Features of counterfeiting a patent with a forged patent number: the patent number is incomplete. The first two digits of the patent number are less than 85; ③ The third digit is a number other than 1, 2 and 3; (4) One digit after the decimal point is a number that is inconsistent with the calculation result of the calculation method introduced earlier.
The patent number of China is basically divided into the following two situations: the patent number before 2002 is divided into four sections.
For example, the first two digits in the first paragraph of 97 10 1765.4 indicate the year when the patent application was filed. For example, "97" indicates the application filed in 1997.
The second paragraph consists of the third digit, indicating the type of patent application, and "1" indicates the invention patent (if "2" indicates the utility model patent, "3" indicates the design patent, "8" indicates the PCT invention patent application and "9" indicates the PCT utility model patent application).
The third paragraph consists of four to eight digits, indicating the serial number of such applications in that year. For example, 0 1765 indicates the application of the current year 1765.
The fourth paragraph consists of the ninth digit or symbol, which is a check bit automatically generated by the computer. It can be any number or character x between 0 and 9, such as "4" in this example.
The authorized patent number, that is, the patent number on the authorization certificate issued by China National Intellectual Property Administration, is the application number before ZL. For example, the patent number granted by XXX is ZL2003 10 100002.