Legal analysis: Generally, if a patent certificate is lost, it cannot be reissued. The patent certificate is only issued once. If the patentee accidentally loses it, the State Intellectual Property Office will not reissue it. At this time, the patentee can apply for a copy of the patent registration book as proof of ownership of the patent right. After the patent right is granted, the change in the legal status of the patent is only recorded in the patent register. This results in the inconsistency between the contents recorded in the patent register and the patent certificate. However, the legal status of the patent is based on the law recorded in the patent register. The status shall prevail.
Legal basis: "Patent Law of the People's Republic of China" Article 35 In accordance with the provisions of Paragraph 2 of Article 31 of the Patent Law, multiple similar designs of the same product shall be treated as one If an application is filed, other designs for the product should be similar to the basic design specified in the brief description. There shall be no more than 10 similar designs in one design patent application.