The world's leading mobile phone maker Nokia said Tuesday it was filing a fresh complaint against Apple for patent infringement in "virtually all" of Apple's devices.
The new complaint, coupled with a simultaneous lawsuit, comes days after Nokia had a previous claim rejected.
"Nokia has filed a further complaint with the United States International Trade Commission (ITC) alleging that Apple infringes additional Nokia patents in virtually all of its mobile phones, portable music players, tablets and computers," the company said in a statement.
The Finnish mobile giant claims Apple is using Nokia innovations in "key features" of its products.
Tuesday's complaint brings the number of Nokia patents in suit against Apple to 46.
"Apple has been building its business on the back of our innovations and has failed to recognise its obligations," Nokia spokesman Mark Durrant told AFP.