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https://api.maxwellinternational.ai/v1/uspto/patent

US patent search by keywords (?q=, every word must match; up to 10 USPTO applications and grants, newest filing first) or one patent by number (?patentNumber=US11000000). Each result: title, assignee, inventors, CPC classes, filing and grant dates, USPTO status, and patentNumber for granted patents or applicationNumber for pending applications. Uncached: 404, not charged.

last updated: Oct 8, 2026 · type: http · x402 v2

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