Does Gates Believe in Intellectual Property Protection?

Freedom to Tinker asks whether Bill Gates now believes in sharing intellectual property, following the decision of the Gates Foundation to require researchers to pool their results.

It is worth emphasizing that the Gates Foundation is a completely separate organization from Microsoft. 

My guess, for what it is worth, is that he sees these as completely different types of problem.  Windows and Office are just software; an AIDS vaccine would save lives.  But it does make you wonder how he reconciles these different approaches in his own mind.
See also On the Commons