Entrepreneurship: PATENTS

Searches exclusively US patents and patent applications, but also provides extensive helpful information on patent searching, and links to international patents.

Searches patents from United States Patent and Trademark Office (USPTO), the European Patent Office (EPO), and the World Intellectual Property Organization (WIPO). For more accuracy, do an advanced search here.

Searches 46 million international patent documents and patent applications. Has some coverage not available elsewhere; 10 languages and a translation feature. Official patent site of the World Intellectual Property Organization (WIPO.)

Searches 90 million published patent applications and granted patents from over 90 patent-granting authorities worldwide. Official site of the European Patent Office. Has patent translate feature.