PatentSearch

Search two free official patent databases (Espacenet + USPTO) in one app.

Search over 200 million patents from two free official databases - Espacenet (European Patent Office) and USPTO ODP (US Patent Office) - in a single interface. Results show patent number, title, date and assignee. Click any result for details and the original patent page. Free API keys with in-app registration guide; no expensive commercial patent tools needed.

Features

• Espacenet OPS + USPTO ODP dual search
• Patent number / title / date / assignee
• Patent detail view + original page links
• Export results to CSV
• In-app API key setup with registration guide
• Bilingual UI (English / 中文)

Quick Start

1. Buy on Gumroad and download the zip
2. Unzip and double-click PatentSearch to start
3. Open Settings, register free keys (Espacenet / USPTO), paste and test
4. Search patents and export CSV

Best for: Engineers, patent searchers, R&D teams, startups