From application submission to authorization, it will take more than 1 year if it is fast, and 2-3 years if it is normal. Mainly depends on 1. It is necessary to ask for an open and true trial in advance; 2. The quality of patent writing is high, which makes the patent office have no thorns to pick, and there is no notice of examination opinions (this situation is rare); Or send a 1 audit opinion notice directly, reply as soon as possible, and then authorize it, and it's done.