When inquiring and registering trademarks, you can try the following methods:

1. Official trademark registration agency: Visit the websites of official trademark registration agencies in your country or region, such as the United States Patent and Trademark Office (USPTO) and China National Intellectual Property Administration (CNIPA). These official websites usually provide trademark inquiry and registration services and are the most reliable and authoritative sources of information.

2. online trademark database: there are many third-party websites that provide trademark inquiry services, such as the GlobalBrandDatabase and the trademark database of trademark registration agencies. You can enter trademark keywords or trademark registration numbers through these databases to get relevant trademark information.

3. Trademark agency: If you are unfamiliar with the trademark inquiry and registration process, or need professional guidance and help, you can consult a trademark agency. Trademark agencies usually have rich experience and professional knowledge and can provide you with comprehensive trademark services, including trademark inquiry, registration and copyright protection.

please note that trademark inquiry and registration involves specific regulations and procedures of a country or region, so it is best to choose the corresponding official agency or legally authorized trademark agency for inquiry and registration according to your specific region or country.

I hope the above information will be helpful for your trademark inquiry and registration. If you have any further questions, please feel free to ask.

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