uspto-database

Overview

The USPTO provides two primary programmatic access points for patent data: the PatentsView API (REST, free, no key required for basic use) for structured queries by inventor, assignee, CPC classification, and keywords; and Google Patents Public Data (BigQuery public dataset) for large-scale analytics across the full patent corpus. Both expose data under the CC0 Public Domain Dedication. This skill covers Python-based access patterns for both, plus basic patent portfolio analytics.

When to Use

• Prior art search: Finding existing patents relevant to a technology before filing or to assess freedom-to-operate.
• Competitor IP landscape analysis: Querying all patents from a specific assignee (company or institution) to map their technology portfolio.
• CPC classification search: Finding patents in a specific technology area using Cooperative Patent Classification codes (e.g., C12N for nucleotides/genetic engineering).
• Inventor network analysis: Identifying prolific inventors in a field and their institutional affiliations.
• Technology trend tracking: Counting patent filings by year and technology category to identify emerging areas.
• Life sciences IP analysis: Searching biotech-specific classifications (A61K for pharmaceuticals, C12N for genetics, G16B for bioinformatics).
• For full-text patent PDF downloads, use the USPTO Bulk Data Storage System (BDSS) or Google Patents direct links.
• Rate limits: PatentsView API allows 45 requests/minute without an API key; request a free key for 45 req/min with higher daily limits.

Prerequisites