classificationWorldwidefree
International Patent Classification (IPC)
- Purpose
- The hierarchical classification used by every patent office; use it to search by technology instead of by words.
- Coverage
- IPC scheme, catchword index, IPC-CPC concordance.
- Access conditions
- Free
- Region
- Worldwide
- Link
- https://www.wipo.int/classifications/ipc/en/
- Review date
- 29 Oct 2026
- Link check
- Reachable when checked on 28 Oct 2026
- Tags
- classification