The national registry of trademarks that are valid in the United States is publicly available online. The site https://www.uspto.gov/trademarks/search provides all the information. It is only available in English. Search is free. Anyone can check the full name or a single word.
As a result, information is available, including the registered trademark and its owner. Information will also be recorded if the trademark was sold or donated to a third party. You can also see the date of application and the date of publication in the public register. In addition, full information about the company that owns the trademark is displayed, including the name and address. Information about the representative who conducted the registration is available.
At the very bottom, you can see the live/dead status. This way you can determine if the brand is active or has been withdrawn.