How to check whether the "Patent Authorization Notice" has been sent?

Go to China National Intellectual Property Administration's homepage, click "Publish Inquiry Notice" in the middle right, and the website address is: 8080/sipoiid/JSP/certificate/searchcertificate.jsp.

After input, enter the application number for inquiry.

Information query description of patent certificate issuing document

This website provides information on the publication of patent certificates on the Internet. The first publication date was May 3, 2006. The publication date of China National Intellectual Property Administration Patent Office is every Wednesday. The patent certificate information published on this website is updated every Monday.

Patent certificate issuance data includes patent certificate issuance date, registration number, recipient and recipient address.