Asearchyou complete before applying for atrademarkregistration to make sure yourtrademarkis available to register for your particular goods or services, and to make sure that no othertrademarkconflicts with it.
The use oftrademarksdates back thousands of years, however we can't date their origins with precision. Some of theearliestforms of identification of marks date from Prehistory. For instance, the Lascaux cave paintings in France show bulls drawings with marks on them.
Trademarkregistration by Filer, Stowell & Co. for The "Boss" Dog. brand Saw-Mill Dog. 1876. Library of Congress Prints and Photographs Division. Researchers interested in searchingtrademarkrecords can do so both in person, at the US Patent andTrademarkOffice (USPTO) PublicSearchFacility, or online, using the websites listed below. For a more in-depthsearch, you may wish to use a ...

Records of the Patent andTrademarkOfficeSearchthis Record Group in the National Archives Online Catalog (Record Group 241) 1836-1973 23,879 cu. ft. Table of Contents 241.1 ADMINISTRATIVE HISTORY 241.2 RECORDS OF THE PATENT OFFICE (RECONSTRUCTED RECORDS) RELATING TO "NAME AND DATE" PATENTS 1837-87 12 lin. ft.
Eachtrademarkpage shows complete filing data pulled directly from the USPTO. Filing dates, registration dates, publication dates, renewal deadlines, and current status. Current owner name, address, legal entity type, and the attorney / correspondent of record. Full descriptions under each international class with first-use-in-commerce dates.

As we can see from the illustration, Earliest Registered Trademark Search has many fascinating aspects to explore.
Use the Global Brand Database tosearchinternationally protectedtrademarks, appellations of origin, state emblems etc.