Apple Inc. vs WARF

The case was instituted in 2014, by Wisconsin Alumni Research Foundation (WARF) who manage patents for the University of Wisconsin Madison, against Apple Inc. claiming that the iPhone 5S, iPad mini with Retina Display, and iPad Air all benefit from an information processing system called the A7 processor, developed at the University of Wisconsin - Madison and patented in 1998. WARF demanded damages and an injunction to stop the sale of any product using the A7 processor until licensing payment was agreed upon. The A7 processor powers older iPhones and iPads. The technology improves battery life and the efficiency of processors by having them execute commands efficiently.

In 2015, the jury found Apple guilty of patent infringement and ordered to pay WARF $234 million as damages. Further, WARF filed a separate lawsuit against Apple over chips it uses in the iPhone 6s, iPhone 6s Plus, and iPad Pro models.