Invention patents must undergo preliminary examination and substantive examination. Utility models and designs only require preliminary examination before being authorized and announced. ① For invention patents, a request, description, abstract of the description and claims must be submitted, and the description and drawings must be included when necessary. ② For utility model patents, a request, claims, description, drawings of the description, abstract of the description and drawings of the abstract must be submitted. ③For design patents, a request letter and pictures or photos of the design must be submitted. Utility model and design patents take about 8-12 months. After passing the formal examination, an authorization notice will be issued and the certificate collection procedures will be completed. After paying the license fee, the patent certificate will be obtained in about 2-3 months. The specific time depends on the speed of the examiner's examination, the degree of detail of the applicant's disclosure materials, and the availability of attached drawings. Applicants must make sufficient preparations before applying. (1) Understand the relevant laws and regulations in detail and be familiar with various application procedures. (2) Understand the current level of the technical field, search domestic and foreign patents, and conduct feasibility analysis of your own inventions and creations. (3) Do a good job of confidentiality. Cost reduction. Patent fees that are allowed to be reduced include: application fees, invention patent application maintenance fees, invention patent substantive examination fees, reexamination fees, and patent annual fees for three years after authorization.