If you are going to predict any major actor right now of aggressively and offensively suing people into oblivion, Apple would be the obvious target of that accusation and not Microsoft.
Microsoft has enough business vested all over the place. They don't need mobile to profit. Apple's only real source of income however, is now reduced to iOS-devices only. They need mobile, desperately.
The fact that Apple is already suing left and right, right now, when their platform is going well and they technically shouldn't need to be in any state of despair, that should tell you who to fear the most.
Microsoft has enough business vested all over the place. They don't need mobile to profit. Apple's only real source of income however, is now reduced to iOS-devices only. They need mobile, desperately.
The fact that Apple is already suing left and right, right now, when their platform is going well and they technically shouldn't need to be in any state of despair, that should tell you who to fear the most.