First saw this on Kotaku.
He has a patent in both the US and Japan for a system that allows you to view 3D images with the naked eye (and is an active engineer that worked for Sony for over 30 years before retiring to live his life as an inventor, has 70 patents to his name, and has applications for over 100 worldwide.
Oh, and his patent was issued in 1999.
So... he might actually have a legitimate case. Especially since third-party organizations had already licensed his technology before the 3DS came out, and neither Nintendo company (US or Japan) have licenses.
Will be very interesting to see where this goes. When these things come up, it is usually for technologies that only BARELY apply to the product and are, in themselves, extremely vague. But this is by someone who has a name in the industry and has a patent for working technology, not just an idea, and a precedent for licensing.