How to complain about appearance patent infringement?

1. Compare the suspected infringing products with the patents involved. If the design elements are basically the same, it is difficult to distinguish and evaluate the possibility of infringement. 2. Self-evaluate the design patent or apply to China National Intellectual Property Administration for an evaluation report to confirm the stability of the patent. 3. Investigate and collect factual evidence of infringement, mainly involving manufacturers, sellers, production and sales scale, profit rate and other data. 4. After doing the preparatory work in front, I took action to defend my rights and complained about the infringement to the patent management department. Article 73 of the Patent Law of People's Republic of China (PRC) * * * The patent administration department shall not participate in business activities such as recommending patented products to the society. Where the administrative department for patent affairs violates the provisions of the preceding paragraph, it shall be ordered by its superior organ or supervisory organ to make corrections, eliminate the influence and confiscate the illegal income; If the circumstances are serious, the directly responsible person in charge and other directly responsible personnel shall be given administrative sanctions according to law.