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Patents: A How-To-Find Guide

Information on locating full-text of patents granted worldwide.

Patent Search Engines


PLEASE NOTE: many other patent websites will provide “some” free information and will provide additional search types or features for a fee. If a free search does not provide results, do not assume a patent does not exist. Free-access databases have a variety of quality in their search engines and patent search terms vary tremendously from country to country. If you are seriously considering applying for a patent, a free search can help you find out whether or not a similar patent already exists; however, first time patent applicants are strongly encouraged to consult some of the books for beginners listed on the Books tab of this guide.

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Erin Thomas
Contact:
150 Parks Library
Iowa State University
515 294-9886

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