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 University of Maryland School of Law, NASA Goddard Space Flight Center, and Douglas A. Lashmit, Attorney.

Top cities in Maryland

All practitioners in Maryland

Derek J. Langdon

Reg. 79605

Patent attorney

NASA Goddard Space Flight Center

Greenbelt, MD · 20771

301-286-7352

David W Larkin

Reg. 66927

Patent attorney

Annapolis, MD · 21401

303-842-0488

Douglas A Lashmit

Reg. 28871

Patent attorney

Douglas A. Lashmit, Attorney

Damascus, MD · 20872

301-461-7981

Simon C Lasker

Reg. 78503

Patent agent

Baltimore, MD · 21209

347-522-6133

Desiree L. Lassiter

Reg. 74518

Patent attorney

Federal Defender for the District of Maryland

Baltimore, MD · 21201

410-962-3962

Alan C. Lau

Reg. 67814

Patent agent

Silver Spring, MD · 20905

301-908-8996

Lawrence Edwin Laubscher· Jr

Reg. 28233

Patent attorney

Laubscher & Laubscher, P.C.

Annapolis, MD · 21403

410-280-6608

Eliane M Lazar-Wesley

Reg. 53928

Patent agent

Office of Extramural Affairs

Bethesda, MD · 20892-9547

301-451-4530

Edmond Paul Lazarus

Reg. 27348

Patent agent

US Army Corps Of Engineers

Baltimore, MD · 21203

410-962-4402

William T Leader

Reg. 73651

Patent agent

Silver Spring, MD · 20904

301-523-4094

Grace Marie Lear

Reg. 903022

Limited recognition

University of Maryland School of Law

Baltimore, MD · 21201

443-875-9945

Michael P Leary

Reg. 41144

Patent agent

Stanley Black and Decker, Inc.

Middle River, MD · 21220

410-630-9425

John A. LeBlanc

Reg. 64611

Patent attorney

Bethesda, MD · 20814

301-379-0698

Bryant C Lee

Reg. 68813

Patent attorney

Bethesda, MD · 20814

412-287-3074

Dustin Eugene Lee

Reg. 70398

Patent attorney

University of Maryland, Baltimore

Baltimore, MD · 21201

410-706-4372

Hae-In Lee

Reg. 62238

Patent agent

Baltimore, MD · 21202

703-231-8764

Hannah Hyenah Lee

Reg. 901956

Limited recognition

University of Maryland School of Law

Baltimore, MD · 21201

703-244-3496

Hee Sung Lee

Reg. 67629

Patent attorney

Defense Logistics Agency

Aberdeen Proving Ground, MD · 21005-1846

443-861-5267

Jun Y. Lee

Reg. 40262

Patent attorney

U.S. Government, Department of Defense

Ft. Meade, MD · 20755

301-688-6541

Laura L Lee

Reg. 48752

Patent attorney

Wellstat Management Corp

Gaitherburg, MD · 20878

240-631-2500

Michael S Lee

Reg. 41434

Patent attorney

Plumsea Law Group, LLC

Bethesda, MD · 20817

301-365-9040

Scott M. K. Lee

Reg. 59574

Patent attorney

Columbia, MD · 21044

202-997-6956

George F Lehnigk

Reg. 36359

Patent attorney

Edell, Shapiro & Finnan, LLC

Gaithersburg, MD · 20878

240-864-2449

Daniel M. Leo

Reg. 68506

Patent agent

ThermoChem Recovery International, Inc.

Baltimore, MD · 21227

585-469-1149

Ellen M Leonnig

Reg. 48159

Patent attorney

Sykesville, MD · 21784

410-707-1219

Avraham H. Lerner

Reg. 57673

Patent agent

Takoma Park, MD · 20912

301-270-7899

Renee M Leveque

Reg. 36193

Patent attorney

Leveque Intellectual Property Law, P.C.

Frederick, MD · 21701

301-668-3073

Paul J Levine

Reg. 46382

Patent attorney

Bethesda, MD · 20814

301-654-2546

Susan M. Levine

Reg. 57561

Patent attorney

U.S. Food and Drug Adminstration

Rockville, MD · 20855

301-827-5860

Jianming Li

Reg. 55381

Patent agent

U.S. Food and Drug Administration

Rockville, MD · 20850

301-827-2247

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.