Personally, no, I don't see that a patent is so important that I should break not only the law, but also the trust and confidence other people have in me, simply to defend my rights to some obvious "invention". I may be a little behind the times here, but I can't say I would be overly tempted, no.
Not to mention that when it comes to a fight between you and Microsoft, you're going to lose. Not smart. (If the allegations are true, that is).