Assignee

USPTO assignment database records you can actually read

The USPTO assignment database is the public register of documents that transfer or encumber rights in US patents and applications, such as assignments, mergers, name changes and security interests. Assignee reads that register for any patent number and shows the records as one ordered chain of title with the current owner of record at the end.

Search the USPTO assignment database by patent number

Trace the owner of any US patent

Enter a granted US patent number like 9,876,543 or its publication number like US9876543B2.

Report

Pick a date to see the changes recorded since then.

Include security interests and releases

No number at hand? Try a sample patent

Public USPTO records. No card required. Your searches stay yours.

Ownership report

US 9,567,890 B2
  1. Fetching USPTO assignment records
  2. Reading conveyances
  3. Linking assignors to assignees
  4. Checking for gaps and open security interests

Current owner of record

Owner of record

Phinia Jersey Holdings LLC

Recorded on

May 31, 2024

Reel and frame

067592 / 0662

Conveyance

Assignment of assignors interest

Chain of title

Title risk flags

No issues found in this check

Create an account to see every assignment in the chain, all title risk flags and the full PDF report.

This report shows what is recorded at the USPTO. Assignments that were never recorded do not appear in any public register. It is not legal advice.

What the USPTO assignment database records

Anyone who acquires an interest in a patent can record the document at the USPTO. Each recorded document receives a reel and frame number and an entry that lists the conveyance type, the assignors, the assignees, the execution date, the recording date and the properties it covers.

  • Assignments of the entire right, title and interest
  • Assignments of an undivided part interest
  • Security agreements and releases of security interest
  • Mergers and changes of name
  • Licenses and other documents that parties choose to record
  • Corrections of earlier recorded documents

Why recording matters

Under 35 U.S.C. 261 an assignment of a patent must be in writing. An assignment that is not recorded within three months of its date, or before a later purchase, is void against a later buyer or mortgagee who paid value without notice of it. That is why buyers, lenders and courts look at the record first, and why a clean record is part of the value of a patent.

Why the raw records are hard to use

  • One document can cover hundreds of patents, and one patent can appear in dozens of documents.
  • Names change from one document to the next, so the same owner looks like several.
  • Documents recorded against the application and against the patent are listed separately.
  • Releases of security interests are recorded years after the lien, if at all.
  • Nothing in the register tells you whether the chain is complete.

How Assignee reads the USPTO assignment database for you

Assignee fetches every record for the patent and its application, sorts them, links each assignor to the previous assignee and normalizes company names. The report shows the owner of record, each step with its reel and frame, every security interest with its release status and title risk flags where the chain breaks. Learn the full method on patent assignment database. Teams that need the same record inside their own software use the USPTO assignment API, and anyone comparing paid tools with the official search can start with our USPTO assignment search alternative guide.

The register on its own and the register through Assignee

Task Register on its own With Assignee
Find the current owner Read every record and decide which is last Owner of record shown first
Follow the chain Open each document and match names by hand Linked timeline from inventors to owner
Check liens Search for releases separately Release status next to each security interest
Spot gaps Compare names yourself Title risk flags with the document behind each
Watch for changes Search again later Email alert when a new document is recorded
Share the result Copy records into a memo PDF and CSV export

What the database does not prove

The USPTO records documents without checking whether they are valid. A recorded assignment can be wrong, and an assignment that was never recorded is absent from every search. Assignee shows exactly what the record holds and tells you when the record is silent, so your review can focus where it matters.

Questions about the USPTO assignment database

Is the USPTO assignment database free?

Yes. The USPTO publishes assignment records for public search at no charge. Assignee is a paid service that reads those records and turns them into a chain of title, risk flags, alerts and exports.

Does the database show who owns a patent today?

It shows every recorded document. The owner today is the last assignee in a complete chain, which you have to work out from the records. Assignee does that for you and shows the owner of record first.

How quickly do new assignments appear?

A document appears after the USPTO processes the recording request. Assignee checks the register for patents you monitor and emails you when a new document shows up.

Search by company instead with the patent assignee search, or confirm a single owner with a patent ownership search.

Trace ownership