Or what are the acts of counterfeiting other people's patents?

The following acts belong to counterfeiting other people's patents: (1) marking other people's patents on products or packages manufactured or sold without authorization; (2) Misleading others by using others' patents in the claim materials or contracts without authorization; (3) Forging or altering other people's patent-related information.

legal ground

Article 68 of the Patent Law: 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 its illegal income, and may impose a fine of not more than five times its 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 216 of the Criminal Law, whoever counterfeits another person's patent, if the circumstances are serious, shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention and shall also, or shall only, be fined.