PATENT SEARCHERS

Access the database	Intelligo Patentes	Japan Patent Office
Espacenet: Patent Search	Espacenet: Patent search	European Patent Office
LENS.org	Google Patents	WIPO PATENTS Scope
Korea Intellectual Property Rights Informations Service	China National Intellectual Property Administration	CIPO's Canadian Patent Database
Patent Public Search tool of the U.S. Patent and Trademark Office	USPTO Web Patent Databases	African Regional Intellectual Property Organization (ARIPO)