Databases by subject: Patents

Major Indexes


Contains over 95 million patent documents from around the world and updated daily. Supporting information can help you understand whether a patent has been granted and if it is still in force.

Patentscope (WIPO)

Search patent documents and published international patent applications (PCT).


Find substances, reactions, citations, patents, and more.


Find substances, reactions, references, and patent information.

The Lens

Serves nearly all of the patents in the world as open, annotatable digital public goods that are integrated with scholarly and technical literature along with regulatory and business data.

U.S. Patents Full-Text and Image Database

Full-page images of all patents issued by the U.S. Patent & Trademark Office (USPTO) from 1790 - present. Full-text searching from 1976 - present.

Additional Indexes

Derwent Innovations Index

Facilitates rapid, precise patent searching, letting you conduct patent and citation searches of inventions in chemical, electrical, electronic, and mechanical engineering. Dates of coverage: 1963-present.

Ei Compendex

Find engineering information from GEOBASE, Ei Engineering, Inspec, GeoRef, Referex, CBNB and Chimica.

Materials Science & Engineering Database

Find content on materials science, metallurgy, ceramics, polymers, and composites used in engineering applications.

Mergent Archives

Mergent Archives is an online database providing you with access to a vast, indexed collection of corporate and industry related documents, including annual reports, key business ratios, D&B Country Reports, Million Dollar Directory volumes, Hoover's handbooks, a patent archive, and more.