Ihjhewitt said:
no we don't make consoles.
we make nunchuk and remote (imitations of wii) w/o any logo, in other words, neutral products. but we have to make sure if this is legal, if not ,we will stop any related production, thanks.
you need to go read up on what your rights are. This is not a simple matter of whether nintendo patented their nunchuck design (and yes they have, obviously)
From what I know, if it's patented, you can pay them the royalties for using their design as long as you give them credit and include their logo on the product. This is how a lot of 3rd party controllers come up for a lot cheaper than original. (typically another company uses the same design just with a lot cheaper parts and cost cutting to make it for cheaper)
Another option you got is you can mimic the fuction but design everything completely from scratch making sure it doesn't match any of the nintendo design (you'll have to read their patent in depth for this) Then as long as your lawyer can show that your designed is fundamentally different from nintendo's you're free to make it.
The only last thing I will have to point out for you. No matter what your nunchuck design is, as long as you plan to make it work with the wii system, you will have to use nintendo's connection media (wired or wireless), and there's no way around that.