First, download the patent application form and patent document version (specification, claims, specification abstract, request, request) from the National Intellectual Property Network, fill in the form and write the patent application document, and then you can apply to the Patent Office.
If you can write your own patent documents, you can write your own documents and file a patent application with the Patent Office.
Inventors who are not sure about writing documents and do not know how to apply for a patent may entrust a patent agency to apply for a patent. Patent documents can be submitted to the patent office by mail or in person, and must be registered. The documents cannot be folded when mailed.