China's patent law stipulates that the term of protection of invention patents is as follows

China's patent law stipulates that the protection period of invention patents is 20 years. From the filing date of the invention patent, the term of the invention patent is 20 years, the term of the utility model patent is 10 year, and the term of the design patent is 15 year, all from the filing date. Where the patentee of an invention patent fails to pay the annual fee as required, his invention patent shall be terminated by the patent administration department of the State Council.

Generalization of patent law

Patent law is the sum total of legal norms to adjust certain social relations arising from inventions and promote technological progress and economic development. By its nature, patent law is both a domestic law and a foreign-related law. It is not only a substantive law that establishes the rights and obligations of the patentee, but also a procedural law that stipulates a series of procedural systems for patent application and approval. It is also a law to adjust the vertical relationship between patent application, approval and patent implementation management, and the horizontal relationship between patent ownership, patent transfer and license.

It mainly includes the following contents: the qualification of the applicant for a patent for invention, the object protected by the patent law, the patent application and examination procedure, the conditions for obtaining a patent, the patent agency, the ownership of the patent right, the occurrence and extinction of the patent right, the protection period of the patent right, the rights and obligations of the patentee, the patent implementation, transfer and use license and the protection of the patent right.