What is the concept of patent number
The patent number is the number given when the patent right is granted and is a type of document number . The document number is the serial number compiled by each industrial property office when publishing patent documents (including public publication and only providing reading and copying).
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 give 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 pending, but the Adding the letters ZL before the number is considered improper use and will be investigated and punished by the industrial and commercial administration department in accordance with the law.
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