PRODUCT DETAILS

PatentRef

US patent claims as a tree, through a free API

Launch date · UTC: 2026-11-10
Domain: patentref.io
Domain ending: .io
Category: Developer tools

About this product

A free US patent API in the PatentsView format for grants since 1976, plus a claim tree for every patent: claims split into their parts, each reference linked to its earlier mention, every part with offsets into the text. Deterministic code, no model.

Keywords

APIdata structurepatent data