Legal analysis: patents can be divided into invention patents, utility model patents and design patents. Different types of patents have different protection periods. According to Article 42 of the Patent Law of People's Republic of China (PRC), the term of invention patent is 20 years, and the term of utility model patent and design patent is 10 years, counting from the date of filing.
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.