Validity period of foreign invention patent

The validity period of foreign invention patents is different, mainly in the following aspects: the validity period of American patents is 20 years from the effective application date. European patents are valid for 20 years from the date of filing. The validity period of Japanese invention patents is 20 years from the date of application, and the design patents are 15 years from the date of registration. There is no substantive examination of the patent for utility model, which can be authorized six months after the date of application, and the validity period is six years from the date of application. Article 42 of the Patent Law, the term of the invention patent right is 20 years, and the term of the utility model patent right and the design patent right is 10 years, counting from the date of application.