⚖️ USPTO Patent Assignments Scraper

🚀 Export patent ownership records from the USPTO Assignment Center in seconds. Search by assignee, assignor, patent number, application number, publication number, PCT number, or reel/frame reference and download the full chain-of-title history as CSV, Excel, JSON, or XML.

The USPTO Patent Assignments Scraper pulls ownership transfer records directly from the USPTO Assignment Center (assignmentcenter.uspto.gov), the official replacement for the retired Assignment Search portal. Every assignment record includes assignor names, assignee names, conveyance type, patent and application numbers, invention titles, filing and issue dates, reel/frame reference, correspondent details, and the execution and recordation dates - everything needed to reconstruct the chain of title for any U.S. patent.

The dataset covers more than 40 years of assignment activity - millions of records from individual inventors transferring rights to corporations, through mergers and acquisitions, security agreements, government licenses, and more. All data is scraped in real time directly from the official USPTO source, never from a cached mirror.

Target Audience / Use Cases

Who	Why
IP attorneys & paralegals	Verify chain of title, draft assignment agreements, due diligence
Competitive intelligence teams	Track technology acquisitions and patent portfolio movements
Investors & M&A analysts	Identify patent-rich acquisition targets, map IP ownership changes
Academic researchers	Study patent market dynamics, technology transfer trends
Journalists & journalists	Investigate IP deals and corporate patent strategies
Patent licensing professionals	Find current patent owners for licensing negotiations

📋 What the USPTO Patent Assignments Scraper does

• Searches the USPTO Assignment Center by assignee name, assignor name, patent number, application number, publication number, PCT number, or reel/frame number
• Paginates automatically through all result pages until maxItems is reached
• Extracts all 19 fields per assignment record including full assignee/assignor arrays, all associated patent numbers, invention titles, filing dates, and correspondent details
• Exports to CSV, Excel, JSON, or XML via the Apify dataset
• Supports partial (contains) and exact match modes for name-based searches
• Filters by date range (recorded date from/to) to narrow results

💡 Why it matters: Patent ownership determines who can license, enforce, or sell a technology. A single acquisition can transfer thousands of patents at once. Having a programmatic way to query this data - without navigating the web UI manually - saves hours of research per case.

📊 Data fields

Each record includes: applicationNumbers, assignees, assignors, attorneyDocketNumber, conveyanceText, correspondentAddress, correspondentName, executionDate, filingDates, inventionTitles, inventors, issueDates, noOfProperties, patentNumbers, publicationNumbers, recordedDate, reelFrame, scrapedAt, sourceUrl. These field names come straight from the actor's dataset schema, so what you see here is what lands in your dataset.

⚠️ Good to Know: The reelFrame search expects the format REEL/FRAME (e.g. 028725/607). Date filters use MM/DD/YYYY format (e.g. 01/01/2020). Free users are limited to 10 records per run regardless of maxItems.

🚀 How to use

1. Create a free account at Apify (includes $5 in free credit)
2. Open the USPTO Patent Assignments Scraper actor page and click Try for free
3. Choose your search field (e.g. Assignee Name) and enter your search query (e.g. Tesla)
4. Optionally set maxItems and a date range
5. Click Start and wait for the run to finish (typically seconds to minutes)
6. Download your dataset as CSV, Excel, JSON, or XML

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💡 Pro Tip: Browse the complete ParseForge collection for more government data, business intelligence, and IP research scrapers.

Disclaimer: This tool accesses publicly available data from the USPTO Assignment Center in compliance with the USPTO's terms of use. It is intended for legitimate research, legal, and business purposes. ParseForge is not affiliated with the United States Patent and Trademark Office. Users are responsible for ensuring their use of the data complies with applicable laws and regulations.

🆘 Need Help?

If you hit a bug, have questions about setup, or need a scraper we haven't built yet, open our contact form or write to parseforge@protonmail.com. We also take on paid custom data projects.

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