1. Tools/raw materials: Official website of the Trademark Office

2. Log in to the website of the Trademark Office and click the "Trademark Query" button.

3. Go to the search homepage and select "Trademark Comprehensive Search".

4. Enter the trademark query instructions page and click "I Accept".

5. Enter the "Trademark Comprehensive Search" page and select the conditions you want to enter. For precise inquiries, just enter the registration number. If you want to query all trademarks under the applicant's name, just enter the applicant's name. Entering all five conditions may make the conditions smaller and prone to errors.

6. After clicking "Query", you can see the basic information of the trademark, and then click on the trademark name to enter the next page.

7. You can see the detailed information of the trademark.