Espacenet offers free access to more than 130 million patent documents worldwide, containing information about inventions and technical developments from 1836 to today. It has a user-friendly interface available in almost all European languages. It enables users with little or no experience in patent searching to obtain an overview of the state of the art, to follow new developments or to find out who invented what.
New Espacenet, a substantially revised and improved version of Espacenet with state-of-the-art features and enhanced functionality, was released in November 2019.
You can use Espacenet to:
Espacenet offers you a lot of useful information to help you with your searches. You can look for answers to your questions in these FAQs, the discussion forum, the application glossary or the What has changed document.
The glossary is accessible via the “Help” button in Espacenet.
No. Espacenet was set up to enable users to conduct their own searches in patent documents and to give them a wide range of search options.
The worldwide database contains information on published patent applications and granted patents from over 100 patent-granting authorities.
You should always check whether there are any gaps in the data provided.
The European Patent Register contains all the publicly available information on European patent applications as they pass through the grant procedure, including oppositions, patent attorney/EPO correspondence and more. This service also provides for public file inspection.
To access the European Patent Register from Espacenet, simply click on the Register hyperlink above the bibliographic data, description or claims views.
As in all other patent databases, the correctness of the data found under the legal events tab and the extent to which that data is up-to-date depends on the national patent offices. In particular, delays in the delivery of bibliographic or legal status data can vary significantly, depending on the country concerned and the time period covered.
To find out what the different codes mean go to Kind codes.
If you know the XP number you can search for citing patent documents with ct = [XP number]. In this way you can also find out more about the XP document itself.
In classic Espacenet it was possible to search for the applicant or inventor country with square brackets, e.g. pa = [de]. In new Espacenet this function is only possible via the filter function, where you can include or exclude individual applicant or inventor countries. The advantage of this approach is that you get a statistical evaluation of the applicant and inventor countries in the result set, without having to query each country individually.
The date for the migration of the national and regional interfaces from classic Espacenet to new Espacenet has not yet been decided. This means that the date for discontinuing classic Espacenet has not been decided yet either. It is planned that the links which work with classic Espacenet will also work with new Espacenet.