WeChat official account and announcement number: In fact, the same thing, the invention is unique, and it can only be made public without authorization. It consists of 9 digits+1 letter, and the last letter is a.
Authorization announcement number: both invention and practical, which appears after authorization. In the case of invention, it evolved from WeChat official account or announcement number, and the last letter became B; If it is practical, the last one is u.
The patent number is the number given when the patent right is granted, and it is a submission number. The submission number is the serial number compiled by each industrial property office when publishing patent documents (including public publication and reading and copying only).
Patent number characteristics:
(1) exclusivity simply means that within a certain period of time (within the validity period of the patent right) and within a certain area (within the legal jurisdiction), no unit or individual may exploit the patent 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.