legal ground
People's Republic of China (PRC) Patent Law Article 2 Invention-creation as mentioned in this Law refers to inventions, utility models and designs. Article 22 An invention or utility model that has been granted a patent right shall be novel, creative and practical. Novelty means that the invention or utility model does not belong to the prior art; No unit or individual filed an application for the same invention or utility model with the administrative department for patent in the State Council before the filing date, and it was recorded in the patent application documents published or announced after the filing date. Creativity means that compared with the prior art, the invention has outstanding substantive features and remarkable progress, and the utility model has substantive features and progress. Practicality means that the invention or utility model can be manufactured or used and can produce positive effects. The existing technology mentioned in this law refers to the technology known to the public at home and abroad before the date of application.