Legal analysis: In China, the protection period of different types of inventions is different. The protection period of invention patents is 20 years, and the protection period of utility model patents and design patents is 10 years, all from the date of application.
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.