Legal analysis: the protection period of patent is 20 years, the protection period of utility model patent and design patent is 10 years, and the patent right will take effect from the date of authorization announcement. Since the patent application must be examined by the Patent Office, it will take some time to make an authorization announcement for the patent application from the date of filing the application with the Patent Office. The legal protection of the patentee of an invention must be valid for less than 20 years. The patentees of utility model and design patents can actually be protected by law, and the validity period does not exceed 10 years.
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.