How long is the validity period of a trademark digital certificate? Where can I check the usage time of a trademark digital certificate? What should I do if it expires? Let me answer these questions for you below. Trademark digital certificates are required by trademark agencies to become users of the Trademark Office’s online trademark application system. The Identity Authentication Center of the State Administration for Industry and Commerce’s Government Affairs Extranet (hereinafter referred to as the CA Center) is responsible for review and issuance. In order to ensure the use of online applications User identity authentication proof that the system can correctly identify the entity's identity when exchanging interconnected information. The validity period of a trademark digital certificate is 2 years. It is calculated from the date of issuance of the certificate. If the certificate expires and needs to be continued to be used, it should be reported to the State Administration for Industry and Commerce?CA within 30 days before the validity period of the certificate expires. ?The center submits an application for certificate renewal. Or contact our customer service to help you check the usage time and renew it when it expires. Digital certificate