A patent number is made up of many numbers, so how are these numbers arranged and according to what

Patent numbers before 2004, which are divided into four paragraphs: for example: the first paragraph is the first two digits, indicating the year the patent application was filed, such as"97"indicates an application filed in 1997; The second paragraph consists of a third digit indicating the type of patent application"1"Indicates the invention (if any"2"denotes a utility model,"3"denotes the design,"8"Patent application for PCT"9"PCT Utility Model Patent Application); The third paragraph consists of the fourth to eighth digits, indicating the serial number of such applications in the current year, e.g. 01765 indicates 1765 applications in the current year; The fourth segment consists of a digit or symbol in the ninth digit, which is an automatically generated check digit generated by the computer, which is the sum of the first 8 digits multiplied by the sum of their products, and then the remainder obtained by dividing by 11.

When the remainder is equal to or greater than 10, it is denoted by x. For example, patent number, the calculation method for calculating the last digit is 9 2 5 3 1 4 1 5 5 6 6 7 0 8 8 9 186, divide 186 by 11, and obtain the remainder of 16, that is, expressed by x.

In this way, the authenticity of the patent can be identified and the value content of the patent can be estimated.

Since 2004, the basic format of patent numbers is as follows: the first paragraph of 2002 is indicated as 2002; The second paragraph consists of the fifth digit, which indicates the type of application; The third paragraph consists of the sixth to twelfth digits, representing the serial number of applications in that category in the current year (the increase in the number of digits represents the increase in the number of applications in recent years, which is really gratifying and encouraging; On the other hand, it does increase the workload of the IP office and prolong the time); The fourth segment consists of the last digit of numbers or symbols, which is an automatically generated check digit from the computer and is given by the computer.

The patent number of the authorized patent, that is, the patent number on the authorization certificate issued by the State Intellectual Property Office, is the application number preceded by zl. For example, the patent number of the authorized patent is ZL200310100002.

Year (originally two, now four), type represents invention, utility model, design), serial number.

Application number. The application number is the number of the patent application given to the patent application at the same time as the acceptance of a rough patent application by the Chinese Patent Office, all of which are coded in eight digits, the first two digits represent the age of the application, and the third digit represents different patent types, "1" represents the invention patent, "2" represents the utility model, "3" represents the design patent, and the last five digits are the serial numbers of the patent applications of the year, and finally add a decimal point and a computer check code. Example: