It usually takes about 2 years for an invention, 6-8 months for a utility model, and 4-6 months for an appearance design. Submit the invention patent request, claims, description, abstract, and request for substantive examination to the State Intellectual Property Office; after receiving the acceptance notice and payment notice, pay the application fee; receive the examination opinion notice, and reply to the examination opinion; if authorized If the application is rejected, you will receive an authorization notice and registration notice, pay the registration fee, and receive a patent certificate; if rejected, you will receive a rejection notice.