What are the requirements for Japanese invention patent application documents

20 years, and the validity period of patents for pharmaceutical inventions and pesticide inventions can be extended to 25 years upon application.

• via Paris Convention : 12 months from earliest priority date.
• via Nationalization of PCT : 30 months from the earliest priority date.

yes

• Grant fee: The applicant needs to pay the granted fee within 30 days after receiving the granted notice, which is the annual fee for the first to third years.
• Annuity: From the 4th year from the date of granted, the annual fee will be paid year by year, and the payment can be postponed within 6 months after the overdue period, but at the same time, 200% of the annual fee of the current year must be paid as a penalty. The amount of the annual fee depends on the number of Claim, and the annual fee can be paid for several years in one lump sum.

yes

yes.

• Within 3 years from the filing date, the patent type can be changed from utility model to invention upon request of the applicant
• Utility model patents can be converted to design patents at any time

A conversion fee shall be paid for patent type conversion. Once the original patent application is converted, it will be deemed withdrawn.

• via Paris Convention : 6 months from earliest priority date.
• Hague Agreement route: 6 months from earliest priority date.

5-7 months

yes. Within 3 years from the date of application, or within 3 months from the date of receipt of the rejection decision, the patent type can be changed from design to invention/utility model at the request of the applicant.

A conversion fee shall be paid for patent type conversion. Once the original patent application is converted, it will be deemed withdrawn.