https://www.uspto.gov/trademarks/search
Search our trademark database | USPTO
A search you complete before applying for a trademark registration to make sure your trademark is available to register for your particular goods or services,...
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https://www.tmsearch.cn/questions?lang=en&tag=Status
China Trademark Database Free Search | TMsearch.cn
TMsearch is a service tool that provides trademark search, watch and management in China. Search database for trademark registration and application by name,...
trademark databasefree searchchinacn