(1) Forge or alter other people's patent certificates, patent documents and patent application documents;
(two) the use of the patent number of others in advertisements and contracts, which makes people mistake the designed technology for his patented technology;
(3) Other acts of counterfeiting patents.
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.
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.