After the patent is accepted, the Patent Office of the Intellectual Property Office of the State Administration of Market Supervision will send the Notice of Acceptance of Patent Application. Under the first barcode, there will be a list of "patent number or application number", followed by a number of 13, which is the patent number.
After the patent certificate comes down, the number will appear in the patent number list again.
The difference is that the letter ZL will appear before the number. ZL is the abbreviation of "patent" in Chinese pinyin. This combination is the patent number embodied in the patent certificate.
In practical application, you don't need to fill in the letter ZL whether you are inquiring about patents or filling in other forms.
The current patent number in China is 13, and the first to fourth digits indicate the year, such as "20 172 1607578.9", indicating the year 20 17.
The fifth digit indicates the patent type, in which "1" indicates the invention patent; "2" stands for utility model patent; "3" stands for design patent.
The sixth to twelfth digits indicate the serial number of this year's patent application. For example, in the patent number "20 172 1607578.9", "1607578" means that this patent is the utility model patent applicationNo. 1607578 in 20/7.
Between the thirteenth and twelfth digits, there is a separator ".",and the number or letter after the separator indicates the check code. The check code includes 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, and 0 is a number and the letter X.
Check code of patent certificate.
Numbers from bit 1 to bit 12 are represented by the following variables: x4, x3, x2, x 1, y, z7, z6, z5, Z4, z3, z2, z 1.
The calculation formula of parity bit is:
(X4 * 2+X3 * 3+X2 * 4+x 1 * 5+Y * 6+Z7 * 7+Z6 * 8+Z5 * 9+Z4 * 2+Z3 * 3+Z2 * 4+z 1 * 5)MOD( 1 1)
If the remainder is a few, the parity bit is a few. If the remainder is 10, the corresponding parity bit is X. ..