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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12603861 B1

PDFFull Text
Date of Patent:
Apr. 14, 2026

Filed:

Apr. 25, 2024

Defense-in-depth method based on known device behavior

Applicant:

Morgan State University, Baltimore, MD (US);

Inventors:

Kevin Kornegay, Middle River, MD (US);

Khir Henderson, Baltimore, MD (US);

Assignee:

Morgan State University, Baltimore, MD (US);

Attorneys:

Whiteford, Taylor & Preston, LLP

Peter J. Davis

Primary Examiner:

Khoi V Le

Int. Cl.
CPC ...
H04L 9/40 (2022.01);
U.S. Cl.
CPC ...
H04L 63/0236 (2013.01); H04L 63/102 (2013.01); H04L 63/20 (2013.01); H04L 63/0876 (2013.01);
Abstract

Methods and systems identify a device on an IoT network. A network controller detects connection of the device on the IoT network and determines an organizational unique identifier (OUI) from a media access control (MAC) address of the device. The network controller retrieves a vendor ID from an OUI database. The network controller sends requests to the device via transmission control protocol (TCP) ports and receives a TCP port output. The network controller sends user datagram protocol (UDP) datagrams to the device via UDP ports and receives a UDP port output. The network controller determines a device fingerprint from the vendor ID, the TCP port output, and the UDP port output and matches the device fingerprint to parameters in an identity database to determine a first identity of the device. The network controller sends a DHCP deauthorization request to the device. After detecting reconnection of the device on the IoT network, the network controller collects DHCP option 55 parameters from the device and refines the first identity to determine a second identity based on the parameters.

Find Patent Forward Citations

Kornegay, Kevin. (2026). Defense-in-depth method based on known device behavior (U.S. Patent No. 12603861). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12603861

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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