Legal basis: The copyright protection period in Article 21 of the Copyright Law of People's Republic of China (PRC), the protection period of citizens' works, and the rights stipulated in Items (5) to (17) of the first paragraph of Article 10 of this Law are the author's life and 50 years after his death, ending at 65438+February 3 1 day in the fiftieth year after his death; If it is a cooperative work, the deadline is 65438+February 3 1 50 years after the death of the last dead author. According to 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, all of which are counted from the date of application.