District of Columbia

Patent attorneys in District of Columbia

District of Columbia hosts 2,661 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 District of Columbia. 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 Finnegan, Henderson, Farabow, Garrett & Dunner, LLP, Haynes and Boone, LLP, and Hunton & Williams LLP.

Top cities in District of Columbia

All practitioners in District of Columbia

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

Simon C. Maxwell

Reg. 82086

Patent agent

Jones Day

Washington, DC · 20001

240-600-9600

Christopher Laurence May

Reg. 53286

Patent agent

Massey & Gail LLP

Washington, DC · 20024

202-643-2712

David L. May

Reg. 58760

Patent attorney

Nixon Peabody, LLP

Washington, DC · 20001

202-585-8000

Timothy James May

Reg. 41538

Patent attorney

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Washington, DC · 20001-4413

202-408-4447

Robert S Mayer

Reg. 38544

Patent attorney

Potomac Law Group

Washington, DC · 20004

646-820-0206

Shawn-Marie Mayrand

Reg. 48986

Patent agent

Heller Ehrman LLP

Washington, DC · 20036-3001

202-912-2160

Eli Mazour

Reg. 59318

Patent attorney

Foley & Lardner LLP

Washington, DC · 20007

202-295-4090

Roland G McAndrews

Reg. 41450

Patent attorney

Bookoff McAndrews, PLLC

Washington, DC · 20037

202-808-3550

Timothy P McAnulty

Reg. 56939

Patent attorney

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Washington, DC · 20001

202-408-4348

Corey S. G. McCaffrey

Reg. 70690

Patent attorney

Afiniti

Washington, DC · 20006

202-695-3791

Luke J. McCammon

Reg. 70691

Patent attorney

Finnegan, Henderson, Farabow,

Washington, DC · 20001

202-408-4273

Clifton E McCann

Reg. 29565

Patent attorney

FisherBroyles, LLP

Washington, DC · 20005

202-495-1192

James V. McCann

Reg. 83428

Patent agent

Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.

Washington, DC · 20004

202-434-7315

Steven McCann

Reg. 34958

Patent attorney

Washington, DC · 20003-0249

202-479-1248

Christine Hoeft McCarthy

Reg. 41844

Patent attorney

Barnes & Thornburg LLP

Washington, DC · 20006

202-371-6371

Kathryn M McCarthy

Reg. 82306

Patent attorney

Hogan Lovells

Washington, DC · 20004

202-637-8654

Neil M McCarthy

Reg. 43435

Patent attorney

Knobbe Martens Olson and Bear LLP

Washington, DC · 20006

202-640-6400

Patrick J McCarthy

Reg. 62762

Patent attorney

Goodwin Procter LLP

Washington, DC · 20036

202-346-4000

Linzy T. McCartney

Reg. 61886

Patent attorney

Facebook

Washington, DC · 20004

240-643-0691

Sophia M. McClain

Reg. 84053

Patent agent

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Washington, DC · 20001

202-408-4415

James S McClellan

Reg. 60568

Patent agent

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Washington, DC · 20001

202-408-4000

Brendan N McCommas

Reg. 73119

Patent agent

Dinsmore & Shohl

Washington, DC · 20005

202-372-9127

Common questions

Do I need a patent attorney based in District of Columbia?

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 District of Columbia-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 District of Columbia?

2,661 active USPTO-registered patent practitioners list a District of Columbia 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.