U.S. Patent and Trademark Office
www.uspto.gov

European Patent Office
www.european-patent-office.org

U.S. Patent and Trademark Office Patent Databases
www.uspto.gov/patft/index.html

European Patent Database
ep.espacenet.com

U.S. Patent and Trademark Office Trademark Database
www.uspto.gov/main/trademarks.htm

Library of Congress
www.loc.gov

Library of Congress Copyright Office
www.loc.gov/copyright

World Intellectual Property Organization
www.wipo.org

Minnesota High Tech. Association
www.mhta.org

Legal Information Institute Supreme Court Collection
supct.law.cornell.edu/supct

Cornell Legal Information Institute
www.law.cornell.edu