I doubt it will go far. I mean, the Wii is doing great, and Nintendo is investing a lot of money on the console, games and developers. They wouldn't be stupid to say "OK, the console will be retired". I will be really surprised if Nintendo gives in, but with the power they have behind them it will not happen.
Nintendo DID mention way before the Revolution was still a secret that the new technology wasn't all that new, but that it would be the first time someone has implemented it on a new console. Plus, I remember some computer mouses that also had point and click features. And motion sensing had already been implemented on some arcade games.
Looks like the Regginator may be working extra hours in the week...
EDIT: The more I think about it, the more I believe that this lawsuit is a joke...
I mean, the Wiimote goes BEYOND pointing and clicking. It had many features that puts it above the original pointing device.
Nintendo should show off the blue prints of the wiimote as well as show off the controls in court. That should end the case right there.
That and have Reggie defend the Wii...