The types of utility patents in books and materials include utility model patent application, utility model patent authorization announcement, utility model patent certificate, utility model patent annual fee notice, utility model patent retrieval report, utility model patent invalidation decision, etc. According to relevant public information, utility model patent is an important form in the field of intellectual property rights, which is mainly used to protect new technical schemes, product designs, production processes and other utility models. Compared with invention patents, the examination standards for utility model patents are relatively relaxed, and the threshold for obtaining patent protection is lower. The data types of utility model patents mainly include application, authorization announcement, certificate of rights, annual fee notice, search report and invalidation decision, which are of great legal significance to the patentee and related parties.