1. Determine the protection scope of the design patent. 2. Determine whether the patented product of design and the infringing product belong to the same or similar products. Usually, it is based on the function and use of the product, and at the same time, it refers to the commodity classification in the international design classification. Where a patented product of design has the same function and use as the product accused of infringement, it can be identified as the same or similar commodity. If they are different in function and use, it can be concluded that they are neither the same commodity nor similar commodities, so patent infringement will not be established. 3. Compare the design patent with the accused infringing product, that is, observe the patented design and the accused infringing product from the perspective of ordinary consumers and make an overall judgment. After comparison, the following three results may appear: (1) The appearance design of the accused infringing product is exactly the same as this patent, so the former belongs to the scope of patent protection and the patent infringement is established; (2) The design of the accused infringing product is basically the same as the patent design in the main part, and the whole is similar. According to the principle of equivalence, the patent infringement may be established; (3) If the design of the accused infringing product is neither the same nor similar to the design of the patent as a whole, it is deemed that the accused infringing product has not fallen into the protection scope of the patent right, and the patent infringement is not established. 4. The infringement has caused the patentee to suffer actual losses;
Legal objectivity:
The evidence in Article 63 of the Civil Procedure Law of People's Republic of China (PRC) includes: (1) the statement of the parties; (2) Documentary evidence; (3) Physical evidence; (4) Audio-visual materials; (5) Electronic data; (6) Testimony of witnesses; (7) Appraisal opinions; (8) Records of the inquest. Evidence must be verified before it can be used as a basis for ascertaining facts. According to Article 64 of the Civil Procedure Law of People's Republic of China (PRC), the parties have the responsibility to provide evidence for their claims. Article 121 of the Civil Procedure Law of People's Republic of China (PRC): (1) The name, sex, age, nationality, occupation, work unit, domicile and contact information of the plaintiff, the name and domicile of the legal person or other organization, and the name, position and contact information of the legal representative or principal responsible person; (2) Information such as the name, gender, work unit and domicile of the defendant, and information such as the name and domicile of the legal person or other organization; (3) the request and the facts and reasons on which it is based; (4) Evidence and its sources, names and residences of witnesses.