Number of Court Judgments in Revocation Actions against Trial/Appeal Decisions in 2017.

(Ex-parte appeal)
Dismissal of action: 42 Revocation of decision:8
(Inter-partes appeal)
Dismissal of action: 58 Revocation of decision:36

It is challenging to revocate the decision in case of ex-parte appeal (KSI).

Source JPO (Japanese)

JPO announced the status of processing oppositions to grant of patent from the introduction of the post grant opposition in April, 2015 to the end of 2017. The revocation rate is 6.5% and the cases in which the claims are corrected is 31.1%.

Source JPO