They want Motorola to build WinMo 7 phones. They sue because, if they didn't, nobody would bother to build them.
It's Extortion 101. You beat up one store-owner of the street so you don't have to beat up all of them. Nobody wants to be the second to be beaten up. You probably can't beat up all of them and that would serve no purpose.
I am surprised phone manufacturers - since they cross-license tech all the time - don't create a common defense fund for taking down there lawsuits.
Motorola still ships WinMo devices, but the only market that still needs them is industry. In NYC, traffic cops carry them, and I know that several food delivery companies use them. Between this patent suit and the late to the party Windows Phone 7, I hope Microsoft finally dies in the mobile phone space.
Which makes their move even more despicable. Instead of going to the source they attack a small player. Microsoft was supposed to be rising above this now.
The best part, Motorola has a bunch of patents of their own. This will be interesting to see unfold.
Don't think so, if they decided to sue it's because Motorola refused such agreement and because they believe they have a pretty strong case against MS patents.