20 years, and the validity period of patents for pharmaceutical inventions and pesticide inventions can be extended to 25 years upon application.
Inventors have a novelty grace period of 12 months after disclosure (including sale).
10 years
3-6 months
1-2 years
- via Paris Convention : 12 months from earliest priority date.
- via Nationalization of PCT : 30 months from the earliest priority date.
25 years
Reinstatement of priority is accepted on grounds of "due care."
yes
The JPO conducts formality examination only for utility model patent applications.
- Grant fee: The applicant should pay the granted fee and the annual fee for the first year within 30 days after receiving the granted notice.
- Annuity: The annual fee shall be paid year by year from the second year from the date of granted, and the payment of the annual fee may be postponed within 6 months if the annual fee is overdue, but a 200% penalty shall be paid at the same time.