I think we've hit on this a little in different discussions in the past, but it seems to be happening more and more as time goes on. What caused me to post this was this story about MSFT suing over a broad patent it claims is infringed on by Android, and thus any device running it.
Original MSFT press release.
Now reading that, couldn't that cover nearly any mobile OS? It seems to me that MSFT created this circus tent of a patent to try and slow the development and proliferation of competing devices. And this isn't what the patent system was intended for.The issue at hand here for Microsoft stems from a patent claiming Android uses "natural ways of interacting with devices by tabbing through various screens to find the information they need; surfing the Web more quickly, and interacting with documents and e-books." -- Broad scope really but that is how patents work for better or worse.
Original MSFT press release.