GET/googlepatents/classificationapiKey1 credit/request
Returns a CPC classification symbol's official title, its position in the classification tree (parent/child symbols), related symbols, and its full scope-note description. Accepts a symbol at any level, e.g. a section ("A"), a class ("A61"), a subclass ("A61K"), or a full group/subgroup ("A61K31/00"). Public data, sourced from Google Patents' own search API.
Required: code.
Sampled 14 Oct 2026: 41 items. Filled in every item: code, name. Not in every item: is_parent (2), is_child (22), is_related (17), description (17). In the sample: name: “A - HUMAN NECESSITIES” and 40 other values; is_parent: true in 2 of 2; is_child: true in 22 of 22; is_related: true in 17 of 17; description: “Sex sterilants for invertebrates per se” and 16 other values.
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GET/googlepatents/coverageapiKey1 credit/request
Returns how many patent grants and applications Google Patents has indexed, per patent office/country, per year, across every authority it covers. Public data, sourced from Google Patents' own search API.
Takes no parameters.
Sampled 14 Oct 2026: 107 items. Filled in every item: country_code. Not in every item: years (106). In the sample: years: median 49 entries.
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GET/googlepatents/detailapiKey2 credits/request
Returns a single patent's detail: title, abstract, inventors, assignees, dates, legal status, CPC/IPC classifications, claims, description, patent citations, cited-by patents, family members, and similar documents. `number` is a publication number such as `US10758101B2`, `EP1000000A1`, or `WO2020123456A1`. To search or browse by keyword, inventor, or assignee instead of a known publication number, use `/googlepatents/search`.
Required: number. Optional: lang.
Sampled 14 Oct 2026: 63 items. Filled in every item: code, description, is_cpc. In the sample: description: “HUMAN NECESSITIES” and 24 other values; is_cpc: true in 63 of 63.
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GET/googlepatents/recentapiKey2 credits/request
Returns the patent publications Google Patents' bulk sitemap indexes for one ISO 8601 week (format YYYY-Www, e.g. "2026-W20"): publication number, title, and detail-page URL for each. Useful for browsing recently published patents without a search query. Public data, sourced from Google Patents' own sitemap.
Required: week.
Sampled 14 Oct 2026: 176375 items. Not in every item: publication_number (500), title (500), url (500). In the sample: publication_number: “JP7857109B2” and 499 other values; url: patents.google.com; title: “Reciprocating compressor” and 499 other values.
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GET/googlepatents/searchapiKey2 credits/request
Searches Google Patents' full index by free-text query, with optional inventor, assignee, patent office, status, type, language, and date filters. Returns a page of hits plus top-assignee/top-inventor/top-classification breakdowns over the full result set.
Required: q. Optional: inventor, assignee, country, status (2 allowed values: GRANT, APPLICATION), type (2 allowed values: PATENT, DESIGN), language (16 allowed values: ENGLISH, GERMAN, CHINESE, FRENCH, SPANISH, ARABIC, JAPANESE, KOREAN, PORTUGUESE, RUSSIAN, ITALIAN, DUTCH, SWEDISH, FINNISH, NORWEGIAN, DANISH), date_field (3 allowed values: priority, filing, publication), before, after, sort (3 allowed values: relevance, new, old), num, page.
Sampled 14 Oct 2026: 10 items. Filled in every item: publication_number, title, snippet, priority_date, filing_date, grant_date, publication_date, inventor and 6 more. Not in every item: thumbnail_url (4). In the sample: priority_date: 2010-04-26 to 2021-07-26; publication_number: “CN113650574B” and 9 other values; thumbnail_url: patentimages.storage.googleapis.com; is_similar_document: true in 10 of 10; snippet: median 298 characters; country_status: median 1 entry; title: “Battery electricity supplementing system for vehicle” and 9 other values; filing_date: 2010-04-26 to 2021-07-26.
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GET/googlepatents/suggestapiKey1 credit/request
Returns Google Patents' own autocomplete suggestions for an inventor or assignee name as the user types, the same suggestions shown by the Inventor/Assignee fields on Google Patents' advanced search page. Public data, sourced from Google Patents' own search API.
Required: field (2 allowed values: inventor, assignee), value.
Sampled 14 Oct 2026: 5 items. Filled in every item: value. In the sample: value: “Mark Thomas Johnson” and 4 other values.
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