A worker at Google in Shanghai walks near their reception desk in their Shanghai. Google Inc may pull out of China because of censorship and cyber attacks on rights activists.
"Nokia and Microsoft are colluding to raise the costs of mobile devices for consumers, creating patent trolls that side-step promises both companies have made," the Internet search leader said in a statement, adding that the complaint was filed "recently."
"They should be held accountable, and we hope our complaint spurs others to look into these practices."
Nokia was not immediately available for comment. A Microsoft representative said the company had not seen the complaint, and declined comment.