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Basic information about trademarks

Trademark Search replaces TESS

As of November 30, 2023, the USPTO has retired TESS and replaced it with Trademark Search. Developers are still working on known issues, however, so full functionality may take a bit longer. The database includes "every trademark that's been registered or applied for." More information is available here.


Trademarks protect words, names, symbols, sounds, or colors that distinguish goods and services from those manufactured or sold by others and indicate the source of those goods.  Trademarks can be renewed for as long as they are being used in commerce. Since 1989, the Library of Science and Medicine (LSM) has been a depository library for United States patents and trademarks. 


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