Nokia has filed claims against HTC, RIM and ViewSonic in the US and Germany claiming that the rival manufacturers are infringing its patents.
In total, 45 patents are in suit in one or more of the actions. The Finnish manufacturer said the patents relate to the likes of data retrieval on mobile devices, dynamic menus, power management, and the enhancement of software features like app stores and multitasking.
Nokia chief legal officer Louise Pentland said: 'Though we'd prefer to avoid litigation, Nokia had to file these actions to end the unauthorised use of our proprietary innovations and technologies, which have not been widely licensed.'
She added: 'Many of these inventions are fundamental to Nokia products. We'd rather that other companies respect our intellectual property and compete using their own innovations, but as these actions show, we will not tolerate the unauthorised use of our inventions.'
An HTC spokesperson told Mobile: 'HTC has been a licensee of Nokia on wireless essential patents since 2003. We are waiting to receive a complaint and won't have any comments until our legal team has received and reviewed it.' RIM refused to comment and ViewSonic was unavailable.
Editor: Graeme Neill