Are you familiar with Y02/Y04S?

If you are a user of the Y02/Y04S classification scheme for climate change mitigation technologies, we invite you to participate in a short survey. It will only take a few minutes of your time and your answers will help us to improve the scheme further.
You can complete the survey in English, German or French language

Take the survey


14.8 CPC in XML (ex ECLA in XML)

Désolé. Actuellement, cette page n'existe pas en français.

Product 14.8

Cooperative Patent Classification (CPC) in XML


The CPC is a joint EPO-USPTO project aimed at developing a common classification scheme for technical documents, in particular patent publications, which will be used by both offices in the patent granting process. Cooperative Patent Classification (CPC) scheme and some finalised CPC definitions were officially launched on 1 January 2013.

The CPC scheme is initially based on the European Classification (ECLA), keeping all its properties.

In addition to the former ECLA groups, the CPC scheme also includes:

  • all former EPO ICO (indexing) codes,
  • the vast majority of former EPO “keywords(KW)”, which were converted to valid ECLA/ICO symbols before becoming CPC symbols,
  • some more entries originating from the US patent classification, e.g. further subdivisions for “Business Methods”,
  • USPC cross-reference art collections [XRACs] and digests.

For more information on CPC please see:

Quick Navigation