APIs & SDKs
Signa
Global trademark API for search, screening, and monitoring across major trademark offices
- 0community votes
- 5DR by Ahrefs no change since last check
Ahrefs Domain Rating listed 6 Nov 2026, relisted 6 Nov 2026.
Search, screen, and monitor trademarks across USPTO, EUIPO, WIPO, UKIPO, and more with one unified API.
What it is
Signa: the homepage
Signa is a trademark API platform that lets developers search, screen, and monitor trademarks from major trademark offices through a single unified API. It covers over 40 million records from USPTO, EUIPO, WIPO, UKIPO, and more national registers, with records synced from official sources on their publication schedule.
The platform offers multiple solutions: trademark search with exact, fuzzy, and phonetic matching; trademark screening to flag potential conflicts before committing to a name; product listing scanning to check submissions for trademark conflicts before they go live; and monitoring to watch for new filings and get alerts when similar marks appear.
All features use a clean REST API with webhooks, normalize data across registers into one schema, and are designed for fast integration. Typical searches return in under a second, with 99.9% uptime target. The platform includes AI-powered matching to detect fuzzy, phonetic, and lookalike variations that keyword searches would miss.
Listed capabilities
- Exact, fuzzy, phonetic and lookalike matching across trademarks
- 40M+ trademark records from USPTO, EUIPO, WIPO, UKIPO and national registers
- REST API with webhooks and consistent schema across all registers
- Sub-1 second typical search response times
- 99.9% uptime target
- Trademark screening to flag conflicts before name commitment
- Product listing scan with automatic brand term extraction
- Trademark monitoring with alerts for new similar filings
- AI-assisted risk detection for fuzzy and lookalike matches
- Synchronous listing checks inline during publishing workflows
Pricing
Free plan: 10,000 credits on signup plus 1,000 credits per month. Starter: $99/month (billed yearly) with 20,000 credits per month, $10 per 1,000 extra credits. Growth: $399/month (billed yearly) with 100,000 credits per month, $5 per 1,000 extra credits. Scale: $999/month (billed yearly) with 500,0
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Signa metrics
| Metric | Value |
|---|---|
| Domain Rating | 5 no change since last check |
| Trust Flow | 0 no change since last check |
| Citation Flow | 23 no change since last check |
| Referring domains | 25 no change since last check |
| External backlinks | 35 no change since last check |
Ahrefs Domain Rating listed 6 Nov 2026, relisted 6 Nov 2026. Majestic listed 6 Nov 2026, relisted 6 Nov 2026. Link data listed by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
Signa domain listing data
Show the listing data
| Domain age | 1 year |
|---|---|
| Registered | |
| Expires | |
| Registrar | NameCheap |
| DNSSEC | Not signed |
Before you launch
The playbook on SaaS Directory List lists what to prepare, what to post on launch day and where else to list your product.
Compare and explore
Quick answers
What does a listing scan check?
You send the listing's title, plus an optional brand, description, keywords, Nice classes and jurisdictions. We extract the brand-like terms automatically, run each one against live trademark records, and roll the results into one verdict and recommended action for the listing. Images are not checked.
Are listing checks synchronous?
Yes. One request returns the assessment, so you can run it inline while a seller is publishing a listing or from a moderation queue.
What comes back when a conflict is found?
The response lists every flagged term with the marks behind it, plus a verdict (clear, caution or high risk) and a recommended action: approve, approve and monitor, review, or block. You decide what your platform does with it.
Do I need to tell you which words are brand names?
No. We identify which parts of a title like 'Wireless Earbuds for iPhone, Nike Style Sport Case' carry trademark risk, so a seller cannot bury a brand name in the middle of a description.
How do I integrate this with my platform?
It is a single REST endpoint: POST /v1/screening/listings with the listing JSON, get an assessment back. Call it from your listing-creation flow or moderation queue. The quickstart guide has copy-paste examples.
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