The patent time is based on the patent application date.

The protection period of a patent application is 10 year or 20 years, counting from the date of application. According to the patent law. The patent protection fee shall be calculated and paid according to the application date. But it will be paid from the year of authorization, not before authorization, for example, in the third year of authorization, and there is no annual fee for the first and second years. Litigation must be initiated after authorization.