1. Trademark Registration Office official website Enquiry: You can inquire about trademarks through official website, China National Intellectual Property Administration.
2. Query in the trademark database: Some trademark databases contain global trademark information, which can be queried by information such as trademark name, trademark registration number and trademark applicant.
3. Consulting professional organizations: Some professional organizations provide trademark inquiry services, which can help to inquire about the registration of trademarks, such as law firms and intellectual property agencies. These institutions can usually provide more professional and comprehensive inquiry services, but they need to pay a certain consulting fee.
It should be noted that trademark query needs to provide accurate information such as trademark name or trademark registration number, otherwise, query errors or inaccuracies may occur. In addition, the trademark query results are for reference only and cannot replace legal opinions or professional opinions. If you need to know more about trademark registration or legal consultation, please consult a professional lawyer or intellectual property agent.