What is a double patent?

Does the subject want to ask, "After the double application of utility model and invention patent, the patent will be affected if the utility model is not protected after it is made public?" No. According to the Patent Law of People's Republic of China (PRC), the protection period of utility model patents is short, and the scope of protection is usually narrow, which only involves the improvement of appearance or structure. Invention patent protects the novelty, creativity and realization possibility of technical scheme, with longer protection period and wider protection scope; Therefore, the publication of utility model patents will not automatically affect the effectiveness and protection of invention patents. A patent is a document issued by a government agency or regional organization representing several countries according to the application. This kind of document records the contents of the invention and creation, and in a certain period of time, it has produced such a legal state, that is, under normal circumstances, a patented invention and creation can only be implemented with the permission of the patentee.