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Finding Patent Full Text: Finding Patent Full Text
This guide teaches methods of retrieving the full text of a patent using Derwent Innovations Index, Esp@cenet, the U.S. Patent Office, and Patent Lens.
Need a Patent?
There are multiple resources for finding the full text of a patent using the patent number, patent title, and/or inventor. Depending on what you're looking for, you can retrieve patent full text from four different databases: Derwent Innovations Index, ESp@ceNet, the U.S. Patent and Trademark Office, and Patent Lens.
If you're looking for a European patent or a U.S. patent after the 1820s, useESp@ceNet. ESp@ceNet is run by the European Patent Office, containing full text of European and worldwide patents back to the 1970s. For more information, go to Using ESp@ceNet.
If you want to search the full text of a patent, use OLens. OLens searches patents from the U.S., Australia, Europe, and worldwide. Full text is available in HTML format and PDF format (for selected patents). For more information, go to Using OLens.
Using Patent Databases: General Tips
Search using the patent number whenever possible. Some databases rewrite the original title and abstract in their records, but the patent number stays the same. Most patent databases are searchable by patent number.
Unless specified otherwise, include the country code letters at the beginning of the patent number. Do not include a space between the country code and the patent number.
The letter and number appearing at the end of some patent numbers, known as the "kind code", can be omitted.
The author of a patent is called the "Inventor."
If an inventor submits a patent to different countries, the patent will be in a different patent family for each country.
The patent must be tailored for each country; for example, U.S. patents cannot include nuclear weaponry, so a nuclear patent with weapon applications may include that in other countries but not the U.S.
For scientists, different patent families are essentially identical, as the science itself will not change.
For medical research, the differences between patent families are important. The English version is useful to decide whether it's worth it to get the versions of the patent in others language translated.
If patent families are relevant to you, Derwent and ESp@ceNet provide the best family information.