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Specialized database offering free access to more than 90 million patents registered worldwide from 1836 to today. Very complete, this database provides information on inventions and technical developments imagined over the past 180 years. It allows you to search according to where the patent was filed - in Europe or elsewhere in the world.

Patents are legal titles protecting inventions. They have an exclusive and temporary right to prohibit others from using their patented invention.

First of all, choose what you are interested in: "Worldwide" for worldwide patents, "EP" for European patents.

From the interface, you can:
- or enter your search using keywords, separated by a space (SmartSearch). Use boolean operators and truncations.
- or carry out your search from the classification, that is to say by research area as identified in the database.

Domains are identified by letters and contain subdomains to refine your list of results.

Recall truncations:
* Replaces a string
? Replaces a character or void
# Replaces a character

Reminder of Boolean operators (in lowercase or uppercase):
And / AND combines concepts
Or / OR combines synonyms
Not / NOT excludes search terms

On the Worldwide basis, you can use only 3 operators per input field, while there is no limit on the European base. If you combine operators, use parentheses to do nested searches.

How are patents identified?
The names of the patents are composed of the first two letters of the country where they were deposited and the patent number:

How do I view the patents that interest you?
From your results page, in the left column, click on "original document"
You will be able to consult the patent directly on the screen.
Turn the pages with the toolbar of the database because the pdf does not work online.

How to refine your search to get relevant results?
On the "Advanced Search" page, you can:
- search by patent number in the second section of the page.
- Restrict the search by period of time by indicating the one you are interested in.
To restrict the search to a period, use the ":" between your start and end year.

How to save your search equation?
In the "Settings" tab, at the top of the Espacenet search screen, you must check the "Enable Query History" option.
Your searches will be kept as long as you consult the database from your personal computer without deleting the cookies.

How to keep patents found?
- To save / print a patent of up to 500 pages for EPs and WOs, click on "Print Full Document" located above the document and follow the instructions. For a longer document, you can save it only page by page. Espacenet recommends working with at least version 7 of Adobe Reader.
- You can store up to 100 patents in the "My Patent List" section.
- Patents can be found in the "My Patent List" section up to one year after registration - only from your personal computer and provided that you retain cookies for the Espacenet site.
This list is exportable in CSV format in Excel. Click on "export" and then "save" from the list of patents.

Did you know ?
Two classifications are used in the Espacenet patent database:
- The International Patent Classification (IPC), a hierarchical technical classification system applied to patent documents published.
- The European Classification (ECLA), used by the EPO to conduct searches on patent applications. It is based on the IPC but is more detailed.