# USPTO Trademark Search API

**Canonical:** https://apis.io/providers/uspto-trademark-search-api/  
**APIs profiled:** 5

Instant trademark search and brand protection via the USPTO Trademark Search API. Check if a trademark keyword is available, search active trademarks, look up marks by serial number, and search by owner from United States Patent and Trademark Office data. Updated daily. Enables trademark availability checking, portfolio research, competitive intelligence, and due diligence workflows.

## Kin Score — 48.2 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 48.2).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 72.3 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 10.5 |
| Developer Ergonomics | 28.6 |
| Commercial Clarity | 50.0 |
| Access Clarity | 50.0 |

Regulatory layer — **Government & Public Sector**: 38.9 (matched via tags).

## Agent readiness — 41.8 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | na |
| Error Semantics | no |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | na |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (5)

- **USPTO Trademark Search API Database Status API** — Database freshness and update information
- **USPTO Trademark Search API Owner Search API** — Search trademarks by owner name
- **USPTO Trademark Search API Trademark Availability API** — Check if a trademark is available for registration
- **USPTO Trademark Search API Trademark Lookup API** — Retrieve trademark details by serial number
- **USPTO Trademark Search API Trademark Search API** — Search trademarks by keyword or phrase

## Agentic access (1)

- **Uspto Trademark Search Api Agentic Access** — 5 operations

## Security (2)

- **Uspto Trademark Search Api Authentication** — apiKey · 1 scheme
- **Uspto Trademark Search Api Domain Security** — TLSv1.3 · HSTS · DNSSEC

## Plans (1)

- **Uspto Trademark Search Api Plans Pricing**

## Tags

Brand, Brand Protection, Business, Data, Government Data, Intellectual Property, Legal, Search, Trademark, USPTO

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/uspto-trademark-search-api/). Scores are computed from the provider's own public artifacts under a published rubric.