notes that VirnetX stock fell more than 50% once the ruling was made public, something that is presumably a hazard of the job when your sole business is to horde patents and then sue companies who infringe upon them. VirtnetX doesn't produce anything that makes use of those patents.

VirnetX and Apple have been fighting over patents since 2010 in rollercoaster litigation that has triggered wild swings in the technology licensing company's stock price.

Ten years and counting.