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 Thoughts to Paper, Defense Health Agency, and Chapman Patent Law & Research.

Top cities in Maryland

All practitioners in Maryland

Anuraj Chakraborty

Reg. 79592

Patent agent

Thoughts to Paper

Germantown, MD · 20874

800-919-2493

Yean-Hsi Chang

Reg. 61463

Patent agent

North Potomac, MD · 20878

301-762-4817

Marlana K Chapin

Reg. 35843

Patent attorney

Defense Health Agency

Fort Detrick, MD · 21702

301-529-7634

Ginger Titania Chapman

Reg. 54796

Patent attorney

Chapman Patent Law & Research

Greenbelt, MD · 20770

301-785-8385

Melissa M Chapman

Reg. 80397

Patent attorney

Emergent BioSolutions

Gaithersburg, MD · 20879

860-462-2484

Anil Chaudhry

Reg. 62792

Patent attorney

potomac, MD · 20854

301-251-2159

Sushma Chauhan

Reg. 76074

Patent agent

Barinthus Biotherapeutics North America, Inc.

Germantown, MD · 20874

443-917-0967

Zhanele Delyla Chavez

Reg. 903020

Limited recognition

University of Maryland School of Law

Baltimore, MD · 21201

559-395-3138

Alice Lee Chen

Reg. 26852

Patent agent

Chenpatents

Silver Spring, MD · 20906

240-292-0565

Charlton J Chen

Reg. 75265

Patent agent

Gambrills, MD · 21054

212-920-0816

David Chen

Reg. 77875

Patent attorney

Rockville, MD · 20852

412-525-0087

Wei Chuan Chen

Reg. 62213

Patent agent

University of Maryland

College Park, MD · 20742

301-405-3790

Wenpeng Chen

Reg. 75351

Patent agent

Bethesda, MD · 20817

301-320-2183

Ying Yu Chen

Reg. 82849

Patent attorney

Edell, Shapiro & Finnan, LLC

Gaithersburg, MD · 20878

240-864-2416

Kay E Cheney

Reg. 39577

Patent agent

Columbia, MD · 21046-2800

301-604-0217

Glen C Cheng

Reg. 70341

Patent attorney

US FDA

Silver Spring, MD · 20903

917-853-3705

Steven Y Cheng

Reg. 52733

Patent agent

Cellogenetics INC

Gaithersburg, MD · 20898

240-888-9539

Michael B Chernoff

Reg. 42408

Patent attorney

Potomac, MD · 20854

240-479-9244

Nadine C. Chien

Reg. 40951

Patent attorney

Francis Carey School of Law

Baltimore, MD · 21201

410-706-7214

Gary Chin

Reg. 61963

Patent agent

Silver Spring, MD · 20905

301-384-8819

Ling-Siu W. Choi

Reg. 84019

Patent agent

Bethesda, MD · 20814

646-750-5048

Peter S Choi

Reg. 54033

Patent agent

Rockville, MD · 20860

202-494-7019

Jae Young Chon

Reg. L1285

Limited recognition

Sinorica LLC dba Thoughts to Paper

Germantown, MD · 20874

612-284-8888

Albert T. Chou

Reg. 78861

Patent agent

Sinorica International Patent and Trademark

Germantown, MD · 20874

301-551-5128

Shuo C Chou

Reg. 70031

Patent attorney

Sinorica LLC

Germantown, MD · 20874

240-523-4321

Ming Chow

Reg. 58531

Patent agent

Sinorica, LLC

Germantown, MD · 20874

301-551-5128

Peter I Chu

Reg. 72472

Patent attorney

College Park, MD · 20740

571-422-3432

Albert M Churilla

Reg. 56799

Patent attorney

U.S. Navy

Silver Spring, MD · 20910

301-319-7503

Anthony V Ciarlante

Reg. 32639

Patent agent

Temple Hills, MD · 20748

301-423-4148

Camille Ciesliga

Reg. 65525

Patent attorney

Wellstat Management Company, LLC

Gaithersburg, MD · 20878

240-631-2500

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.