Through May 31, 2020, the Federal Circuit decided 740 PTAB
appeals from IPRs and CBMs. The Federal Circuit affirmed the
PTAB on every issue in 541 (73.11%) cases and reversed or vacated
the PTAB on every issue in 101 (13.65%) cases. A mixed
outcome on appeal, where at least one issue was affirmed and at
least one issue was vacated or reversed, occurred in 70 (9.46%)
cases.

The court also dismissed 28 (3.78%) appeals without rendering a
decision on the merits. Dismissals may occur, for example,
where the Federal Circuit determines that it does not have
jurisdiction to hear an appeal, such as in certain appeals from
PTAB institution decisions.

Breaking down the numbers further, in its appeals from IPRs, the
Federal Circuit affirmed the PTAB on every issue in 505 (72.87%)
cases, reversed or vacated the PTAB on every issue in 97 (14%)
cases, issued a mixed outcome in 67 (9.67%) cases, and dismissed 24
(3.46%) cases.