1, the first four digits indicate the year of application, for example, this year's application is 20 15.
2. The second paragraph consists of the fifth digit, indicating the application type, where the fifth digit indicates the application type: for example, 1=? Invention patent application 2= utility model patent application 3=? Design patent application 8= PCT invention patent application 9= PCT utility model patent application 9= China national stage.
3. The third paragraph consists of the sixth to twelfth digits, representing the serial number of the application of this category in the current year;
4. The fourth paragraph consists of the last digit or symbol, which is a check bit automatically generated by the computer and given by the computer.
Extended data:
Features and functions
trait
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 territory (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 generally cannot be renewed. ?
function
1. differentiation function: it can distinguish similar products of other enterprises from their own products to avoid confusion among consumers;
2. Warning function: Since patents are protected by national laws, no one may copy and sell them without permission.
3. Advertising function: Consumers usually think that products marked with patent marks or patent numbers are superior to similar traditional products in technical performance and use function, so they will trust the quality of products and expand their market share.
Baidu Encyclopedia: Patent Number