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Patent and Trademark Sites

European Patent Office Number Search
Contains data on 60 million+ patent applications and patents from 76 countries. The "Worldwide" database contains the most complete collection of documents.

Free Patents Online
"FreePatentsOnline.com provides fast, free patent searching, with powerful features such as PDF downloading, search management functions, collaborative document folders, and more."

Google Patent Search
Search over 7 million patents from the U.S. Patent & Trademark Office by keyword or patent number. According to Google, "Google Patent Search covers the entire collection of patents made available by the USPTO—from patents issued in the 1790s through those issued in the middle of 2006. We don’t currently include patent applications, international patents, or U.S. patents issued over the last few months, but we look forward to expanding our coverage in the future."

InventNet: the Inventors Network
" The Inventors Network is the first Internet based inventors' organization - the central point of the inventors' community in cyberspace since 1995. Our main goal is to provide independent inventors worldwide with real information and help them develop and market their inventions. We inform and educate inventors regarding the many pitfalls hidden on their path to success. Our organization fights for inventors' rights and for a better PATENT legislation to protect individual Intellectual Property creators."

Patent and Trademark Depository Library Program
Information on the nationwide network of libraries designed to disseminate patent and trademark information and support the diverse intellectual property needs of the public.

Patent Lens
"Search the full-text of more than 7 million patent documents from U.S., Europe, Australia, and W.I.P.O., including their status and counterparts in up to 60 countries." Also includes helpful tutorials on intellectual property issues and patent laws around the world.

U.S. Patent & Trademark Office Patent Full-Text and Full-Page Image Databases
Search issued patents with full-text since 1976 and full-page image from 1790 forward. Published applications are searchable from March 2001.

U.S. Patent & Trademark Office Trademark Information Page
Information on all aspects of trademarks.

This page was last updated on July 20, 2007.