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December 14, 2006

Patent Search Engines

There are a few free patent search engines available. Google, having kept the scanning gnomes up past bedtime, has all issued U.S. patents since Columbus was found to be infringing. There are also FreePatentsOnline and PatentReader, as well as the venerable USPTO search. Not exactly fun entertainment for the whole family, nor particularly industrial-strength.

What the professionals use is Delphion, as it has an excellent Boolean search engine, and a collection spanning US, EU, WIPO, German and Japanese patents, as well as other prior art. But you get what you pay for, and Delphion is $2800 per year for unlimited access.

For a listing of more prior art resources, skewed toward computer-related technologies, but also including electronics, semiconductors and telecommunications, check out the Patent Hawk Prior Art Sources web page. A pity that Patent Hawk doesn't do chemistry or bio-tech.

Posted by Patent Hawk at December 14, 2006 10:29 AM | Prior Art


I saw your website at http://www.patenthawk.com/blog/2006/12/patent_search_engines_1.html and wanted to recommend adding http://www.wikipatents.com to the page. WikiPatents has an extensive database of patents open for public comment on the internet, free patent translation into multiple languages, and allows PDF downloading of patents in addition to other free resources. It is a helpful site for anyone with patent related interests.

Have a great day,


Posted by: Jamie at February 26, 2008 1:55 PM