How long does patent protection last?

Patent Q&A

首頁 / 专利Q&A / 専利権の期間はどれくらいか？計算方法は？

2020/08/10

An invention patent is granted for a term which begins with the publication date of the grant and ends 20 years from the filing date of the patent application.

A utility model patent is granted for a term which begins with the publication date of the grant and ends 10 years from the filing date of the patent application.

A design patent is granted for a term which begins with the publication date of the grant and ends 15 years from the filing date of the patent application.