This will be Apple’s second appeal in this case, with damages continuing to pile up.
U.S. District Judge Judge William Conley has ordered Apple Inc to pay $506 million for infringing on a patent owned by the University of Wisconsin-Madison’s patent licensing arm.
The ruling has doubled the damages that was initially imposed on Cupertino by a jury.
In her ruling District Judge William Conley ordered Apple to pay $272 million in addition to the $234 million jury verdict the Wisconsin Alumni Research Foundation (WARF) had won against the software giant in October 2015.
Conley stated WARF is owed additional damages in addition to interest since Apple has continued to infringe on its patent which expired in December 2016.
WARF’s patent relates to computer processor technology.
According to papers filed in court, Apple has appealed on Conley’s ruling.
A spokesman for Apple did not immediately return a request for comment.
In 2014, WARF had sued Apple alleging that processors it used in some versions of the iPhone infringe on its patent “predictor circuit,” which improves processor performance by predicting what instructions a user will give the system.
Gurindar Sohi and three of his students from the University of Wisconsin’s computer science division had obtained the patent in 1998.
California-based Apple had denied any infringement on the patent during a 2015 jury trial and had argued that the patent is invalid.
Apple also urged the U.S. Patent and Trademark Office to review the patent’s validity but the agency rejected that bid.
In 2015, WARF had again brought a separate lawsuit against Apple alleging that its chips in later iterations of its flagship smartphone continue to infringe on the same patent.
Conley said he would not rule in that case until Apple has had an opportunity to appeal the 2015 jury verdict.