The online application process for trademark renewal mainly includes the following steps:

1. Prepare application materials. The materials that need to be prepared include trademark renewal application, color scanned copy of individual business license, color scanned copy of ID card, etc.

2. Register a user and obtain a PIN. Domestic applicants need to first register as a user in the National Trademark Office’s online service system and obtain a PIN. After passing the review, they can download the digital certificate.

3. Submit the application. Enter the "Trademark Online Application" section through the China Trademark Website of the Trademark Office of the State Intellectual Property Office. After logging in, enter the backend and select "Trademark Subsequent Application - Trademark Renewal Application", fill in the trademark number and category, and the system will default to other information.

4. Pay the fee. When submitting the application, you need to pay the corresponding renewal fee as required.

5. Waiting for review and notification. After submitting the application, wait for the review by the Trademark Office. After the review is passed, the Trademark Office will make an announcement so that others can raise objections. If there is no objection within the specified time or the objection is not established, the applicant will obtain a renewal certificate and complete the entire renewal process.