Patent Translation & Filing Requirements in Japan

Languages Allowable language(s) for specification upon filing to obtain filing date Japanese or English
Language(s) of translation (language(s) of procedure) Japanese
PCT National/regional phase possible Yes
Time limit for entering national/regional phase 30 months from filing/priority date
Time limit for filing translation 30 months from filing/priority date or within 2 months from entering the national phase, whichever expires later
Paris Convention / Direct Time limit for filing translation 14 months from priority date
Certification needed for translation No
Certified copy of priority application required Yes, 16 months from priority date
Translation of priority application required No, only of the certificate, to be filed together with priority document
Certification needed for translation of priority application No
EP Required translations N/A

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