An appeals court just reversed the 2015 decision against Apple made in a patent-infringement lawsuit brought by the University of Wisconsin-Madison.

The original court ruled that the iPhone-maker owed the university $234 million for infringing on patented microchip technology in the iPhone and iPad.

Apple has been ordered to pay $506 million in damages after infringing a patent owned by the University of Wisconsin-Madison.

A U.S. judge ruled that the Cupertino company was guilty of using processor technology it did not own in its A-series chips for iPhone and iPad. The sum of damages is more than double that awarded by a jury last October.

Apple may face $862 million in damages for allegedly infringing on a patent owned by the University of Wisconsin-Madison’s patent-licensing wing, the Wisconsin Alumni Research Foundation.

The Apple technologies that take advantage of said patent for increased processor efficiency? None other than the A7, A8 and A8X chips, which are found in the iPhone 5s, 6 and 6 Plus handsets, as well as several iPad models.

Uh-oh.