Skip to main content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

You can still access the UC Berkeley Library’s services and resources during the closure. Here’s how.

Patents: Patents

Finding Patents

A patent can be used as a source of information to learn about a product or process or to track trends and changes in technology. There are many different ways to search for patents, including (but not limited to) keyword, author, company/institution, patent number, or classification code.

If you would like more information or assistance on searching for patents, contact the Engineering Library.

U.S. Patents

International Patents

  • Patent Lens
    Search data from the World Intellectual Property Organization, European Patent Office, U.S. Patent Office, and the Australian Patent Office.
     
  • World Intellectual Property Organization (WIPO) 
    Search international patent applications.
     
  • FreePatentsOnline 
    Search U.S. and foreign patents, published patent applications, product literature, and other non-patent literature. Must create a free account in order to view images.
     
  • Derwent Innovations Index (UCB access only)
    Includes Derwent World Patent Index as well as Patents Citations Index. Patent coverage from 1963-present. Citations coverage from 1973-present.

Canadian Patents

  • Canadian Intellectual Property Office 
    Bibliographic databases (titles, names, dates, and classifications) available from 1869–present, images from 1920–present, and text databases from 1978–present.

European Patents

Japanese Patents

  • Japan Patent Office 
    Search Japanese patents and utility models, design applications, and trademarks.