Enter a U.S. patent number or application number to pull its current status, key dates, and recorded assignment / chain of title directly from the USPTO Open Data Portal.
This is an informational screening tool, not legal advice and not a title opinion. Recorded assignments can be incomplete or unrecorded, and status lines do not interpret rights. For anything that matters — diligence, ownership, enforcement — talk to an attorney.
We query the USPTO Open Data Portal live and never store your input.
Application numbers are 8 digits. The Open Data Portal covers applications from roughly 2001 onward. Data comes from the public USPTO Open Data Portal.
Search by owner or company name to list the U.S. patents and applications on file under that name — a quick screening proxy for a portfolio, matched on the applicant of record. Informational only; post-grant assignments may have moved ownership elsewhere, so this is not a title search. For anything that matters, talk to an attorney.
Matched on the applicant of record in the USPTO Open Data Portal (roughly 2001 onward). Not a title search.
Who owns a patent governs who can license, enforce, or sell it. Recorded assignments at the USPTO are the public trail, but they are not conclusive: assignments can be unrecorded, recorded against the wrong entity, or silent on security interests and mergers. A clean-looking record is a starting point for diligence, not the end of it. Before you rely on ownership — in an acquisition, a license, or litigation — have counsel run a proper due diligence review.