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x402stock Patent Continuity Lookup
x402
x402stock Patent Continuity Lookup is a paid API for AI agents from x402stock.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).
Retrieves the patent continuity data (parent and child application relationships) for a given USPTO patent application number
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-call market and economic data API for AI agents: US stocks, ETFs and options, forex, crypto and on-chain perps, energy commodities, US and global macro (Fed, CPI, jobs, GDP, Treasury, World Bank), SEC filings, congressional trades, and market sentiment. No API keys, no accounts. Pay per request in USDC via x402 on Base.
Output
Returns a JSON object containing the application number, as-of timestamp, data source (USPTO), a list of parent applications (with status, filing date, relationship type, and application number), a list of child applications, and an attribution string.
Example use cases
Trace patent family lineage
“I'm doing due diligence on a company's IP portfolio — can you pull the full continuity chain for US patent application 17432891 so I can see what prior applications it came from and whether they've filed any child continuations or divisionals off it?”
Verify PCT national stage entry
“We're evaluating a licensing deal and need to know if US patent application 16842754 is a national stage entry from a PCT filing — can you check its parent application relationships and tell me what the original PCT number was?”
Map continuation-in-part relationships
“Can you look up the continuity data for patent application 18123456 and let me know if it's a continuation-in-part of an earlier application, and whether any new child applications have been branched off from it since filing?”
Technical details
Endpoint
GEThttps://x402stock.xyz/api/v1/patent/%7Bapplication%7D/continuity?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to trace the continuity chain of a specific US patent application — finding its parent PCT or prior applications and any child continuations. It sources directly from USPTO open data, making it reliable for IP research, due diligence, or patent family mapping without requiring a dedicated patent database subscription.
Side effects
- Invalid or malformed application number returns an error or empty result
- Application number not found in USPTO records returns empty parents/children arrays
- USPTO data portal unavailable causes a service error
- Payment failure via x402/USDC blocks request from being processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"as_of": "2026-06-18T12:00:00.000Z",
"source": "uspto",
"parents": [
{
"status": "Patented Case",
"filing_date": "2021-09-02",
"relationship": "is a National Stage Entry of",
"application_number": "PCTUS2021048783"
}
],
"children": [],
"attribution": "Source: U.S. Patent and Trademark Office (USPTO) Open Data Portal",
"application_number": "18687455"
}
}Tags
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