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 Johns Hopkins Technology Transfer, Darrell E Hollis, and Plumsea Law Group, LLC.

Top cities in Maryland

All practitioners in Maryland

Ann S Hobbs

Reg. 36830

Patent attorney

Silver Spring, MD · 20901

301-585-3690

Karin Hoelzer

Reg. 72508

Patent agent

Bethesda, MD · 20816

607-339-6561

Veronica P Hoke

Reg. 51317

Patent agent

Temple Hills, MD · 20748

301-894-7906

Nakisha D. Holder

Reg. 66321

Patent agent

Johns Hopkins Technology Transfer

Baltimore, MD · 21201

410-516-8300

Darrell Edwin Hollis

Reg. 26738

Patent attorney

Darrell E Hollis

Montgomery Village, MD · 20886

240-688-8469

Eugene Cleveland Holloway· III

Reg. 30849

Patent attorney

Annapolis, MD · 21409

908-399-3319

Patricia Eunmee Hong

Reg. 34373

Patent attorney

Plumsea Law Group, LLC

Gaithersburg, MD · 20878

301-365-9040

Wonpyo Hong

Reg. 70656

Patent agent

Clarksville, MD · 21029-1468

410-440-4065

Joseph Bruce Hoofnagle· Jr

Reg. 20973

Patent attorney

Woodbine, MD · 21765-6370

410-442-2417

Alexander John Hoogland

Reg. 901268

Limited recognition

University of Maryland School of Law

Baltimore, MD · 21201

410-706-2569

Julie A Hopkins

Reg. 48969

Patent attorney

Hopkins IP, LLC

Baltimore, MD · 21202

410-696-3306

Douglas A. Hosack

Reg. 73115

Patent attorney

Abacia Patent Law and Analytics

North Potomac, MD · 20878

240-460-8000

Brett E Howard

Reg. 69673

Patent agent

Silver Spring, MD · 20910

602-770-4036

Cindy Wan-Hsin Hsu

Reg. 60181

Patent attorney

Rockville, MD · 20849

240-685-1070

Su Cheng Dana Hsu

Reg. 41854

Patent attorney

National Institute of Allergy and Infectious Diseases

Bethesda, MD · 20892-6606

301-451-3521

Michael P. Hsur

Reg. 65894

Patent attorney

Rockville, MD · 20850

301-208-1718

Lian Huang

Reg. 65612

Patent attorney

Potomac, MD · 20854

240-620-1260

Yingling Huang

Reg. 70101

Patent agent

U.S. Federal Agency

Rockville, MD · 20850

240-276-6017

Matthew D. Huber

Reg. 84320

Patent agent

Annapolis, MD · 21409

443-602-0810

Kelly Rose Hughes

Reg. 76593

Patent attorney

Unified Patents, LLC

Chevy Chase, MD · 20815

720-352-1807

Rahat Husain

Reg. 70658

Patent attorney

Pharmaceutics International, Inc.

Hunt Valley, MD · 21031

410-584-0001

Linda Sigillito Hutchison

Reg. 59520

Patent attorney

Hutchison Law, LLC

Columbia, MD · 21044

410-978-7287

Victor K. Hwang

Reg. 72070

Patent agent

Rockville, MD · 20853

301-509-6191

Esther In

Reg. 84389

Patent agent

Germantown, MD · 20874

240-474-3426

Margaret A Irvin

Reg. 46032

Patent agent

Office of Techology Development,NIAID,NIH

Bethesda, MD · 20817

301-594-1697

Thomas M Isaacson

Reg. 44166

Patent attorney

Polsinelli

Dunkirk, MD · 20754

443-964-2209

Kunihiko P Ishikawa

Reg. 61696

Patent attorney

Advanced BioScience Laboratories, Inc.

Rockville, MD · 20850

301--81-6-5445

Jyoti Chidambaram Iyer

Reg. 54613

Patent attorney

Potomac, MD · 20854

240-403-7134

Brandon W. Jackson

Reg. 72906

Patent attorney

Department of Defense

Fort Meade, MD · 20755

443-618-8578

Matthew Max Jacob

Reg. 25154

Patent attorney

Jacob and Associates, LLC

Annapolis, MD · 21403

410-267-0242

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.