https://www.epo.org/en/service-support/faq/what-data-epo-giving-codefest-participants-access

What data is the EPO giving CodeFest participants access to?

The successful candidates selected from all those who have completed the registration process will be given free access to two EPO products: our EP full-text dataset and Open Patent Services (OPS).

Access to the EP full-text dataset provides the successful candidates with the full text of the entire collection of EP publications (A and B). Further information on the EP full-text dataset.

OPS data is extracted from the EPO's bibliographic, worldwide legal event, full-text and image databases and is therefore from the same sources as used for Espacenet and European Patent Register data. For further information on OPS.