The utility model patent is not useless. Generally speaking, compared with invention patents, utility model patents have the advantages of short authorization time, low requirements and low cost. However, because the patent for utility model is not examined in substance, the situation that it is declared invalid after authorization is much higher than that of invention, and the patent for utility model only protects the shape and structure of the product, so the method invention cannot apply for utility model.
1, some units or individuals apply for patents not to protect technology, but to obtain relevant qualifications, which can be quickly obtained through utility models;
2, for bidding or corporate publicity;
3. Because the invention patent is authorized for a long time, in order to prevent the invention patent from being infringed before authorization and after the document is published, for very important inventions, an application for utility model and invention patent can be submitted at the same time. Before the invention is granted, the utility model is protected, and after the invention patent is granted, the utility model patent is abandoned.