May was a relatively good month for patent owners at the PTAB. The Patent Trial and Appeal Board issued 49 IPR and CBM Final Written Decisions, including decisions following remands from the Federal Circuit, cancelling 475 (67.95%) instituted claims while declining to cancel 224 (32.05%) instituted claims. Patent owners did not concede any claims through motions to amend or disclaimer in cases reaching a final decision. For comparison, the cumulative average rate of instituted claims cancelled in IPR and CBM Final Written Decisions is about 74%.