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Patents   Tags: engineering, government, patents  

How to find patents
Last Updated: Aug 1, 2014 URL: Print Guide RSS Updates
Patents Print Page

Sources of Patent & Trademark Information

  • European Patent Office
    A collection freely open to the world.
  • US Patent Office
    US Patent & Trademark Office (USPTO). Patents from 1790 through 1975 are searchable only by Issue Date, Patent Number, and Current US Classification.
  • LexisNexis Academic
    Click on US Legal and drop down to Patents on the left for patent search options.
  • FreePatentsOnline
    The FreePatentsOnline search engine is one of the most powerful, fastest and easiest patent search engines on the web.
  • Japan Patent Office
    Official site of the Japan Patent Office.
  • Japanese, Chinese or Korean Patent Help
    This virtual help desk provides answers to the most frequently asked questions on patents and patent information in China, India, Japan, and Korea. You can also find background information on filing trends and granting procedures and some guidance on common patent terminology of Asian patents.
  • Indian Patent Information Retrieval System
    Search for Indian patents


  • MIT Libraries Video Tutorials
    Short video tutorials for performing patent and trademark searches. Some of the information is specific to MIT, but much of it is universally applicable.

Books on patent searching

Related web resources

  • Comparison of Free Patent Databases
    A blog offering an interesting comparison of Google Patents, FreePatentsOnline,, Patents Lens, and the USPTO patent databases. The European Patent office is not included in the comparison.

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