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The ultimate developer-first trademark search API. Search, analyze, and monitor trademarks across USPTO, EUIPO, UKIPO, and WIPO with a unified, intelligent API.

Quick Start

Get up and running in 5 minutes

API Overview

Explore all endpoints and features

OpenAPI Spec

View the full API specification

Get API Key

Sign up and start building

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Why Signa?

Search USPTO, EUIPO, UKIPO, and WIPO with a single API call. No need to integrate with multiple trademark offices or deal with different data formats.
Get intelligent risk assessments, class suggestions, and actionable recommendations. Our AI analyzes conflicts and suggests alternatives automatically.
Consistent data structure regardless of trademark office. We normalize statuses, classifications, and metadata so you don’t have to.
Set up webhooks to get notified when new trademarks are filed or statuses change. No polling required.
Simple REST API, comprehensive docs, code examples in multiple languages, and responsive support.

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Quick Example

curl "https://api.signa.so/v1/search?q=apple&office=USPTO" \
  -H "Authorization: Bearer YOUR_API_KEY"

{
  "results": [
    {
      "id": "tm_us_1234567",
      "mark": { "text": "APPLE", "type": "word" },
      "status": { "unified_status": "live_registered" },
      "owner": { "name": "Apple Inc." },
      "classes": [9, 35, 42]
    }
  ]
}

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Key Features

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Search & Discovery

  • Text Search - Search trademarks by text with filtering options
  • Image Search - Find visually similar logos and design marks
  • Advanced Filters - By jurisdiction, class, status, owner, and more

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AI Analysis

  • Conflict Check - Lightning-fast trademark conflict detection
  • Clearance Search - Comprehensive AI-powered clearance analysis
  • Class Suggestion - AI-powered Nice class classification
  • Risk Scoring - Automatic risk level detection (CLEAR, LOW, MEDIUM, HIGH)

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Monitoring

  • Real-Time Webhooks - Get notified of new filings
  • Status Tracking - Monitor trademark lifecycle
  • Portfolio Management - Track renewal dates
  • Competitor Watching - Monitor industry filings

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Coverage

OfficeTrademarksCountries
USPTO3.5M+United States
EUIPO2M+27 EU countries
UKIPO500K+United Kingdom
WIPO1.5M+130+ countries
Total: 147M+ trademark records

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Use Cases

E-commerce Sellers

Check product names for trademark conflicts before listing on Etsy, Amazon, or Shopify.

Naming Agencies

Verify brand name availability across multiple jurisdictions for clients.

Law Firms

Conduct preliminary clearance searches and monitor client portfolios.

Startups

Validate company and product names before launch to avoid rebranding.

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Getting Started

1

Get an API Key

Sign up at signa.so/dashboard and generate your API key.
2

Make Your First Request

Follow our Quickstart Guide to make your first API call in minutes.
3

Integrate

Use our comprehensive API documentation and code examples to build your integration.
4

Go Live

Deploy to production with confidence using our reliable infrastructure and support.

Authentication

Learn about API keys and security

Rate Limits

Understand the credit system

Webhooks

Set up real-time monitoring

Error Handling

Handle errors gracefully

Data Sources

Data freshness and quality

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Need Help?

Dashboard

Manage keys and view usage