The patent application number is represented by 12 digits, including the application year number, application category number and application serial number. The number 1-4 in the patent application number indicates the year when the patent application was accepted, the number 5 indicates the type of the patent application, and the number 6- 12 (***7) indicates the serial number of the application.
Every Arabic numeral used in the patent application number is decimal.
Extended data:
Service rules
1. Joint use of patent application number and parity bit
China National Intellectual Property Administration gave the patent application number and check bit when accepting the patent application. The check bit is located after the patent application number, and the subscript single-byte real dot symbol is used as the separator between the patent application number and the check bit.
2. Joint use of the patent application number and China country code CN.
China country code CN can be used in combination with the patent application number to indicate that the patent application was accepted by China National Intellectual Property Administration, China. CN code should be located before the patent application number. If necessary, a single-byte space of 1 bit can be used between CN and the patent application number.
3. Writing and printing format of patent application number
Unless laws, regulations and administrative rules stipulate that all digits of the patent application number (including digits combined with check digits) must be written or printed continuously, 1 single-byte space can be used between the year number and classification number of the patent application number and between the classification number and serial number respectively.
Baidu encyclopedia-patent application number