1. Plaintiff's qualification certificate: natural person's ID card, business license of enterprise or institution or institution registration certificate, etc.
2. Patent certificate, which proves the ownership status of the patent right when it is authorized. 3. The copy of the patent register is more important evidence than the patent certificate in a sense. It not only records the ownership status of the patent when it is authorized, but also records the changes of the ownership status after the patent is authorized, such as patent transfer and patent being declared invalid. These contents can not be reflected in the patent certificate, but will be reflected in the copy of the patent register, so the copy of the patent register reflects the ownership of the patent better and more truly than the patent certificate.
4. Text of patent authorization announcement: the announcement of invention or utility model includes patent claim, specification, abstract and abstract drawings; The contents of the design announcement are authorized pictures or photos and a brief description.
5. Receipt of annual patent fee: It proves that the patent continues to be valid. Of course, if a copy of the above patent register is provided, the evidence can be omitted. Because in the bottom line of the copy of the patent register, it is indicated that "the annual patent fee has been paid to a certain day." In judicial practice, the patentee provides proof of the patent annual fee receipt to show that the patent has paid the annual fee and the patent is still valid. However, in the practice of patent payment in China National Intellectual Property Administration, even if the patent has been declared invalid, or the patent right is terminated due to failure to pay the annual fee, the patent fee can still be paid, so as to obtain a patent annual fee receipt. Therefore, it is not enough to prove that the patent continues to be valid only through the annual patent fee receipt.
6. Patent evaluation report: If a patent infringement dispute involves a patent for utility model or a patent for design, the people's court or the administrative department for patent affairs may require the patentee or interested party to produce a patent evaluation report made by the patent administrative department of the State Council after searching, analyzing and evaluating the relevant utility model or design as evidence for hearing and handling the patent infringement dispute.