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Patents and Trademarks: Trademark Web Sites

The Ryan-Matura Library is a United States Patent and Trademark Resource Center (PTRC) of the U.S. Patent and Trademark Office.


The following is a list of online trademark resources you may find useful in your research:

Trademark Databases

USPTO Trademark Electronic Search System (TESS)
USPTO Trademark Application and Registration Retrieval system (TARR)
USPTO Trademark Assignment Query Menu
USPTO Trademark Trial and Appeal Board Inquiry System (TTABVUE)
Connecticut State Trademark Search (form for ordering search by Secretary of State's office)​ 
Connecticut State Business Name Search (online)

Canadian Trade-marks Database
Trade Marks from the Patent Office of the United Kingdom
WIPO ROMARIN (International Trademark Information Database)
WIPO Article 6ter Structured Search (State Emblems, Official Hallmarks, and Emblems of Intergovernmental Organizations)
WIPO Appellations of Origin - Lisbon Structured Search

Trademark Classification Manuals and Search Guides

USPTO Basic Facts about Trademarks
International Schedule of Classes
U.S. Trademark Office - Acceptable Identification of Goods and Services Manual U.S. and International Classification numbers)
USPTO Design Code Search Manual
Trademark Manual of Examining Procedure - TMEP
USPTO Official Gazette - Trademarks: recent five weeks
USPTO FAQ about how to use TESS to search for Native American Tribal Insignia
Guide to the International Registration of Marks under the Madrid Agreement and the Madrid Protocol (Adobe Acrobat needed to view document)
Nice Classification of International Goods and Services
Summary of the Official Journal of the OHIM

National and International Trademark Offices

United State Patent and Trademark Office
State Trademark Offices
Canadian Trade-marks
Community Trademark System (European Union)
WIPO Trademark Gateway