{"uid":"cap_fDwV1bwW2RNnT8mjQ7DCZ","slug":"x402stock-patent-continuity-lookup-4b365e18","name":"x402stock Patent Continuity Lookup","description":"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.","url":"https://x402stock.xyz/api/v1/patent/%7Bapplication%7D/continuity?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"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"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_-FmQ-tmAtRf0_aBXYyG4m","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Retrieves the patent continuity data (parent and child application relationships) for a given USPTO patent application number","exampleAgentPrompt":"Can you look up the patent continuity data for US patent application number 18687455 — I want to see what parent PCT applications it came from and if it has any child continuations filed off it?","exampleUseCases":[{"title":"Trace patent family lineage","prompt":"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?"},{"title":"Verify PCT national stage entry","prompt":"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?"},{"title":"Map continuation-in-part relationships","prompt":"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?"}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T06:38:31.080Z","isFirstParty":false,"canonicalSlug":"x402stock-patent-continuity-lookup-4b365e18"}