Current status of patent opposition in Japan


Ryo Maruyama

The system of opposing the grant of a patent, which allows any person to file an opposition within six months from the date of publication in the Patent & Utility Model Gazette, has been in force since April 1, 2015. As of October 21, 2015, the number of oppositions filed has reached 119.

Ryo Maruyama, patent, patent opposition,