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Signa

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Trademark data is spread across more than 180 national and regional offices, each with its own database, format and update schedule. Signa brings it together in one API, built for developers and AI agents. Search, screen and monitor trademarks across USPTO, EUIPO, WIPO, UKIPO and more, with records updated daily from the official registers. Search a name and see identical and similar marks, including sound-alikes and spelling variants, with the reason each one matched. See a company's full portfolio across offices, subsidiaries included. Watch a mark, an owner or a class and get alerts with the opposition deadline attached. Use it through the API, SDK, MCP server or web app. Free to start, no card required.

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