Washington, District of Columbia

Patent attorneys in Washington

Washington, District of Columbia is home to 2,587 USPTO-registered patent practitioners. Working with a local practitioner can streamline in-person meetings for invention disclosures, signing inventor declarations, and reviewing prior-art search results — but every USPTO practitioner is licensed to practice nationally, so a non-local choice is also valid. Local firms with the most USPTO-registered practitioners include Unified Patents, Inc., Arent Fox LLP, and Marquardt Law.

Jessica L. A. Marks

Reg. 67451

Patent attorney

Unified Patents, Inc.

Washington, DC · 20009

571-488-3864

Charles Michael Marmelstein

Reg. 25895

Patent attorney

Arent Fox LLP

Washington, DC · 20036-5344

202-857-6000

John L Marquardt· Jr

Reg. 55429

Patent attorney

Marquardt Law

Washington, DC · 20007

202-880-1444

Juan Carlos Angeles Marquez

Reg. 34072

Patent attorney

Marquez Intellectual Property Law Office, PLLC

Washington, DC · 20006

202-349-1690

David R Marsh

Reg. 41408

Patent attorney

Arnold and Porter Kaye Scholer LLP

Washington, DC · 20001-3743

202-942-5068

Virgil Homer Marsh

Reg. 23083

Patent attorney

Fisher, Christen & Sabol

Washington, DC · 20036

202-659-2000

Brian J. Marstall

Reg. 73023

Patent attorney

Michael Best & Friedrich LLP

Washington, DC · 20004

202-747-9563

James T Martin

Reg. 22937

Patent attorney

J.T. Martin

Washington, DC · 20007

202-296-3650

Keegan T. Martin

Reg. 83871

Patent agent

Washington, DC · 20002

908-967-2323

Thomas C. Martin

Reg. 57677

Patent attorney

Baker Botts LLP

Washington, DC · 20004-2400

202-639-7752

William D Martin· Jr

Reg. 33335

Patent agent

Washington, DC · 20019

202-575-8172

Shoshana G Marvin

Reg. 70077

Patent attorney

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Washington, DC · 20005

202-772-8850

Kamyar M Maserrat

Reg. 75022

Patent attorney

Dentons US LLP

Washington, DC · 20006-1102

202-496-7376

Mark F. Mashack

Reg. 73782

Patent attorney

Blank Rome

Washington, DC · 20006

202-420-2200

Geoffrey C Mason

Reg. 42847

Patent attorney

Shook Hardy and Bacon

Washington, DC · 20005-2004

202-783-8400

Joanna K Mason

Reg. 56408

Patent agent

Brake Hughes Bellermann.LLP

Washington, DC · 20006

202-470-6460

Richard James Mason

Reg. 67060

Patent attorney

Brake Hughes Bellermann LLP

Washington, DC · 20006

202-753-6918

Zachary D. Mason

Reg. 78679

Patent attorney

Bookoff McAndrews

Washington, DC · 20006

771-208-3462

Mary Katherine O. Mastaler

Reg. 84413

Patent agent

Michael Best

Washington, DC · 20024

202-747-9560

James T Masters

Reg. 77225

Patent attorney

Finnegan, Henderson, Farabow, Garrett & Dunner LLP

Washington, DC · 20001-4413

202-408-4127

Robert Martin Masters

Reg. 35603

Patent attorney

Sheppard Mullin Richter & Hampton LLP

Washington, DC · 20006

202-747-1935

David G. Mata

Reg. 72300

Patent attorney

Greenberg Traurig, LLP

Washington, DC · 20037

202-573-8201

Joseph David Matal

Reg. L1362

Limited recognition

Haynes and Boone, LLP

Washington, DC · 20006

202-654-4533

Nicholas M. Mathews

Reg. 66067

Patent attorney

Hunton & Williams LLP

Washington, DC · 20037

202-955-1804

Thomas J Matikainen

Reg. 73291

Patent attorney

NSIP Law

Washington, DC · 20036

202-429-0020

William J Matney· Jr

Reg. 39292

Patent attorney

RatnerPrestia

Washington, DC · 20005

202-808-7372

Lisa M Matovcik

Reg. 53283

Patent agent

Finnegan Henderson Farabow Garrett & Dunner, LLP

Washington, DC · 20005

202-408-4000

Katharine I Matthews

Reg. 40336

Patent attorney

Intelletech PLLC

Washington, DC · 20013

202-487-5574

Aaron P Maurer

Reg. 44911

Patent attorney

Williams and Connolly, LLP

Washington, DC · 20024

202-434-5282

Eric J Maurer

Reg. 43782

Patent attorney

Boies Schiller Flexner LLP

Washington, DC · 20005

202-237-2727

Common questions

Do patent attorneys in Washington cost more than the national average?

Patent attorney fees vary primarily by experience and complexity of the invention, not by city. A typical provisional patent application in the US runs $1,500 to $5,000; a non-provisional utility filing runs $5,000 to $15,000. Hourly rates in Washington tend to track the broader District of Columbia legal market.

How many USPTO practitioners list a Washington office?

2,587 USPTO-registered patent practitioners list a Washington mailing address on the OEDCI roster. You can sort by firm size and contact each directly using the phone numbers shown.

Can I work with a Washington practitioner remotely?

Yes. All filings happen through USPTO's electronic Patent Center — no in-person presence is required. A Washington-based practitioner is convenient for local inventor signings and in-person meetings but not a requirement for representation.