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Patents and Trademarks

Overview of the U. S. Patent & Trademark Office's search engines and tutorials

Non-government guides

  • Google Patents - Google's beta US patent search site
  • pat2pdf.org - Free patent printing site (US only)
  • Free Patents Online - Full text of U.S. patents back to 1974. Full patent downloads in PDF format.
  • Patents.com - Includes full text of US and European patents.
  • Patent Lens - Includes US patents from 1976 on.  Also European, World, and Australian patents. Contains patent applications from US, World, and Australia.

Other resources