Nokia has accused Apple of violating seven more patents with the iPhone, continuing an epic patent dispute that dates back to 2009.
"Our latest ITC filing means we now have 46 Nokia patents in suit against Apple, many filed more than 10 years before Apple made its first iPhone," said Paul Melin, vice president of intellectual property at Nokia, in a March 29 statement that also accused Apple of violating Nokia patents in "virtually all products."
On Tuesday Nokia added seven patent infringement claims to the lawsuit, related to proprietary multi-tasking operating systems, data synchronization, positioning, call quality and the use of Bluetooth accessories, Nokia said in a statement.
Over the weekend a U.S. trade panel judge sided with Apple regarding five patents that Nokia claimed Apple had violated.
The patent dispute between Nokia, which is struggling to retain its grip as the world's largest mobile manufacturer, and Apple, the world's largest mobile manufacturer by revenue, began in October 2009. That's when Nokia first accused Apple of infringing on 10 patents in the Apple iPhone, related to GSM, UMTS, and local area network standards.
Apple countersued in December 2009, alleging Nokia violated 13 of its patents, none of which were disclosed. Later that month Nokia expanded its patent-infringement claims to Europe. Overall Nokia has filed cases against Apple in Delaware, the UK High Court in London, and the District Court of the Hague in the Netherlands.
Just before this year's Mobile World Congress, Microsoft and Nokia announced a reported $1 billion deal whereby Nokia would use Windows Phone 7 in upcoming devices.