classificationWorldwidefree
Cooperative Patent Classification (CPC)
- Purpose
- The finer EPO/USPTO classification (250,000+ groups) used in Espacenet and Google Patents.
- Coverage
- CPC scheme and definitions; revision notices.
- Access conditions
- Free
- Region
- Worldwide
- Link
- https://www.cooperativepatentclassification.org/
- Review date
- 29 Oct 2026
- Link check
- Reachable when checked on 28 Oct 2026
- Tags
- classification