Trademark Searching can be complicated due to the different parts involved.
Trademark usually consists of three distinct parts:
A Trademark search usually consists of searching these three parts individually and then putting them together.
1. Searching the Name or Wordmark
I suggest using the Basic Word Mark Search option
2. Searching for the Logo, Picture or Design
Browse and search the Design Search Code Manual
Bascially each type of goods or service has a class code and you are searching for this code.
And of course you will also want to search the internet for such trademarks to see if the word, logo, or design has been used in commerce previously.
The Science Library at the University of Massachusetts at Amherst is an official U.S. Patent and Trademark Depository Library.
Always call to make an appointment with the Patent and Trademark Librarian if you intend to do a lengthy patent search, need to use PubWest, or for in-depth reference assistance with patents and trademarks.
Disclaimer: While the Library staff is happy to provide assistance with your search, we cannot dispense legal advice. The University of Massachusetts Amherst and its employees provide an informatioin service with no express or implied warranty for results. UMass Amherst assumes no obligatioin or liability for damage arising out of the use, or inability to use, the information provided.