(1) together with the filing date constitutes the main symbol of the formal acceptance of patent applications.
(2) It is the main basis for identifying specific patent applications. There is a one-to-one correspondence between application number and patent application. Once the application number is indicated, the specific patent application is also indicated. (3) It is an important means for the Patent Office to manage patent applications in the examination and approval procedures. For example, the management of patent application documents is arranged according to the application number and tail number. The current patent application number in China has two forms: the patent application number before June 65438+1 October 20031consists of 9 characters and a dot located after the 8th character, such as 98202 129. 1, in which the first sum from the edge of the left-numbered document. The third digit indicates the category of the patent application, which can only be 1, 2, 3, respectively indicating the invention, utility model and design patent application; The fourth to eighth digits indicate the serial number of the application, which is arranged from 0000 1 every year; The ninth digit after the dot is the computer check digit, which can be one of the symbols of 0, 1 ... 9, x * * *1/Check whether the application number is wrong.
There is a formula to check the correctness of the application number, that is, the number 1 of the application number is multiplied by 2, the number 2 is multiplied by 3, the number 3 is multiplied by 4, ... until the number 8 is multiplied by 9, and their products are added. The sum obtained is divided by 1 1, and the remainder is the number 9 of the application number. For example, there is an application number of 982365438. The formula is: (9× 2+8× 3+2× 4+0× 5+2× 6+17+2× 8+9× 9) ÷1=16 ...
From June 5438+1 October1in 2003, China upgraded the original application number of 10 to 14, such as 2016/kloc-0. The upgraded application number is separated by 13 Arabic numerals and 1 solid dots, where: 1-4 indicates the year, the 5th indicates the patent application type, the 6th-12 indicates the serial number, and 13 indicates the computer check bit,/kloc-
There is also a formula to check the correctness of the new application number, that is, the number 1 times 2, the number 2 times 3, the number 3 times 4, … until the number 8 times 9, the number 9 times 2, the number 10 times 3, the number1times 4, and the number1. Divided by 1 1, the remainder is 14 of the application number. If the application number is 201610174094.3, the formula is: (2× 2+0× 3+1× 4+/kloc-0 /× 5+1× 6. If the remainder is 10, the computer parity bit is X. If there is no remainder, the computer parity bit is 3.