Inventors have a novelty grace period of 12 months after disclosure (including sale).
Reinstatement of priority on grounds of "due care" accepted.
20 years, and the validity period of patents for pharmaceutical inventions and pesticide inventions can be extended to 25 years upon application.
The JPO conducts formality examination only for utility model patent applications.
The design does not lose its novelty if it is disclosed by the designer in Japan within 12 months from the filing date/priority date.
25 years
Inventors have a novelty grace period of 12 months after disclosure (including sale).
Reinstatement of priority is accepted on grounds of "due care."
- via Paris Convention : 6 months from earliest priority date.
- Hague Agreement route: 6 months from earliest priority date.
10 years
1-2 years