Finland company Nokia has sued American giant Apple Inc in Germany and USA courts for patent infringement.
According to Nokia, Apple is using Nokia technology in “many” products without paying for it.
The two companies had signed a licensing agreement in 2011, and since then “Apple has declined subsequent offers made by Nokia to license other of its patented inventions which are used by many of Apple’s products.
The 2011 licensing deal followed years of clashes with Apple, which has also sparred with main rival Samsung over patent claims.
At the time, Apple cut the deal to settle 46 separate complaints Nokia had lodged against it for violation of intellectual property.
The complaints, filed in three German cities and a district court in Texas, concern 32 patents for innovations related to displays, user interface, software, antennae, chipsets and video coding.
Nokia was the world’s leading mobile phone maker from 1998 until 2011 when it bet on Microsoft’s Windows mobile platform, which proved to be a flop. Analysts say the company failed to grasp the growing importance of smartphone apps compared to hardware.