National Patent Application in Japan

Q. Is it possible to file a patent application in Japan with an English specification?

A.  A valid filing date in Japan can be obtained by filing English versions of a specification (including claims and description), an abstract and drawings (if any) together with a duly filled-out application form (in Japanese language).  However, Japanese translations of the English specification etc. must be filed within 1 year and 2 months from the filing date or, if the Japanese application claims the convention priority, from the priority date.  Failure to do so results in the application being deemed to be abandoned.