1. The National Trademark Office will not disclose the telephone number of the trademark owner! The best way is to inquire through the trademark agency, but generally there must be a reasonable reason. 2. The information of registered trademark owners is public, but their privacy is protected. Therefore, it is generally not possible to find the number of the trademark registered owner. If you want to contact the registered trademark owner, you can do so by letter, because the owner's registered address is public. 3. Provide two free query methods 1. China Gongxiaoma website - trademark query (independent) 2. Baidu 186 trademark transfer - customer service - trademark query (manual) 4. If you want to query the information of the trademark registrant, You can go to Xiaoma.com, Trademark Search, Comprehensive Search Office, enter relevant keywords, trademark name, or applicant name, and you can see the specific trademark application information. If you want to know the phone number, the other party applied for a trademark in his or her own name. I’m afraid Baidu won’t show the phone number. It’s possible to ask the other party’s trademark agency to get it. If it is a trademark applied for in the name of a company, you may be able to find it on Baidu. 5. First go to the Trademark Office website to check the trademark. There is an agency in the trademark information, then Baidu the agency to find its phone number, and finally find the person. In the first method above, you cannot see the contact number; in the second method, only the trademark transferor will leave some information. 6. You need to know the registered name of the trademark and the name of the applicant before you can query the information of the trademark owner and the trademark registration information. Search on the website of the National Trademark Office and enter the trademark name, applicant name and registration number in the query system for comprehensive query. Information has been found