In the 44 Final Written Decisions issued by the Patent Trial and Appeal Board in October, the Board cancelled 469 (79.49%) of the instituted claims and declined to cancel 118 (20%) of the instituted claims.  A patent owner conceded 3 (0.51%) of the instituted claims by filing a disclaimer.

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On a per-case basis, no instituted or substitute claims survived in 30 (68.18%) of the decisions, all instituted claims survived in 8 (18.18%) of the decisions, and a mixed outcome occurred in 6 (13.64%) of the 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.

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More detailed cumulative statistics on the Board’s IPR and CBM decisions, updated through November 1, 2015, are available here on the AIA Blog.

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

Numbers of final written decisions by technology center are available here.