Nintendo is protected by multiple patents under 1987-88 patents for motion in the Power Glover, 1992,93,95,97 patents for other motion inputs, 93, 97,01,05 for pointing devices. The internal tech Nintendo is using are all third party and I'm sure those companies have patents too.
Hillcrest's patents were filed in 2005.
There is also the issue that Nintendo is using the device for gaming, their patents are for multimedia and business related PC devices... there are about 200 other companies working on this tech including suppliers of Wii parts.
I would cite regulation, but I know you will simply ignore it.







