The passage of the American Invents Act brought with it a new and important and highly effective weapon, inter partes review, with which to challenge the validity of issued U.S. patents. Now, with over two years of proceedings to look back on and learn from, we can understand the best practices and pitfalls of these Patent Office proceedings. Join Michael J, Kasdan, a partner at Wiggin and Dana LLP, as he provides an overview of inter partes review, covers the ins and outs of using it as a strategy, either independent from, or in parallel with, litigation, as a tool to invalidate asserted patents, and shares lessons learned and best practices.