Patent Search API
Query global patent filings by keyword, technology area, or assignee. Pre-shaped JSON for prior-art search, IP landscaping, and AI-driven R&D analysis.
What is Patent Search API?
Semantic search across global patent filings. Returns titles, abstracts, and source URLs ready for downstream LLMs.
- Endpoint
- POST /api/search/patents
- Authentication
- API key · x-api-key header
- Cost
- 80 credits / call
- Rate limit
- 30 req / min
- Response
- Structured JSON
Try Patent Search Live
Enter your API key and run a real query against the live endpoint.
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Integration guide
Copy a snippet, replace your API key, run. Works in any HTTP client — examples below in cURL, JavaScript, and Python.
/api/search/patentshttps://www.apipick.comSemantic search across global patent filings. Returns titles, abstracts, and source URLs ready for downstream LLMs.
querystringrequiredNatural-language search query
max_num_resultsintegeroptional1–5, default 5
relevance_thresholdnumberoptional0.0–1.0 quality filter
country_codestringoptionalISO country code (e.g. US, GB)
start_datestringoptionalISO date YYYY-MM-DD
end_datestringoptionalISO date YYYY-MM-DD
curl -X POST "https://www.apipick.com/api/search/patents" \
-H "Content-Type: application/json" \
-H "x-api-key: YOUR_API_KEY" \
-d '{
"query": "Find prior art for neural network training optimization techniques",
"max_num_results": 5,
"country_code": "US",
"start_date": "2026-01-01"
}'{
"query": "Find prior art for neural network training optimization techniques",
"results": [
{
"title": "Example result",
"url": "https://example.com/article",
"snippet": "Short excerpt of the page content…",
"source_type": "web",
"published_at": "2026-04-15",
"score": 0.92
}
],
"result_count": 1,
"credits_used": 80,
"remaining_credits": 99
}Rate limits
Throttling is per API key, sliding 60-second window. Hit the limit and you get a clean 429 with a Retry-After header.
30req/min
Per API key, per endpoint. Sliding 60-second window.
3concurrent
Max simultaneous in-flight requests per API key.
X-RateLimit-LimitMaximum requests allowed per minuteX-RateLimit-RemainingRequests remaining in the current windowX-RateLimit-ResetSeconds until the current window resetsRetry-AfterSeconds to wait before retrying (only on 429)HTTP/1.1 429 Too Many Requests
Retry-After: 12
X-RateLimit-Limit: 30
X-RateLimit-Remaining: 0
X-RateLimit-Reset: 12
{
"error": "rate_limit_exceeded",
"message": "Rate limit exceeded: 30 requests/minute per API key. Retry after 12s.",
"retry_after": 12
}Frequently Asked Questions
Which patent offices are covered?
Global filings — USPTO, EPO, WIPO PCT, JPO, KIPO, CNIPA, and major national offices. Search runs across a unified semantic patent index.
Can I filter by assignee or inventor?
Pass them as part of your natural-language query (e.g. assignee:Tesla battery thermal management). The semantic index resolves entity-style filters in the query string.
Date range filtering?
Yes. start_date / end_date in YYYY-MM-DD filter by filing or publication date.
How does pricing compare to direct USPTO search?
USPTO's public search is free but keyword-only and has no semantic ranking. This API runs cross-jurisdiction semantic search at 80 credits per call (≈ $0.08 user cost) — useful when you need ranked, LLM-ready results.
Tool schema?
GET /api/search/patents/tool-schema returns OpenAI function and Claude tool-use definitions.
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