Hugh Pickens writes "Cnet reports that the ongoing patent battle between Apple and Nokia has escalated, with Apple moving to block imports of Nokia cell phones to the US by filing a complaint with the International Trade Commission, an independent federal agency that examines issues including unfair trade practices involving patent, trademark, and copyright infringement. In December, Nokia filed its own complaint with the USITC alleging that Apple infringes seven Nokia patents 'in virtually all of its mobile phones, portable music players, and computers' and sought to ban imports of Apple's iPhone, iPod, and MacBook products. Responding to Apple's latest move, Nokia spokesman Mark Durrant told Bloomberg that 'Nokia will study the complaint when it is received and continue to defend itself vigorously. However this does not alter the fact that Apple has failed to agree appropriate terms for using Nokia technology and has been seeking a free ride on Nokia's innovation since it shipped the first iPhone in 2007.' An ITC investigation is a lengthy process, but it's possible that Apple and Nokia might reach some sort of settlement as suits continue to escalate between the two companies."