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USPTO Patent Application Prosecution History Timeline
USPTO Patent Application Prosecution History Timeline is a paid API for AI agents from agents.x402stock.xyz, paid per call via MPP, $0.02/call, status unknown (last checked 2026-10-27).
Returns the chronological prosecution-history timeline for a single USPTO patent application, listing all events (office actions, allowances, grants, abandonments) newest-first.
Price / call$0.02
Success—
StatusUnknown
How this service works
Prosecution-history timeline for a patent application (USPTO)
Output
A JSON object containing the USPTO source label, an as_of timestamp, the application number, the count of events returned, and an ordered array of transaction objects — each with a date string, a USPTO event code, and a human-readable description of the event (e.g. 'Non-Final Rejection', 'Notice of Allowance', 'Issue Fee Payment Verified'). Events are ordered newest-first.
Example use cases
IP due diligence for acquisition target
“I'm evaluating a startup's patent portfolio — can you pull the prosecution history for application 16847291 and tell me if it's been allowed, abandoned, or is still pending with any recent office actions?”
Monitor pending patent for grant
“Check the USPTO prosecution history for my patent application 17654321 and show me the most recent 20 events so I can see if we've gotten an allowance or notice of grant yet.”
Litigation risk assessment on competitor patent
“I need to assess the prosecution history of a competitor's patent application 15432876 — fetch the full timeline up to 200 events so I can spot any rejections, interviews, or narrowing amendments that might affect claim scope.”
Technical details
Endpoint
GEThttps://agents.x402stock.xyz/api/v1/patent/{application}/transactions?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need the detailed chronological event log of a single patent application's journey through the USPTO — including all office actions, responses, allowances, abandonments, and fee events. Prefer this over a simple patent status lookup when you need momentum or risk assessment based on the full history, when evaluating IP portfolios for M&A due diligence, or when tracking a pending application for grant milestones.
Side effects
- Invalid or non-existent application number returns empty transactions array or 404
- Application number with no recorded transactions returns count 0 and empty array
- limit parameter out of range (>200 or <=0) returns validation error
- Payment failure via x402/USDC returns 402 Payment Required before data is served
- USPTO source temporarily unavailable may return stale or error response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | |
| applicationrequired | string | The application path parameter. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| as_ofrequired | string | |
| countrequired | number | |
| sourcerequired | string | |
| attributionrequired | string | |
| transactionsrequired | array | |
| application_numberrequired | string |
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