/jplatpat/patents/search

POST /api/jplatpat/patents/search

Price: 20 credits

Search Japanese patents and utility models on J-PlatPat (INPIT / JPO) by free-text keyword. Returns matching records with title, applicants/right holders, application/publication/registration numbers, dates, FI classifications and internal document id.

How to use it

Search Japanese patents / utility models by keyword (matches title, abstract and other indexed text). Returns up to count records, each with title, applicants, number variants, dates and FI classifications. Use a specific keyword: very broad terms can match too many records to return.

Parameters

• access-token string required

Request body

• timeout integer — Max scrapping execution timeout (in seconds) (default: 300; min: 20; max: 1500)
• keyword string required — Free-text search keyword (examples: "人工知能"; minLength: 1)
• count integer required — Max number of results (min: 1; max: 3000)

Response

• @type string (default: "JplatpatPatent")
• isn string required
• law_division string nullable
• applicants array (default: [])
• app_number string nullable
• publication_number string nullable
• registration_number string nullable
• exam_pub_number string nullable
• priority_number string nullable
• app_date string nullable
• known_date string nullable
• classifications array (default: [])
• status string nullable

Errors

• 422 — Keyword matched too many results to return — use a more specific keyword Check the fields against this schema. A URN with the wrong prefix is the most common cause.
• 408 — The request ran past its time limit Raise `timeout` in the request body, up to the maximum this endpoint documents. Lowering `count` or turning off the `with_*` flags also helps, because less work finishes sooner.
• 412 — The entity was not found, or a precondition failed Retrying will not help: either the entity does not exist, or the input points at a different one.
• 429 — Too many requests: a rate limit or a usage window is exhausted When the response carries an X-Retry-After header, wait that many seconds and retry: the same number is in the body as `detail.retry_after`, and the limit clears once that window passes. The message in the body names the limit that was hit.
• 500 — Something broke on our side Retrying will not help. If it keeps happening, send us the X-Request-ID from the response headers.
• 529 — Rate limit reached, or the endpoint is overloaded Wait at least 30 seconds, then retry.

Response headers

• X-Error — Error message text (present only on error)
• X-Request-ID — Unique request identifier
• X-Execution-Time — Execution time in seconds
• X-Result-Count — How many records the body carries. 0 means an empty result, which is a normal answer and not by itself an error. A non-zero count can come back together with X-Error when the failure happened partway through — read this header and X-Error independently.
• X-Total-Available-Results — How many records exist for this query, when the endpoint can say. On a `dry_run` request this is the answer and the body is empty. It saturates: the endpoint's documented maximum means 'at least that many', any smaller number is exact.
• X-Warning — Present when the request body carried keys this endpoint does not document. They were ignored, so any filter you meant to apply through them did not apply. Check the spelling against this schema and retry.
• X-Retry-After — Seconds to wait before retrying. Present only on 429.