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Patents and Trademarks   Tags: engineering, patents_and_trademarks  

This subject guide provides a starting point for research in patents and trademarks.
Last Updated: Apr 22, 2015 URL: http://guides.lib.umich.edu/patents Print Guide RSS Updates

Patents Print Page

Patent Searching Tutorial

Searching for Patents

If you intend to make, use, or sell an invention of yours, you should find out whether someone else has created something like it already. You have a number of options when it comes to searching for patents. Below are some patent searching sites.

  • US Patent & Trademark Office - Patent Searching
    Covers US patents issued from 1790 to the most recent weekly issue date. See the USPTO website for important notices concerning the database.
  • European Patent Office (Espacenet database)
    Search for European, US, PCT, Japanese and other worldwide patents.
  • Derwent Innovations Index
    Derwent Innovations Index facilitates rapid, precise patent searching and merges the value-added patent information from Derwent World Patents Index with the patent citation information from Derwent Patent Citation Index.
  • Google Patents
    Covers patents and applications from USPTO and EPO.
  • CIPO - Canadian Patents Database
    A Canadian Patent database with data from 1989 to the present, and includes the patent number, classification, and title of patents.
  • Japan Patent Office
    A searchable database of Japanese patent abstracts, which includes the patent number, title, inventor, company, and abstract of the patent.
  • PubEAST and PubWEST Searching
    Covers 1920-most recent weekly issue. Onsite use at the Art, Architecture & Engineering Library.
  • Free Patents Online
    Covers patents and applications from USPTO, EPO, WIPO and JPL abstracts

Other USPTO Resources

The US Patent & Trademark Office (USPTO) has many resources available online. Below are some of the resources available. For a complete listing of USPTO web resources and their limitations, please see the USPTO website.

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