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 US FDA, UM Ventures, and Charles E. Yocum, Attorney at Law.

Top cities in Maryland

All practitioners in Maryland

John Ye

Reg. 71602

Patent attorney

Silver Spring, MD · 20906

202-210-4546

Raymond P Yeager

Reg. 80778

Patent attorney

US FDA

College Park, MD · 20740

301-796-6742

Stephen F K Yee

Reg. 27173

Patent attorney

Potomac, MD · 20854

301-279-9012

Roy Y. Yi

Reg. 83473

Patent attorney

UM Ventures

College Park, MD · 20742

301-405-2564

Charles E Yocum

Reg. 30121

Patent attorney

Charles E. Yocum, Attorney at Law

Ellicott City, MD · 21043

410-935-1710

Ediz Osman Yonter

Reg. 54882

Patent attorney

Bethesda, MD · 20892

312-550-0262

Michael William York

Reg. 24749

Patent attorney

Gaithersburg, MD · 20882

301-253-4217

Fei You

Reg. 69331

Patent agent

Rockville, MD · 20850

765-409-6405

Bryant Lamont Young

Reg. 49073

Patent attorney

Hopkins & Young, LLC

Towson, MD · 21204

410-624-2707

Michael O Young· Jr.

Reg. 69823

Patent agent

Covahey, Boozer, Devan & Dore, P.A.

Hunt Valley, MD · 21031

443-541-8600

Leeger Yu

Reg. 70331

Patent agent

Potomac, MD · 20854

301-661-8802

Lei Yu

Reg. 65015

Patent agent

iChina LLC

Potomac, MD · 20854

717-991-5764

Ningpu Yu

Reg. 70932

Patent agent

Gaithersburg, MD · 20878

240-780-6826

Jonathon J Yun

Reg. 53823

Patent attorney

Stanley Black & Decker

Towson, MD · 21286

410-630-9457

Daniel H. Zang

Reg. 63180

Patent agent

Rockville, MD · 20850

202-630-1316

Subhash A Zaveri

Reg. 56035

Patent agent

LTC Corporation

Silver Spring, MD · 20905

301-879-3624

Linda B Zeit

Reg. 57084

Patent attorney

Office of the Public Defender

Baltimore, MD · 21202

410-333-4900 EXT. 242

Chelsea X Zhang

Reg. 80643

Patent attorney

20411 Shadow Oak Ct.

Gaithersburg, MD · 20886

240-907-8384

Ming Zhang

Reg. 82603

Patent agent

Glenelg, MD · 21737

585-200-9909

Youhong Zhang

Reg. 62509

Patent agent

Gaithersburg, MD · 20886

240--35-4-2060

Yonghong Zhao

Reg. 81093

Patent agent

Potomac, MD · 20854

301-523-2718

Alevtina G Zhelonkina

Reg. 65746

Patent agent

The Johns Hopkins University

Baltimore, MD · 21201

410-516-7789

Yan Zheng

Reg. 72188

Patent agent

Silver Spring, MD · 20854

214-412-1289

Jeff X Zhou

Reg. 77400

Patent agent

Potomac, MD · 20854

202-515-0800

Shubo Zhou

Reg. 54926

Patent agent

Plant Patent Services

Gaithersburg, MD · 20882

301-956-5069

Qi Zhuo

Reg. 63749

Patent agent

Johns Hopkins University

Baltimore, MD · 21205

667-306-8205

Shannon Leigh Ziegler

Reg. 903025

Limited recognition

University of Maryland School of Law

Baltimore, MD · 21201

443-789-0316

Suzanne E Ziska

Reg. 43371

Patent attorney

Edgewater, MD · 21037

202-669-2256

Nati N Zongo

Reg. 75329

Patent attorney

Germantown, MD · 20874

301-250-0131

Sige Zou

Reg. 73177

Patent agent

Division of Comparative Medicine/ORIP

Bethesda, MD · 20892

301-435-0749

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.