How long is the Japanese patent valid?

The protection period of Japanese patents is introduced respectively. The protection period of Japanese invention patents is 20 years, under certain conditions (inventions in the fields of chemistry and medicine can be extended by 5 years); The protection period of the utility model patent is 10 year; The protection period of the design patent is 15 years. The term of protection of invention patents and utility model patents is calculated from the date of application, while the term of protection of design patents is calculated from the date of registration.

Legal basis:

patent law of the people's republic of china

Article 42 The term of patent right for invention is 20 years, and the term of patent right for utility model and patent right for design is 10 years, counting from the date of application.

Article 44 In any of the following circumstances, the patent right shall be terminated before the expiration of the time limit:

1. Failing to pay the annual fee as required.

2. The patentee waives his patent right in writing.

Where the patent right is terminated before the expiration of the time limit, it shall be registered and announced by the patent administration department of the State Council.