After the latter invention patent is authorized, the former utility model patent needs to be abandoned before the invention patent certificate can be obtained.
Finally got the invention patent certificate. (provided that all can be authorized)
Cost: It is the cost of a utility model patent+the cost of an invention patent.
Invention: the application fee is 900; Printing fee 50; Substantive examination request fee 2500; Registration printing fee 250; Stamp duty 5; The annual fee is 900 4605 yuan.
Utility model:
The application fee is 500; Registration printing fee 200; Stamp duty 5; Annual fee of 600;
1305 yuan.