2s.io

List every document in the file wrapper for a US patent application. Returns each document with its USPTO code (e.g. CTNF non-final OA, CTFR final OA, IDS, WCLM claims worksheet, NOA notice of allowance), human-readable description, official date, direction (INTERNAL/INCOMING/OUTGOING), and available formats with page counts. Includes patentCenterUrl pointing at the public USPTO Patent Center documents page for direct PDF download. Application number is the 6-10 digit USPTO ID. -- reliability 91

How to call

curl -X POST https://2s.io