According to the current review progress of the Patent Office, it usually takes 6-8 months for a utility model patent to be issued a certificate. It will be approved about 1-2 months after submission, and then after 3 -A payment notice and authorization notice for annual registration will be issued in about 4 months, and a patent certificate will be issued within 2 months after payment.
Invention patents will last longer, with an additional substantive examination stage in the middle. This stage lasts about one year.