http://www.eweek.com/article2/0,1759,2151908,00.asp
In an interview with Reuters, Szulik declined to say whether his
company is now in negotiations with Microsoft over signing such a
patent agreement.
"I can't answer the question," he said.
I don't see how this is on topic in this. At any rate Red Hat has
already clarified it's position on both the interoperability and patent
fronts several times now.