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 National Institutes of Health, Thomas E. McDonnell, Esq., and DSM Nutrition Products.

Top cities in Maryland

All practitioners in Maryland

Patrick P. McCue

Reg. 65898

Patent agent

National Institutes of Health

Rockville, MD · 20852

301-761-7391

Timothy J. H. McDonald

Reg. 81830

Patent agent

Owings Mills, MD · 21117

443-821-5719

Thomas E McDonnell

Reg. 26950

Patent attorney

Thomas E. McDonnell, Esq.

Ft. Washington, MD · 20744-6014

301-203-9596

Gary McFaline

Reg. 68432

Patent attorney

Baltimore, MD · 21224

215-888-0781

Shannon E McGarrah

Reg. 55442

Patent attorney

DSM Nutrition Products

Columbia, MD · 21045

443-542-2395

Charlotte M McGuinness

Reg. 52013

Patent attorney

Bethesda, MD · 20817

301-442-4459

Tima Michele McGuthry-Banks

Reg. 53944

Patent agent

Accokeek, MD · 20607

301-292-9796

John S McInnes

Reg. 54307

Patent agent

Silver Spring, MD · 20901

301-593-3951

Robert McIsaac

Reg. 46918

Patent attorney

Algenol Biofuels, Inc.

Baltimore, MD · 21211

410-400-8670

J Andrew McKinney· Jr

Reg. 34672

Patent attorney

J. A. McKinney & Associates, LLC

Millersville, MD · 21108

410-518-6040

Kimberly N. McLean

Reg. 62378

Patent attorney

McLean Law LLC

Baltimore, MD · 21202

443-220-7276

Robert T. McMullen

Reg. 78239

Patent attorney

Pikesville, MD · 21208

301-536-0401

David L McMurray· Jr

Reg. 61936

Patent attorney

Baltimore, MD · 21209

423--74-1-3120

Joseph E McNamara

Reg. 60521

Patent attorney

Government Employees Insurance Company (GEICO)

Chevy Chase, MD · 20815

800-207-7847

Mark D McNemar

Reg. 64904

Patent attorney

U.S. Dept of Agriculture, Agricultural Research Service

Beltsville, MD · 20705

301-504-1172

John J McVeigh

Reg. 30197

Patent attorney

J. J. McVeigh , Attorney at Law

Butler, MD · 21023-0128

443-507-5611

Yun Mei

Reg. 72698

Patent agent

Rockville, MD · 20855

301-926-4909

James M Meister

Reg. 45385

Patent agent

Bethesda, MD · 20814

301-530-6552

David L Mellman

Reg. 68059

Patent attorney

David Lorenz Mellman

Gaithersburg, MD · 20878

720-391-8767

Kwame N. Mensah

Reg. 60768

Patent attorney

Medimmune LLC

Gaithersburg, MD · 20878

301-398-0972

Edward W Merz· II

Reg. 44445

Patent agent

Gambrills, MD · 21054

410-672-6643

William H Meserole· Jr

Reg. 20833

Patent attorney

Stevensville, MD · 21666

410-643-2265

Christopher Allen Meshell

Reg. 902326

Limited recognition

University of Maryland School of Law

Baltimore, MD · 21201

713-855-3963

Andrew H Metz

Reg. 58519

Patent attorney

Deale, MD · 20751

410-867-3266

Felicia A. Metz

Reg. 57401

Patent attorney

University of Maryland

College Park, MD · 20742

301-405-2797

Greta A Meyer

Reg. 53321

Patent attorney

Silver Spring, MD · 20901

301-593-8397

Marita K Mike

Reg. 46040

Patent attorney

Baltimore, MD · 21210

410-889-1163

James E. Miller

Reg. 73671

Patent attorney

Columbia, MD · 21046

301-693-4356

Stanley D Miller

Reg. 45328

Patent agent

Potomac, MD · 20854

301-299-4008

Viva L. Miller

Reg. 80103

Patent attorney

NASA

Greenbelt, MD · 20771

301-286-2000

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.