1, simple and uncorrected, and the consistency of each program is generally less than 3 years.
2, 6 or 7 years long.
If the application is submitted without substantive examination, the examination can start at least three years after the application date, because some technologies need to be improved or considered whether there is a prospect of application or authorization after submitting the patent application from the application date, so there is no hurry to get authorization immediately after submitting the application.