Nokia has filed a complaint with the U.S. International Trade Commission (ITC) alleging that Apple’s computers, iPhone and iPod infringe on seven Nokia patents. The patents in question cover technology used in devices’ user interface, camera, antenna and power management.

“This action is about protecting the results of such pioneering development,” said Paul Melin, General Manager, Patent Licensing at Nokia. “While our litigation in Delaware is about Apple’s attempt to free-ride on the back of Nokia investment in wireless standards, the ITC case filed today is about Apple’s practice of building its business on Nokia’s proprietary innovation.”

The complaint comes just two months after Nokia filed a lawsuit against Apple in a Delaware U.S. District court alleging the iPhone infringes on 10 patents that cover technologies which connect devices to wireless networks. 

Apple later countersued Nokia, claiming the cellphone maker was infringing on 13 of its patents. Apple also claimed that Nokia’s technology licensing fees exceeded industry standards.