Legal analysis: the term of invention patent right is 20 years, and the term of utility model patent right and design patent right is 10 years, all of which are counted from the date of application. Because the patent application must be examined by the Patent Office before obtaining the patent right, it will take some time from the date of application to the announcement of authorization made by the Patent Office, so the effective period of the patentee's actual legal protection must be less than the protection period.
Legal basis: Article 42 of the Patent Law of People's Republic of China (PRC) has a term of 20 years, and the term of utility model patent and design patent is 10 years, counting from the date of filing.