About This Site
Why 3PPS.info exists and who built it.
The Problem This Site Solves
The Third-Party Preissuance Submission (3PPS) is one of the most underused tools in US patent law. Under 35 U.S.C. § 122(e), any member of the public can place prior art directly in front of a USPTO examiner — before a patent issues. It's often free. It's anonymous. And most people who could use it have never heard of it.
The official USPTO documentation is dense and written for practitioners. Law firm explainers exist but are usually incomplete or gated behind a contact form. This site is the plain-English guide that should have existed already.
Who Built It
3PPS.info was built by Kieran O'Leary. If you want to get in touch or learn more about what I work on, you can find me at kieranjoleary.com.
A Note on Legal Advice
This site is an educational resource and is not affiliated with the USPTO. Nothing here constitutes legal advice, and use of this site does not create an attorney-client relationship. Patent law is fact-specific — consult a registered patent practitioner before making decisions about prior art submission or withholding.