What does it mean that some of the same drugs have patent numbers and some have no patent numbers?

The same drug, some with patent number and some without patent number, is a contribution number, which is the serial number compiled by the industrial production bureau when granting the patent right. 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).

1, exclusivity, the meaning is very simple, that is, within a certain period of time (within the validity period of the patent right) and within the region (within the legal jurisdiction), no unit or individual may exploit its patent without the permission of the patentee.

2, regionality, regionality means that the patent right is a right with geographical scope restrictions, which 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 cannot be renewed.