Comparison

Signa vs USPTO API:
Unified commercial API vs government data source

The USPTO offers free APIs for US trademark data. Signa offers a unified API across 200+ offices. Should you build on the government API or use a commercial solution?

At a Glance

Signa vs USPTO TSDR API Overview

Signa

Unified global trademark API

  • 200+ trademark offices in one API — not just USPTO
  • Full-text search API (USPTO has no search API)
  • Clean, normalized JSON with 50+ fields per record
  • Advanced matching: fuzzy, phonetic, image similarity
  • Clearance analysis and risk scoring
  • Monitoring with webhooks — no polling needed

USPTO TSDR API

Free US trademark status and document retrieval

  • Completely free — no cost for any usage
  • Official government data source
  • Document retrieval (PDFs of filings)
  • Assignment/transfer records
  • Bulk data downloads available (XML)
  • Authoritative US trademark data

Feature Comparison

Feature
Signa
USPTO TSDR API

Coverage

Offices covered

200+
1 (USPTO)

US trademark data

Yes
Yes

International data

200+ jurisdictions
No

EU trademarks

Yes
No

WIPO Madrid data

Yes
No

API Capabilities

Full-text search

USPTO retired TESS; new search system has no API

Yes
No search API available

Lookup by serial/reg number

Yes
Yes

Fuzzy matching

Yes
No

Phonetic matching

Yes
No

Image similarity

Yes
No

Owner search

Yes
No

Classification search

Yes
No

Document retrieval

Yes
Yes

Clearance analysis

Yes
No

Rate Limits & Performance

Rate limit

Per plan (generous)
60 requests/minute

PDF download limit

Included in plan
4 requests/minute

Average response time

Under 300ms
Varies (500ms-5s)

Uptime SLA

99.9%
No SLA (government service)

Data Quality

Data normalization

Fully normalized JSON
Raw XML/JSON (inconsistent)

Entity resolution

Deduplicated owners, attorneys
Raw strings (no dedup)

Similarity scoring

Yes
No

Enriched metadata

Yes
No

Fields per record

50+
Varies by endpoint

Developer Experience

OpenAPI specification

Yes
Partial (Swagger for TSDR)

SDKs

Python, Node.js, Go
None

Webhooks

Yes
No

Documentation quality

Comprehensive with examples
Scattered across portals

Signup time

Under 5 minutes
~30 minutes (multi-step)

Cost

Price

Free tier + paid plans
Completely free

Infrastructure cost

None (managed service)
You build and maintain

Data normalization cost

Included
Engineering time to normalize

Total cost of ownership

API subscription
Free API + significant engineering

Our Analysis

The Verdict

The USPTO API is free but limited — it offers status lookup and document retrieval for US trademarks only, with no search API, low rate limits, and raw unnormalized data. Signa provides a complete trademark intelligence platform with search, clearance, monitoring, and normalized data across 200+ offices. The USPTO API is a data source; Signa is a product.

Best for

Signa

  • Any project needing trademark search (USPTO has no search API)
  • Applications requiring international trademark data
  • Teams that want clean, normalized data without parsing XML
  • Projects needing clearance analysis or monitoring
  • Products that can't afford government-API rate limits and downtime

Best for

USPTO TSDR API

  • Simple US trademark status lookups by serial number
  • Downloading official filing documents (PDFs)
  • Research projects with minimal API needs and no budget
  • Checking assignment/ownership transfer records
  • Bulk data analysis using XML downloads (with engineering capacity)

Recommendation

Use the USPTO API for free document retrieval and status lookups. Use Signa for everything else — search, clearance, monitoring, and international coverage. Many teams use both: Signa for core search and the USPTO for occasional document retrieval.

FAQs

Common questions about Signa vs USPTO TSDR API

Need more help? Check our documentation

Signa vs USPTO TSDR API

Need more help? Check our documentation

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