Nokia is suing Apple for allegedly infringing patents in “virtually all of its mobile phones, portable music players, tablets and computers,” company officials said in a statement this week.

The seven Nokia patents in the new complaint relate to Nokia’s so-called pioneering innovations that are now being used by Apple “to create key features in its products in the areas of multi-tasking operating systems, data synchronization, positioning, call quality and the use of Bluetooth accessories,” according to a statement issued by the Finnish company on March 29.

The latest complaint is the latest in a string of lawsuits by Nokia and comes as the world's largest handset maker struggles to keep up with smartphone rivals like Apple, the Associated Press reported.

This second ITC complaint follows the initial determination in Nokia's earlier ITC filing, which company officials said they do not agree with. The ITC's initial determination said there was no violation of Section 337 in that complaint and is waiting to see the full details of the ruling before deciding on the next steps in that case.

“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, intellectual property at Nokia. “Nokia is a leading innovator in technologies needed to build great mobile products and Apple must stop building its products using Nokia's proprietary innovation.”

As the AP reported, last year, Nokia also sued Apple in Britain, Germany and the Netherlands for allegedly infringing its patents with technology used in the iPhone, iPad and iPod Touch. They followed earlier lawsuits by Nokia claiming that a broad collection of Apple products violate its patents; Apple had earlier responded with its own infringement claims against Nokia.

Nokia stock was down slightly at euro6.14 ($8.62) in afternoon trading Tuesday in Helsinki.