Today, Microsoft and Open Invention Network (OIN) announced that Microsoft has become a member of the OIN community. OIN is the largest patent non-aggression community in history with over 2.600 community member companies. It’s mission is to protect core Open Source technologies from patent litigation. It shapes the norms of collaboration as Open Source becomes more industrial and the edge between free and proprietary software becomes increasingly important. Many key innovators license their patent portfolio through OIN, including Google, IBM, NEC, Philip, Red Hat, Sony, SUSE and Toyota. Until now however, one party was missing from the community that became an increasingly important contributor to Open Source technologies, and that was Microsoft. This gap closes today. I believe this is a historic moment that will encourage innovation and dramatically reduces risks for the wider Open Source community.