Applying for a patent can be submitted directly to the Patent Office by the applicant, or a patent agency can be entrusted to handle it. 1) Submit patent application documents (can include claims, description, description drawings, abstract, abstract drawings, the specific file format can be downloaded from the official website of the Patent Office), patent application request (including invention title, applicant, invention Person and related information, etc. (the specific file format can be downloaded from the official website of the Patent Office), and pay the patent application fee. 2) After submitting these to the Patent Office, you can obtain the application date and application number, which will be used as the unique number for future patent office examination. The official acceptance notice will be issued within two weeks after the application date. 3) The Patent Office will examine and may issue a notice of examination opinion or a notice of correction, which requires the applicant to respond within a specified time limit. After the examination is finally passed, the Patent Office will issue an authorization notice indicating that it agrees to the authorization. 4) The patent authorization announcement will take effect after the applicant registers the authorization.