patent dbUnited Statesfree
USPTO Patent Public Search
- Purpose
- Full-text search of US patents and published applications.
- Coverage
- US grants from 1790 (full text from 1976) and applications from 2001; CPC and USPC search; image viewing.
- Access conditions
- Free
- Region
- United States
- Link
- https://ppubs.uspto.gov/pubwebapp/
- Review date
- 29 Oct 2026
- Link check
- Reachable when checked on 28 Oct 2026
- Tags
- patents, us, full-text