What is a patent grant number? The patent grant number is the patent number, which is the number given by the patent applicant after obtaining the grant, and is a document number used for retrieval.
After the patent applicant submits the application to the State Intellectual Property Office, the State Intellectual Property Office will accept the application and give the patent an application number. The patent number that will be obtained after the patent is granted is ZL (patent acronym) + application number.
The application number is composed of 12 digits plus a decimal point, and the composition is (the first four digits) the application year number + (the fifth digit) the type of patent applied for + the patent application sequence number + computer check digit.
Types of patent applications:
1= Patent application for invention.
2= Utility model patent application.
3= Design patent application.
8= PCT invention patent application entered the national phase in China.
9= PCT utility model patent application entering the Chinese national phase.
The difference between a patent number and an application number:
Literal difference: the abbreviation of the patent initials (zl) is added before the patent number; Substantive differences: The legal effect is different, the application number only indicates that the patent is still in the process of application and has not been granted, and there is a risk of not being authorized, while the patent number indicates that the patent has been granted and has legal effect. And it is precisely because the patent number and the application are literally different by one zl, many counterfeit patent behaviors in front of the application number without permission to add the zl code, is the consumer mistakenly thinks that it is an authorized patent, so remind everyone, when buying a patent, you must keep your eyes open, choose carefully, in case you are deceived!