USPTO · Rate Limits

Uspto Rate Limits

USPTO does not publish a unified API rate-limit policy. Some APIs (e.g. TSDR) require a free API key and reference per-API "API Key Usage FAQs" for quotas; specific per-second numbers are documented at the individual API level rather than centrally. Migration to data.uspto.gov is in progress.

1 Limits Throttle: 429
Federal GovernmentIntellectual PropertyRate Limiting

Limits

Per-API Key Usage Policy key
varies
see per-API FAQ (e.g. TSDR API Key Usage FAQs)

Policies

Per-API Documentation
Each USPTO API exposes its own key-usage and quota documentation; consumers should review the relevant FAQ before integrating.
Bulk Data Alternative
For high-volume access, USPTO offers bulk data downloads via the Bulk Data Storage System; prefer those over high-frequency API polling.

Sources