Maryland

Patent attorneys in Maryland

Maryland hosts 1,200 active patent practitioners registered with the USPTO Office of Enrollment and Discipline. Patent attorneys and patent agents can both prepare and file patent applications, but only patent attorneys can also offer legal advice on prosecution strategy, freedom-to-operate analyses, and infringement opinions in Maryland. Practitioners are concentrated across 20 cities, with the largest clusters in the metros listed below. Notable firms with multiple registered practitioners in the state include 24IP Law Group USA, PLLC, National Institute of Standards and Technology, and Lockheed Martin Corporation.

Top cities in Maryland

All practitioners in Maryland

Timothy R DeWitt

Reg. 35857

Patent attorney

24IP Law Group USA, PLLC

Annapolis, MD · 21403

410-212-2539

John J Dials· Jr

Reg. 39656

Patent attorney

Rockville, MD · 20850

240-888-3799

Chuantian Ding

Reg. 56670

Patent agent

Rockville, MD · 20851

301-424-5687

Jeffrey A DiVietro

Reg. 68212

Patent agent

National Institute of Standards and Technology

Gaithersburg, MD · 20899

301-975-8779

Jeffrey A Divney

Reg. 39659

Patent attorney

Lockheed Martin Corporation

Bethesda, MD · 20817

301-897-6259

Gregory Dolin

Reg. 58820

Patent attorney

University of Baltimore School of Law

Baltimore, MD · 21201

410-837-4610

Ilker Donmez

Reg. 68425

Patent attorney

UMB

Baltimore, MD · 21201

773-599-0453

David R Dorrin

Reg. 50683

Patent agent

US Dept of Defense

Fort Meade, MD · 20755

301-688-0861

Christopher Kent Dorsey

Reg. 60263

Patent attorney

Quidient, LLC

Columbia, MD · 21046

703-537-9127

Dinnatia Doster-Greene

Reg. 45268

Patent attorney

Doster Greene, LLC

Chevy Chase, MD · 20815

301-706-5975

Caeden C. Drayton

Reg. 70193

Patent attorney

Stanley Black & Decker, Inc.

Towson, MD · 21286

410-716-2419

Eilene A. Duberow

Reg. 75409

Patent attorney

Novavax

Gaithersburg, MD · 20878

184-466-82829

Jean Karen Dudek

Reg. 30938

Patent attorney

Bethesda, MD · 20814

301-215-6967

Keary L Dunn

Reg. 51637

Patent attorney

Otsuka Maryland Research Inst

Rockville, MD · 20850

240-683-3185

Jennifer Ann Dunner

Reg. 33685

Patent attorney

Plumsea Law Group

Bethesda, MD · 20817

847-607-0164

James M. Eaton

Reg. 76118

Patent attorney

Gaithersburg, MD · 20878

301-398-0000

Graham P Eatwell

Reg. 50259

Patent agent

Annapolis, MD · 21401

410-295-5040

Nathan Edelberg

Reg. 18963

Patent attorney

Silver Spring, MD · 20904

301-593-2040

Ira C Edell

Reg. 24119

Patent attorney

Edell, Shapiro & Finnan

Gaithersburg, MD · 20878

301-424-3640

William Brian Edge

Reg. 51642

Patent attorney

Silver Spring, MD · 20902

202-262-9131

James Warren Edmondson

Reg. 33871

Patent attorney

Burr & Brown, PLLC

Bethesda, MD · 20817

315-233-8300

Christopher O Edwards

Reg. 36127

Patent attorney

Baltimore, MD · 21212

443-844-1659

Danielle M Edwards

Reg. 51645

Patent attorney

Johns Hopkins, Berman Institute of Bioethics

Baltimore, MD · 21205

202-253-9695

Oliver L Edwards

Reg. 64711

Patent attorney

Law Office of Oliver Edwards LLC

Silver Spring, MD · 20901

301-841-8050

Janet C Effler

Reg. 66387

Patent agent

Gaithersburg, MD · 20878

240-864-2458

Aya Eguchi

Reg. 67086

Patent agent

Bethesda, MD · 20817

301-229-6132

Robert J Eichelburg

Reg. 23057

Patent attorney

Law Offices Of Robert J Eichelburg

Annapolis, MD · 21403

410-295-1508

George Kenneth Eichelman

Reg. 78113

Patent attorney

Catonsville, MD · 21228

443-604-7465

Lawrence D Eisen

Reg. 41009

Patent attorney

Edell, Shapiro & Finnan, LLC

Gaithersburg, MD · 20878

301-424-3640

Ulf D Ekernas

Reg. 52856

Patent agent

Silver Spring, MD · 20910

202-230-3825

Common questions

Do I need a patent attorney based in Maryland?

No. Every USPTO-registered patent practitioner is licensed to file applications on behalf of inventors in any state, regardless of where the practitioner's office is. Choosing a Maryland-based practitioner can simplify in-person inventor signings, local meetings, and same-time-zone calls, but it is not a legal requirement.

How many patent attorneys are licensed in Maryland?

1,200 active USPTO-registered patent practitioners list a Maryland office address on the OEDCI roster. This includes both patent attorneys (who can also offer legal advice) and patent agents (who can prepare and file patents but not offer broader legal advice).

What is the difference between a patent attorney and a patent agent?

Both pass the USPTO Patent Bar and can prepare, file, and prosecute patent applications. Only patent attorneys also hold a state bar license, meaning they can additionally offer legal advice on infringement, licensing, and litigation strategy. Patent agents tend to charge less per hour and are common at large in-house IP departments.