PTO Designates New Precedential Opinions on Final Written Decision Estoppel and the One-Year Time Bar for IPR By Shaton C. Menzie on January 19, 2016 Email this postTweet this postLike this postShare this post on LinkedIn On Wednesday, January 13, 2016, the PTAB designated two new “precedential” decisions, providing authority on issues of estoppel stemming from a final written decision and the one-year deadline for IPR filings: Read more