2. Using other people's patent numbers in advertisements or other claims makes people mistake the designed technology for his patented technology;
3. Use the patent number of others in the contract, which makes people mistake the technology designed in the contract for his patented technology;
4. Forge or alter other people's patent certificates, patent documents and patent application documents.
Legal basis: Article 68 of the Patent Law of People's Republic of China (PRC), in addition to bearing civil liability according to law, the department in charge of patent law enforcement shall order it to make corrections and make a public announcement, confiscate the illegal income, and may impose a fine of less than five times the 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.