What is the duration of intellectual property protection?

The protection period of invention patents in China is 20 years, and the protection period of utility model patents and design patents is 10 year. Counting from the date of patent application; The copyright protection period of China citizens' works is 50 years before and after the author's death. Article 42 of the Patent Law of People's Republic of China (PRC)? 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, both counting from the date of application.