Nintendo has been sued by technology firm ThinkOptic for allegedly knowingly infringing on one of its patents.
The patent in question manages to make the Wii Remote sound like the dullest object in the world. It describes "electronic equipment for handheld vision based absolute pointing system".
ThinkOptic claims Nintendo knew (or should have known) ahead of time that it would be infringing on the patent with the release of the Wii.
Two other patents are also mentioned in the case, one describing a "Handheld Device for Handheld Vision Based Absolute Pointing System" and another outlining a "Handheld Vision Based Absolute Pointing System".
With the above in mind, ThinkOptic has claimed that Wii U will also infringe on its patents.
It's not been a good morning for Nintendo, particularly if rumours of troubled Wii U development prove to be true.