Free IP due diligence tool
Before you license, acquire or invest around a company's technology, you need to know what IP it actually holds — and whether it truly owns it. OpenDD's IP due diligence identifies the owner, then verifies the patents and trademarks it holds, their chain of title, any encumbrances, disputes and renewal status — for free.
Run IP due diligence free →What it checks
The module resolves the rightsholder and pulls its portfolio from the USPTO (US patents and trademarks) and the EPO (worldwide patents), then surfaces assignment history so you can confirm the chain of title from inventor to current owner. It flags security interests and other encumbrances, live disputes, and whether registrations are current or lapsing.
Why chain of title matters
A patent or trademark is only worth what its ownership record can prove. Broken assignments, unrecorded transfers or liens can quietly undermine a deal. OpenDD reads the official assignment records so you see the transfers yourself rather than taking a data room's word for it.
From search to report
Run a name, review the portfolio across the Patent (US), Patent (Worldwide) and Trademark tabs, filter by jurisdiction, then generate a Word or PDF report — or hand the findings to a lawyer for an opinion. For a manual walkthrough, see the IP due diligence checklist.
Related
Frequently asked questions
How do I check who owns a patent for free?
Enter the company or owner name in OpenDD's IP due diligence module. It pulls the portfolio from the USPTO and EPO and shows assignment history so you can confirm the current owner and chain of title.
Does it cover international patents?
Yes. Worldwide patents are searched via the EPO's Open Patent Services (PCT/WO, EP, and national records), alongside US patents and trademarks from the USPTO.
Can I export the results?
Yes — generate a downloadable Word or PDF report, and request a lawyer's opinion on the findings from inside the tool.