sunchendd/patent-search

Patent Search

Search Google Patents via Serper.dev API. Returns patent metadata including title, inventors, assignees, filing/publication dates, abstract, and PDF links.

Quick Start

# Keyword search
python3 scripts/patent_finder.py --keywords "machine learning" --limit 10

# Search by patent number
python3 scripts/patent_finder.py --patent "CN117453242A"

# JSON output for programmatic use
python3 scripts/patent_finder.py --keywords "孙晨东" --limit 20 --export json

Workflow

When a user requests patent search:

1. Confirm intent - Clarify: inventor lookup, competitor analysis, technology landscape, or infringement check
2. Build query - Extract keywords, inventor names, or company names from the request
3. Execute search - Run patent_finder.py with appropriate arguments
4. Filter results - Remove noise (matching text but not inventor/assignee), categorize by assignee
5. Generate report - Output findings in a structured format (see Report Template below)

Scripts

scripts/patent_finder.py

High-level CLI with analysis and export. Use for end-user queries.

--keywords / -k    Search query (supports Chinese, inventor names, company names)
--patent  / -p     Look up by patent number
--limit   / -l     Max results (default 20, per-page max ~10)
--page    / -pg    Starting page (default 1)
--export  / -e     Output format: console (default), json, csv

scripts/google_patents_search.py

Low-level API wrapper. Use programmatically in Python.

from google_patents_search import GooglePatentsSearch, _api_get
searcher = GooglePatentsSearch()
results = searcher.search("keyword", limit=10, page=1)

Search Tips

| Goal | Query Pattern | |------|---------------| | Inventor lookup | "full name" (quotes improve precision) | | Company patents | "company name" | | Cross-reference | Space-separated: "inventor" "company" | | Patent details | --patent CN123456789A |

For very large results sets, increase --limit (auto-paginates in 10-result increments).

Report Template

Structure findings as:

# Patent Search Report: [Topic]

## Summary
- Total found: N
- By assignee: [breakdown]
- By year: [breakdown]

## Key Patents
[Table: patent_id, title, inventor, assignee, filing_date]

## Analysis
- Technology domains observed
- Key inventors / competitors
- Timeline trends

Rate Limits

Serper.dev free tier has request limits. If queries return empty, wait a few seconds and retry. Set SERPER_API_KEY environment variable before running.