Nokia's lawsuits, filed in courts in Dusseldorf, Mannheim and Munich, Germany, and the U.S. District Court for the Eastern District of Texas, cover patents for displays, user interfaces, software, antennas, chipsets and video coding.
"Since agreeing a license covering some patents from the Nokia Technologies portfolio in 2011, Apple has declined subsequent offers made by Nokia to license other of its patented inventions which are used by many of Apple's products," Nokia said in a statement.
Apple on Tuesday had taken legal action against Acacia Research Corp
Apple, Acacia and Conversant did not immediately respond to requests for comment, and Nokia was not immediately available to comment on the Apple lawsuit.
The legal action by Nokia and Apple appear to mark a revival of the "smartphone patent wars" that began five years ago, when Apple filed a series of patent infringement cases against Samsung Electronics <005930.KS> around the world, with wins and losses on both sides.
Apple's lawsuit against Acacia, Conversant and Nokia was filed only one day after Ottawa-based Conversant named Boris Teksler as its new chief executive. He had worked as Apple's director of patent licensing and strategy from 2009 to 2013, the latter half of his tenure overlapping with the lawsuits against Samsung.
Acacia is a publicly traded patent licensing firm based in Newport Beach, California. One of its subsidiaries sued Apple for patent infringement and was awarded $22 million by a Texas jury in September.
Similarly, Conversant, which claims to own thousands of patents, announced last week that a Silicon Valley jury had awarded one of its units a $7.3 million settlement in an infringement case against Apple involving two smartphone patents.
Nokia, once the world's dominant cellphone maker, missed out on the transition to smartphones triggered by Apple's introduction of the iPhone in 2007.
The Finnish company sold its handset business to Microsoft Corp
But this year, Microsoft sold its Nokia-feature phone business to a new company called HMD Global.
Nokia agreed to a 10-year licensing deal with HMD, which continues to market low-cost Nokia phones and plans to introduce new Nokia smartphone models next year.- Reuters
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