Apple has been ordered to pay $506 million for infringing on a patent owned by the University of Wisconsin-Madison, double the damages initially imposed by the jury in the case, Reuters reports. Despite facing up to $862 million in damages for improperly using the university’s patents in its A7, A8 and A8X processors, a jury awarded the school’s patent licensing arm $234 million after U.S. District Judge William Conley limited the damages, ruling that Apple had not willfully infringed on the university’s patent. On Monday Conley added another $272 million to the award, saying that the Wisconsin Alumni Research Foundation was owed the additional money and interest because Apple has continued to infringe on the patent until it expired at the end of last year. Apple has filed to appeal the ruling, but didn’t comment publicly about the case.