Comment by tracker1

Yeah, but when MS used their own MIT-like license with patent grant and nuclear patent option, people hated it. They have made certain guarantees in the past wrt ASP.Net bits and other areas... MS seems to have been mostly in favor of live and let live wrt patents on their open-source software, it would be a colossal mistake for them to sue over patent use on their open-source software, short of defensively against someone suing them over patents.