markerapi

markerapi.com

A REST API that searches the US trademark (USPTO) database by serial number, trademark, owner, expiration date, or product/service description and returns JSON results.

The markerapi API uses other authentication; has freemium pricing; offers a free tier (1K searches a month FREE). Verified 2026-07-12 with per-field source links.

Other Verified 2026-07-12 medium confidence

Base URL

https://markerapi.com/api/v2/trademarks/

markerapi.com ↗

Auth

other

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Free tier

1K searches a month FREE

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Pricing model

freemium

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Pricing

1K searches/month free; 10K/month $25 USD; 250K/month $50 USD; 10M/month $100 USD

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Rate limits

not documented null

no source

OpenAPI spec

not documented null

no source

MCP server

not documented null

no source