Does each patent certificate have an authorization announcement number?

Yes, patent authorization number: patent number, which is changed by application number. The application number consists of 13 digits, with the first four digits being the year and the next digit being 1 or 2, where 1 stands for invention, 2 stands for utility model, followed by the serial number, and the last digit is the efficiency digit. After the patent application is authorized, the application number becomes the patent number, but

Patent number characteristics:

1. exclusivity simply means that no unit or individual may exploit the patent within a certain period of time (within the validity period of the patent right) and within the region (within the legal jurisdiction) without the permission of the patentee.

2. Regionality, regionality means that the patent right is a right with geographical restrictions and is only valid within the statutory jurisdiction.

3. Timeliness means that a patent is only valid within the time limit prescribed by law. After the expiration of the effective protection period of the patent right, the patent right enjoyed by the patentee will be automatically lost and generally cannot be renewed.