What evidence does patent infringement litigation need to provide?

What evidence does patent infringement litigation need to provide? In patent infringement litigation, the plaintiff must first collect and sort out the evidence according to the four elements of tort liability stipulated in China's civil tort legal norms, and at the same time, combine the particularity of patent infringement, and strive to form a complete chain of evidence and submit it to the court, which is impeccable. As a plaintiff, the following evidence should be provided: What evidence should be provided in patent infringement litigation? (1) evidence of rights 1. Plaintiff's qualification certificate, natural person's ID card, business license of enterprise or institution or institution registration certificate; 2. Patent certificate, which proves the ownership status of the patent right when it is authorized; 3. A copy of the patent register; 4. Patent authorization announcement text: Invention or utility model refers to the patent claim, specification, abstract and drawings; Pictures or photos of the design authorized by the announcement and a brief description; 5. Annual patent fee receipt: it proves that the patent continues to be valid; 6. The utility model patent search report. (2) Infringement evidence 1. Documentary evidence: usually notarized; 2. Physical evidence: infringing products purchased by the patentee from the market. (3) Loss evidence 1. Patent licensing contract; 2. Financial audit report. What evidence does patent infringement litigation need to provide? Bian Xiao answered this question here. If you have more questions about patents, you can continue to pay attention to Bajie's intellectual property rights or contact us by phone.