from the submission of application to authorization, it takes more than one year if it is fast, and 2-3 years if it is normal. It mainly depends on: 1. To request an early public and real trial; 2. The quality of patent writing is high, so that the patent office has no thorns to pick, and there is no notice of examination opinions (this is rare); Or just review the opinion notice once, give a reply as soon as possible, then authorize it, and it will be done.