To inquire about the trademark application code, you can go directly to the trademark registration hall or submit a letter to the Trademark Office for inquiry. To handle inquiries, you need to present corresponding documents, such as the acceptance notice or a copy of the receipt and a sample drawing of the trademark.

1. How to check the trademark application code? (1) Inquiry by incoming person 1. The inquirer can go to the China Trademark Building and present the "Notice of Acceptance" or the paid trademark fee at the inquiry window of the trademark registration hall. A copy of the receipt and trademark pattern are required for enquiry. When inquiring about the application processing status of changes, renewals, transfers, certificate replacements, etc., the registration number or application number of the trademark should also be provided. 2. If the inquiry is conducted in the trademark registration hall, the inquiry results will generally be informed on site; if the results cannot be found at that time, the Trademark Office will notify the inquirer by letter or phone after the results are found. (2) Inquiry by letter 1. Submit a copy of the "Notice of Acceptance" or a copy of the paid trademark fee receipt and trademark drawing with the letter, and the inquiry item, applicant's name, contact person and mailing address should be stated in the letter , and stamped with the official seal; if the applicant is a natural person, a copy of his or her ID card should also be attached. When inquiring about the application processing status of changes, renewals, transfers, license renewals, etc., the registration number or application number of the trademark should also be stated. Please send your letter to: General Office of the Trademark Office, No. 1 Chama South Street, Xicheng District, Beijing, Postal Code: 100055, and please mark the words "Trademark Inquiry" on the envelope. 2. After the Trademark Office finds out the result, it will notify the inquirer in a timely manner.

2. Trademark query conditions Post-application query refers to when the trademark applicant has not obtained any information six months after submitting applications for trademark registration, change, renewal, transfer, renewal, etc. Inquiries on trademark processing status. Applicants can log in to the "China Trademark Network" and click on the "Trademark Query" column to query, or they can send a letter or visit for free query.

3. Precautions for trademark application (1) When conducting inquiry business, the inquirer should submit the "Notice of Acceptance" issued by the Trademark Office or a copy. If the "Notice of Acceptance" is lost, a copy of the receipt for trademark fee payment must be submitted. (2) If the trademark applicant has made corrections or corrections as required, or other circumstances have occurred after submitting its trademark registration application or application for change, renewal, transfer, certification, etc., please indicate it together to facilitate inquiry. . When querying the application code of a trademark, you need to bring relevant documents to the Trademark Office for query, and the query must be done six months after the trademark registration, trademark change application, trademark transfer application, or trademark reissue application. If no reply is received, The situation can only be inquired.