Apple could be liable for up to $862.4 million in damages after losing a patent lawsuit to the Wisconsin Alumni Research Foundation (WARF), which protects the University of Wisconsin’s patents and intellectual rights. A jury in Madison, Wisconsin this week “found the iPhone maker used technology owned by the University of Wisconsin-Madison’s licensing arm without permission in chips found in many of its most popular devices,” reports Reuters. Apple denied any infringement regarding its A7, A8 and A8X processors used in iPhones and iPads, and argued that the 1998 WARF patent for improving chip efficiency was invalid. Earlier this year, the U.S. Patent and Trademark Office rejected Apple’s bid to review validity of the patent.