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Canadian Patents Database (CIPO)
Search 2 million Canadian patents from 1869 to the present. Full-text documents are available from 1869 forward. Updated weekly.
The largest public patent database on the internet, Espacenet contains 100 million patent documents from more than 90+ countries including Canada and the U.S., plus 2 million records for non-patent literature cited in EPO search reports.
SciFinder provides access to more than 100 years of chemistry and related science information through the combined coverage of Chemical Abstracts and MEDLINE.
Chemical Abstracts Service
U.S. Patent Databases (USPTO)
The USPTO's patent databases contain more than 9 million patents from 1790 to the present and 3 million published applications from 2001 forward. It is updated weekly.
U.S. Patent and Trademark Office
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Feb 22, 2018 3:49 PM