If you plan to handle it yourself, you need the following items:
1) patent application documents (including claims, specifications, drawings of specifications, abstracts and abstract drawings)
2) the patent request (including the name of the invention, the applicant, the inventor and related information, etc.). )
3) Patent application fee (i.e. the formal fee paid to the Patent Office).
4) After submitting these to the Patent Office, you can get the application date and application number, which are the only numbers to be examined by the Patent Office in the future. The formal admission notice will be issued within two weeks after the application date.
5) After examination by the Patent Office, the Patent Office issues a notice of authorization, indicating that it agrees to authorize.
6) The announcement of patent authorization shall take effect after the applicant registers (pays) the authorization.
The standard official fee for utility model patent application is 500, and those who meet the conditions of personal fee reduction can be reduced to 75.
Please note that there is no need for complicated diagrams, just at least one structural schematic diagram.