Trademarks As a Patent and Trademark Depository Library , Linda Hall Library provides, without charge, the tools and instruction for performing a patent or trademark search.
Reference librarians are on hand to provide assistance.
Appointments are encouraged for individuals new to the process of doing a patent or trademark search. The completeness or accuracy of a search rests entirely on the individual doing the search. Users are urged to consult a patent attorney for legal advice. Begin with this alphabetical subject index to the Manual of Classification. Look up common terms describing the invention and its function, effect, end-product, structure. and use.