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 Otsuka America Pharmaceutical, Inc., Law Office of Steven W. Weinreib, and Plumsea Law Group, LLC.

Top cities in Maryland

All practitioners in Maryland

Steven R Wegman

Reg. 31438

Patent attorney

Bethesda, MD · 20814

301-440-4262

Yun Wei

Reg. 70744

Patent attorney

Otsuka America Pharmaceutical, Inc.

Rockville, MD · 20850

202-663-8045

Steven W Weinrieb

Reg. 26520

Patent attorney

Law Office of Steven W. Weinreib

Potomac, MD · 20854

301-442-9638

Wendi L Weinstein

Reg. 34456

Patent attorney

Plumsea Law Group, LLC

Gaithersburg, MD · 20878

301-365-9040

Bruce E Weir

Reg. 48191

Patent attorney

Bruce E. Weir, Attorney at Law

Montgomery Village, MD · 20886

301-977-6009

Aaron Weisstuch

Reg. 41557

Patent agent

Silver Spring, MD · 20906

301-598-5630

Ulysses Weldon

Reg. 40459

Patent agent

Hyattsville, MD · 20783

301-270-5803

Matthew T Welker

Reg. 53756

Patent attorney

White-Welker & Welker, LLC

Clear Spring, MD · 21722-0199

410-.50-7.2837

John D Welsh

Reg. 35031

Patent agent

Bowie, MD · 20716

301-805-1933

John M Whealan

Reg. 66973

Patent attorney

The George Washington University Law School

Chevy Chase, MD · 20815

202-994-2195

John T Whelan

Reg. 32448

Patent attorney

Bayside Law

Prince Frederick, MD · 20678

410-535-6554

Fred S Whisenhunt· Jr

Reg. 24378

Patent attorney

Potomac, MD · 20854

301-424-8922

Stephen G Whiteside

Reg. 42224

Patent attorney

Life Technologies Corporation

Frederick, MD · 21704

240-379-4685

Laurie W Whitney

Reg. 48572

Patent agent

NIH

Rockville, MD · 20850

240-276-5505

David A Wiecking

Reg. 43382

Patent agent

D A W Net

Bethesda, MD · 20816

301-229-0337

James W. Wieder

Reg. 58703

Patent agent

Ellicott City, MD · 21042

410-461-9543

Klaus H Wiesmann

Reg. 30437

Patent attorney

Frederick, MD · 21704

240-315-7223

Richard C Wilder

Reg. 31202

Patent attorney

Baltimore, MD · 21211

202-740-8430

Benfeard L Williams· II

Reg. 77138

Patent agent

National Cancer Institute

Rockville, MD · 20850

240-276-6609

David Bruce Williams

Reg. 34280

Patent attorney

Bel Air, MD · 21014-6828

410-836-8415

Richard K Williams

Reg. 48193

Patent agent

Natl Institutes Of Health

Bethesda, MD · 20817

301-496-2644

Sam Lawrence Williams

Reg. 68071

Patent attorney

Baltimore, MD · 21210

202-596-7267

Scott A Williams

Reg. 39876

Patent attorney

AstraZeneca Pharmaceuticals LP

Gaithersburg, MD · 20878

301-398-5078

Geoffrey L R Williamson

Reg. 64924

Patent attorney

National Security Agency

Ft. Meade, MD · 20755

443-634-4355

Scott R Williamson

Reg. 52366

Patent attorney

Williamson Law Group

Ijamsville, MD · 21754

240-405-7687

George A Willinghan· III

Reg. 41377

Patent attorney

Patent Portfolio Builders

Fredricksburg, MD · 22404

540-361-1863 X 134

Jacqueline B Wilson

Reg. 57966

Patent agent

Oxon Hill, MD · 20745

301-839-5885

Pamela A Wilson

Reg. 56131

Patent agent

Wilson Consulting

Silver Spring, MD · 20905

302-879-2942

Jay B Winchester

Reg. 51365

Patent attorney

US Army Medical Research and Materiel Command

Frederick, MD · 21702

301-619-7798

Frederick K Wine

Reg. 31203

Patent attorney

Quantum Company

Bethesda, MD · 20814

301-237-8501

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.