Please see below for a detailed explanation of the meaning of Chinese patent numbers. You can go to the Baidu homepage and search for the keyword "China patent package download", and there are many free resources to download the full text.
I often use drugfuture and soopat to search for patents, but the URL can never be uploaded. Please save the country by taking a curveball.
Patent number and application number
Application number: When the patent applicant files a patent application with the State Intellectual Property Office, the State Intellectual Property Office will issue a patent application acceptance notice and grant the patent. Application number.
Patent number: After the patent applicant obtains the patent right, the patent number on the patent certificate issued by the State Intellectual Property Office is: ZL (the first letter of the patent) + application number.
If a patent is under application, but the letters ZL are added before the application number, it is an improper use and the industrial and commercial administration department will investigate and deal with it in accordance with the law.
The meaning of patent number
According to the current Baidu users, the number of inquiries about patent numbers is increasing day by day, which proves that inquiries about the authenticity of patent numbers are increasingly valued by everyone, and my country's patent numbers are basically divided into the following two situations:
Patent numbers before 2002 are divided into four paragraphs: For example: 97101765.4 The first two paragraphs represent the year when the patent application was filed. For example, "97" indicates an application filed in 1997; the second paragraph consists of the third digit, indicating the type of patent application, "1" indicates invention (if "2" indicates utility model, "3" indicates design," 8" is PCT invention patent application, "9" is PCT utility model patent application); the third paragraph consists of the fourth to eighth digits, indicating the serial number of such applications in that year, for example, 01765 means 1765 applications in that year; the fourth paragraph It consists of a number or symbol in the ninth position, which is a check digit automatically generated by the computer. It can be any number from 0 to 9, or the character X, such as "4" in the example.
Since 2002, the basic format of the patent number is 200210000001.1. The first paragraph 2002 represents 2002; the second paragraph consists of the fifth digit, indicating the type of application; the third paragraph consists of the sixth to tenth digits. It consists of two digits, representing the serial number of applications in this category that year (the increase in 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 and time of the Intellectual Property Office. Extended); the fourth segment consists of the last digit or symbol, which is a check digit automatically generated by the computer and given by the computer.
The patent number of an authorized patent is the patent number on the authorization certificate issued by the State Intellectual Property Office, which is the application number plus ZL. For example, the patent number of a certain authorized patent is ZL200310100002.
The patent number starts with the first letter "ZL" in Chinese pinyin, followed by nine digits and a decimal point. The first two digits of the eight decimal points indicate the year of patent application; the third digit Indicates the category of patent application.
1 is invention, 2 is utility model, and 3 is design; the fourth to eighth digits represent the serial number of the patent application in that year; the one digit after the decimal point is the computer inspection number, which It is the remainder obtained by multiplying the first eight digits by 2, 3, 4, 5, 6, 7, 8, and 9 in sequence, adding their products, and dividing by 11. When the remainder is 10, it is represented by X.
For example: The patent number of Yangzi refrigerator liquid discharge device is ZL88201465.X, that is, the patent is the 1465th utility model patent applied for in 1988, where 3+2×4+0×5+1×6+4×7+6×8+5×9=175. Divide 175 by 11, and the remainder is 10, which is represented by X.
It can be seen that if the patent number marked on the product is found to have the following problems, it can be determined to be a counterfeit patented product with a forged patent number: ① The patent number is incomplete; ② The first two digits of the patent number are less than 85 ; ③ The third digit is a number other than 1, 2, or 3; ④ The one digit after the decimal point is a number that does not match the calculation result using the calculation method introduced earlier.
Reference: simon1987