A patent infringement lawsuit was filed against Nintendo and Sony in the Pennsylvania Western District Court on December 27, 2007.
The lawsuit, being brought on behalf of the Copper Innovations Group, alleges that the companies have infringed upon a 1996 patent that "covers a method for connecting devices to a system and sorting their inputs by means of hardware identification numbers tied to each transmission."
Microsoft has not been named in the suit, as Sony and Nintendo are the ones using Bluetooth to connect their controllers to the PlayStation 3 and the Wii, respectively.
The plaintiff is seeking financial damages as well as an injunction to stop Sony and Nintendo from further infringing upon the patent in question.
Sony and Nintendo have not yet filed an answer to the complaint and were unavailable for comment at the time of writing.