Filing rules by country

Japan

Patent filing & translation requirements

Below we’ve listed the patent filing and translation requirements for Japan. Whilst we endeavour to ensure these regulations remain up-to-date, they are subject to change. We advise you check with the local patent office or relevant counsel regarding any questions about country specific regulations.

To visit the Japan Patent Office website, go to 

Direct Route: Filing & Translation Requirements in Japan
LanguageJapanese
Filing Deadline12 months
Filing ExtensionNo
Translation Extension4 months
Power of AttorneyRecommended to submit when entering national phase
General POA AcceptedYes
AssignmentsNo
Excess Claims Fee Due at FilingNo
Claims Amendment Possible at FilingYes
Fee for Amending Claims at FilingNo
Request for Examination DeadlineDue within 3 years from the international filing date
Can Examination be Requested at Filing?Yes
Priority Document16 months from earliest priority date, DAS code or certified copy, no translation required
PCT Route: Filing & Translation Requirements in Japan
LanguageJapanese
Filing Deadline30 months
Filing ExtensionNo
Translation Extension2 months
Power of AttorneyNo
General POA AcceptedN/A
AssignmentsNo
Excess Claims Fee Due at FilingNo
Claims Amendment Possible at FilingNo
Fee for Amending Claims at FilingN/A
Request for Examination DeadlineDue within 3 years from the international filing date
Can Examination be Requested at Filing?Examination can be filed only after or simultaneously with submission of the original translation
Patent Prosecution HighwayYes

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