Apple Inc. may have to pay up to $862 million in damages after being found guilty of using technology owned by the University of Wisconsin-Madison without their consent.

A report from Reuters states that the University accused the tech giant of infringing on its 1998 patent for improving microchip efficiency. The article reads:

Cupertino, California-based Apple denied any infringement and argued the patent is invalid, according to court papers. Apple previously tried to convince the U.S. Patent and Trademark Office to review the patent's validity, but in April the agency rejected the bid. 

According to a recent ruling by U.S. District Judge William Conley, who is presiding over the case, Apple could be liable for up to $862.4 million in damages.

The hardware under scrutiny were Apple's A7, A8, and A8X processors, which are used in the iPhone 5, 6, 6 Plus, as well as multiple iterations of the company's iPad tablet.

Now that the jury has decided that Apple used the university's technology in its products, the next step is to determine how much damages are owed. After that, a succeeding trial phase will determine whether Apple willfully infringed on the patent, which could increase their legal bill even more.

The report also says that the university isn't backing down and has launched a second suit aimed at the more recent A9 and A9X chips found in Apple's latest devices: the iPhone 6S, 6S Plus, and iPad Pro.

Representatives for the Wisconsin Alumni Research Foundation (WARF) and Apple could not immediately be reached for comment.

This isn't the only legal trouble to befall Apple this year. In February, the company was ordered to pay $533 million after a Texas jury found that its iTunes music platform infringed on three patents belonging to licensing firm Smartflash LLC.