Aapipick
Search API · Patents

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.

80 credits / call30 req / minPOST /api/search/patents

Try Patent Search Live

Enter your API key and run a real query against the live endpoint.

API Authentication Required
Enter your API key to access this service. All API calls require authentication.

Don't have an API key?

Sign in to your account to create and manage your API keys.

Sign InManage API Keys
5 sample queries — click to load

API Integration Guide

Learn how to integrate this API into your applications with code examples and detailed documentation.

API Overview
Semantic search across global patent filings. Returns titles, abstracts, and source URLs ready for downstream LLMs.
POST
/api/search/patents

Base URL

https://www.apipick.com

Full Endpoint

https://www.apipick.com/api/search/patents
Parameters
Required and optional parameters for this API
query
required
string

Natural-language search query

max_num_results
optional
integer

1–5, default 5

relevance_threshold
optional
number

0.0–1.0 quality filter

country_code
optional
string

ISO country code (e.g. US, GB)

start_date
optional
string

ISO date YYYY-MM-DD

end_date
optional
string

ISO date YYYY-MM-DD

Code Examples
Copy and paste these examples to quickly integrate the API into your application

cURL Request

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"
}'
Replace YOUR_API_KEY with your actual API key
Response Example
Example response from the API

JSON Response

{
  "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
}
Integration Tips

✓Best Practices

  • • Always include x-api-key header
  • • Always handle errors gracefully
  • • Validate input data before sending
  • • Use HTTPS for secure communication
  • • Cache responses when appropriate

ℹResponse Headers

  • • Content-Type: application/json
  • • x-api-key: Required for authentication
  • • Status codes: 200 (success), 400 (error), 401 (unauthorized)
  • • No rate limiting applied

Rate Limits

⏱️

Request Rate

30req / min

Per API key, per endpoint. Sliding 60-second window.

🔀

Concurrency

3concurrent

Max simultaneous in-flight requests per API key.

Response Headers

X-RateLimit-LimitMaximum requests allowed per minute
X-RateLimit-RemainingRequests remaining in the current window
X-RateLimit-ResetSeconds until the current window resets
Retry-AfterSeconds to wait before retrying (only on 429)

429 Too Many Requests

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.