United States Patent and Trademark Office
web site includes constantly updated information regarding United
States Patents and Trademarks and much, much more.
Frequently Asked Questions about
U.S. patents, patent application processes (i.e., patent prosecution)
and patent laws and rules.
United States Patent and Trademark Office
Fee Schedule
Official Gazette notices from July 1,1964
European Patent Office
World Intellectual Property Organization
(WIPO) and Patent Cooperation Treaty(PCT)
Patent Cooperation Treaty
information. Member sites are listed under the "Basic Fact" section.
Japan Patent Office
Internet Patent Search Engines:
Warning: While internet patent search
engines are useful to locate potential knock out references, they are
NOT a substitute for a manual patent search conducted by an experienced
patent searcher. Contact HWD on how to obtain these services.
U.S. Patents at the United States Patent and
Trademark Office (FULL TEXT and with images with proper
browser plug-in download).
Delphion
Patent Database (fee-for-service on-line search engine)
European and Other non U.S. Patents
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