How to obtain the invention patent certificate issued by China National Intellectual Property Administration? How to get the national invention patent authorization?

If you have an invention, you can write a patent document (application, specification, claims, specification abstract, all of which can be downloaded from official website, China National Intellectual Property Administration, and then filled in), and submit it through the electronic certificate you applied for or through the patent agency to the China National Intellectual Property Administration acceptance office. After passing the preliminary examination and substantive examination, you can obtain the national invention patent authorization and issue a patent certificate. Of course, you have to pay the patent application fee, substantive examination fee and other fees.