Global Prior-Art Patent Invalidator

$1.00 USDC per call · Legal and patents · POST /api/v1/find-prior-art · Id prior-art-invalidator

Screens a patent's claims against scholarly literature published before the priority date (arXiv, OpenAlex, Europe PMC, Crossref, HAL, J-STAGE; English, Chinese, Japanese, German; not patent databases). Give claims plus a priority date, or a patent number to read them from Google Patents. Claims are split into elements in code; every claim-chart quote is verified verbatim against the title or abstract. Returns a headline decision (anticipation likely / obviousness likely / insufficient evidence), a rule-based invalidation score, 102 and minimal 103 paths, and a draft IPR / reexamination brief with [PLACEHOLDERS] for a registered practitioner to review. Abstract-level evidence only; not legal advice.

What you get

A professional invalidity search and claim chart typically costs thousands of dollars and weeks; this screens the scholarly literature in about a minute and returns a decision, a verbatim-quoted claim chart and a draft brief to hand to a practitioner, so you learn early whether a deeper search or an IPR / reexamination filing is worth paying for.

Call it

Send the JSON body below to https://agents.writerslogic.com/api/v1/find-prior-art. An unpaid request answers 402 with the price and how to pay; a request that fails with a 5xx status is not charged.

curl -i -X POST https://agents.writerslogic.com/api/v1/find-prior-art \
  -H 'content-type: application/json' \
  -d '{"priorityDate":"2017-06-01","patentClaimsText":"1. A method of approximate nearest neighbor search comprising: hashing each data vector with a plurality of locality-sensitive hash functions to generate hash codes; storing the vectors in hash tables indexed by the hash codes; and, for a query vector, retrieving candidate vectors from the buckets matching the query'\''s hash codes and ranking the candidates by exact distance to the query vector."}'

Input

Field	Type	Required	Description
`patentClaimsText`	string; length 20..20000	no	Claims to attack, numbered as in the patent (e.g. "1. A method ..."). Optional when patentNumber is given: the independent claims are then read from Google Patents. A dependent claim is charted with every element of its parents.
`priorityDate`	string	no	Earliest effective filing/priority date, YYYY-MM-DD. Only works published strictly before it count. Optional when patentNumber is given; a supplied date wins over the Google Patents date and a disagreement is reported.
`patentNumber`	string; length 0..40	no	Publication number such as US7629993B2. Claims, priority date and cited art are read from Google Patents when the claims or the date are omitted, and the date is cross-checked otherwise. Required unless both patentClaimsText and priorityDate are given.

Example request body

{
  "priorityDate": "2017-06-01",
  "patentClaimsText": "1. A method of approximate nearest neighbor search comprising: hashing each data vector with a plurality of locality-sensitive hash functions to generate hash codes; storing the vectors in hash tables indexed by the hash codes; and, for a query vector, retrieving candidate vectors from the buckets matching the query's hash codes and ranking the candidates by exact distance to the query vector."
}

Result

The response is { "data": ..., "_provenance": ... }. data carries these fields; _provenance is a signed W3C Verifiable Credential with a C2PA-style manifest, checked free at POST /api/v1/verify-provenance.

Field	Type	Required	Description
`headline`	object	no	Decision first: the verdict, the dollars at stake, confidence and the exact next step.
`iprBrief`	object	no	Draft starting point for an IPR petition or ex parte reexamination request: citations, per-claim grounds with verbatim quotes, and open items. Placeholders in [BRACKETS]; for attorney review.
`timing`	object	no	Elapsed milliseconds, the run's budget, and any stage dropped or skipped to stay inside it.
`verdict`	string; one of "ANTICIPATION_LIKELY", "OBVIOUSNESS_LIKELY", "INSUFFICIENT_EVIDENCE"	no
`abstentionReason`	one of	no
`invalidationProbability`	integer	no	0-100; minimum over claims, capped at 85 by the abstract-level evidence penalty.
`anyClaimInvalidationProbability`	integer	no
`confidence`	string; one of "HIGH", "MEDIUM", "LOW"	no
`probabilityComponents`	one of	no
`claims`	array<object>	no
`best102`	one of	no
`best103`	array<object>	no
`claimChart`	array<object>	no
`references`	array<object>	no
`gaps`	array<string>	no
`whatWouldChange`	array<string>	no
`searchCoverage`	object	no
`ensemble`	object	no
`cutoff`	string	no
`priorityDateCheck`	object	no	Which priority date was used (input or Google Patents), both values, and whether they disagree.
`provenance`	object	no	Where the claims came from and which steps were deterministic.
`patent`	one of	no	Google Patents data used: status, claims read, citations read and the citation titles used as search seeds.
`disclaimer`	string	no

Pay and connect

Available through: x402 (USDC on Base), MCP, RapidAPI, Apify.

Machine-readable

This agent as JSON (schemas, example, OpenAPI operation)
Free signed sample response
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