20 years, and the validity period of patents for pharmaceutical inventions and pesticide inventions can be extended to 25 years upon application.
20 years, and the validity period of patents for pharmaceutical inventions and pesticide inventions can be extended to 25 years upon application.
10 years
Japan Patent Office
English: Japan Patent Office, abbreviation: JPO
Website: Japan Patent Office (jpo.go.jp)
Japanese Invention Patent Search: Japan Platform for Patent Information|J-PlatPat [JPP] (inpit.go.jp)
yes
- Inventions under the via Paris Convention : 12 months from the earliest priority date.
 - via Nationalization of PCT inventions: 30 months from the earliest priority date.
 
25 years
5-7 months
Reinstatement of priority is accepted on grounds of "due care."
Inventors have a novelty grace period of 12 months after disclosure (including sale).
Filing Language: Japanese Necessary documents:
- Exterior Design Picture (Six Views)
 - A Brief Description
 
Attachments (if any):
- Scanned Copy of Certified Priority Document / DAS
 - Declaration of Ownership/Certification of Employment/Assignment of priority
 - Assignment for Patent Right Transfer