USPTO API

Free to Use Varies (check documentation)

Overview

The USPTO API provides access to US patent data including full-text patents, patent grants, and trademark records. You can search patents by keyword, inventor, or filing date. It is a great resource for researchers and developers interested in intellectual property data.

💡

Beginner Tip

Start with the Open Data Portal at developer.uspto.gov for cleaner REST endpoints. The main site URL points to documentation, so look for the PatentsView or BDSS API for programmatic access.

Available Data

Use case: Integrate usa patent api services data into web and mobile applications
USPTO data via REST API
JSON-formatted response data
Freely accessible without authentication

Example Response

JSON Response
{
  "status": "success",
  "data": {
    "result": "Data from USPTO",
    "description": "USA patent api services",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

patent_number The unique identifier of the patent, e.g. "9876543".
patent_title Official title of the patent as filed with the USPTO.
patent_date Grant date of the patent in YYYY-MM-DD format.
inventor_last_name Last name(s) of the patent inventor(s).
assignee_organization Company or organization that owns the patent rights.

Implementation Example

const url = "https://www.uspto.gov/learning-and-resources/open-data-and-mobility";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

No results returned Query syntax for patent searches can be strict; special characters in patent numbers may cause issues.
Use PatentsView query syntax (e.g., {"_text_phrase":{"patent_title":"solar"}}), URL-encode your parameters.
429 Too Many Requests The USPTO APIs enforce rate limits on free access.
Add delays between requests and cache results locally; consider applying for a higher-rate API key at developer.uspto.gov.
Empty or malformed JSON response Some USPTO endpoints return XML by default.
Add an Accept: application/json header or append &format=json to your query string.

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 15/20
🔒 Security 15/15
🛠 Developer XP 15/20
✓ Reliability 7/15
Response Time 276ms

Fully tested on Apr 5, 2026

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS UNKNOWN
Category Patent
Difficulty Beginner
Verified: 2026-04-07

Similar APIs

View All →