Apple may face up to $862 million in damages after a U.S. jury found the company guilty of infringing on a patent owned by the University of Wisconsin-Madison, Reuters reports. Apple argued that the 1998 patent — which improves processor efficiency — was invalid, but the jury upheld the patent and found that Apple’s A7, A8 and A8X processors infringed upon technology developed by the university. U.S. District Judge William Conley, who is…