Open Patent Services (OPS)

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Open Patent Services (OPS) is a web service which provides access to the EPO's data via a standardised XML interface. It does this using RESTful architecture.

Test OPS

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 the Espacenet and European Patent Register data.

With OPS you can:

  • add EPO data to your own software applications or in-house databases
  • develop tailor-made clients
  • download large volumes of data
Getting started


Simply follow these five steps:

  1. Register to get access credentials
  2. Log in and define a test app for testing
  3. Test the system by clicking APIs in the menu
  4. Define your apps and handle authentication (using "OAuth")
  5. Add them to your script
"Non-paying" users Up to 4 GB of data per week Free
"Paying" users More than 4 GB of data per week Annual subscription:
EUR 2 800

For more information about what we consider to be appropriate usage see our:

Fair use charter

Terms and conditions for use of the EPO's Open Patent Services (OPS) 

Further information


Title Format
OPS OpenAPI specification YAML
OPS version 3.2 documentation – version 1.3.20 PDF
Open Patent Services input and output XML schema XSD
EPO St. 36 DOCDB exchange format for bibliographic data XSD
EPO St. 36 DOCDB full-text exchange format for full-text data (claims and description) XSD
Open Patent Services XML schema for legal status data XSD
Open Patent Services XML schemas for CPC:

CCD schema
CPC schema
CPC definitions






Open Patent Services XML schema for Patent Register XSD
Cross-domain requests PDF
Legal status tag definition PDF
CPC International documentation and sample package  ZIP
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