The Patent Trial and Appeal Board issued 44 IPR and CBM Final Written Decisions in March, including decisions following remands from the Federal Circuit, cancelling 404 (75.23%) instituted claims while declining to cancel 116 (21.60%) instituted claims. Patent owners conceded 17 (3.17%) 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 75%.

On a per-case basis, no instituted or substitute claims survived in 22 (50%) decisions, all instituted claims survived in 8 (18.18%) decisions, and a mixed outcome occurred in 14 (31.82%) decisions. A mixed outcome occurs where at least one instituted or substitute claim remains patentable, and at least one is cancelled, in a Final Written Decision.

The overall cumulative instituted claim survival rate, broken down by technology center, is as follows:

More detailed cumulative statistics on the Board’s IPR and CBM decisions, updated through April 1, 2019, are available here on the AIA Blog.

Statistics regarding the outcome of appeals to the Federal Circuit are available here.

Lists of the top 10 PTAB judges by panel appearances and authored opinions are available here.

Numbers of final written decisions by technology center and instituted claim survival rates by technology center are available here.