Legal basis: People's Republic of China (PRC) Patent Law.
Article 65 Where a patent is exploited without the permission of the patentee, that is, the patent right is infringed and a dispute arises, the parties concerned shall settle it through consultation; Unwilling to negotiate or failing to do so, the patentee or interested party may bring a suit in a people's court or request the administrative department for patent affairs to handle it. When the administrative department for patent affairs finds that the infringement is established, it may order the infringer to stop the infringement immediately. If a party refuses to accept the decision, he may bring a lawsuit to the people's court in accordance with the Administrative Procedure Law of the People's Republic of China within 15 days from the date of receiving the notice of handling. If the infringer fails to prosecute and stop the infringement upon expiration of the time limit, the administrative department for patent affairs may apply to the people's court for compulsory execution. At the request of the parties concerned, the administrative department for patent affairs may mediate the amount of compensation for patent infringement; If mediation fails, the parties may bring a lawsuit to the people's court in accordance with the Civil Procedure Law of People's Republic of China (PRC).
Article 66 Where a patent infringement dispute involves an invention patent of a new product manufacturing method, the unit or individual that manufactures the same product shall provide proof that its product manufacturing method is different from the patented method.
Where a patent infringement dispute involves a patent for utility model or a patent for design, the people's court or the administrative department for patent affairs may require the patentee or interested party to issue a patent evaluation report made by the patent administrative department of the State Council after searching, analyzing and evaluating the relevant utility model or design as evidence for hearing and handling the patent infringement dispute; The patentee, interested party or accused infringer may also issue a patent evaluation report on his own initiative.
Article 68 Anyone who counterfeits a patent shall bear civil liability according to law, and the department in charge of patent law enforcement shall order him to make corrections and make a public announcement, confiscate his illegal income, and may concurrently impose a fine of less than five times his illegal income; If there is no illegal income or the illegal income is less than 50 thousand yuan, a fine of less than 250 thousand yuan may be imposed; If a crime is constituted, criminal responsibility shall be investigated according to law.
Article 75 Any of the following circumstances shall not be regarded as infringement of the patent right:
(1) The patentee or a unit or individual licensed by the patentee uses, promises to sell, sells or imports its patented products or products directly obtained by patented methods;
(2) Having manufactured the same product, used the same method or made necessary preparations for its manufacture and use before the patent application date, and continuing to manufacture and use it only within the original scope;
(3) Foreign means of transport temporarily passing through China's territorial waters and airspace use the relevant patents in their devices and equipment for their own needs in accordance with the agreements signed between their countries and China or international treaties to which they are both parties, or on the principle of reciprocity;
(four) the use of relevant patents for scientific research and experiments;
(5) manufacturing, using or importing patented drugs or patented medical devices for the purpose of providing information required for administrative examination and approval, or manufacturing or importing patented drugs or patented medical devices exclusively for them.