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, Finnegan, Henderson, Farabow, Garrett & Dunner, LLP, and U.S. International Trade Commission.

Top cities in District of Columbia

All practitioners in District of Columbia

Joshua D Horowitz

Reg. 80217

Patent agent

US Court of Appeals for the Federal Circuit

Washington, DC · 20005

919-710-7220

Matthew H. Horton

Reg. 72424

Patent attorney

Foley & Lardner LLP

Washington, DC · 20007

202-295-4016

Xufeng Hou

Reg. 800130

Limited recognition

Sughrue Mion, PLLC

Washington, DC · 20006-1811

202-663-7917

Connor S Houghton

Reg. 77830

Patent attorney

Reichman Jorgensen Lehman & Feldberg LLP

Washington, DC · 20036

202-894-7315

Kyle W. Howarth

Reg. 82053

Patent agent

Finnegan, Henderson, Farabow, Garrett & Dunner LLP

Washington, DC · 20001

771-202-2938

Brandon Wesley Howell

Reg. 76854

Patent attorney

Paul Hastings LLP

Washington, DC · 20036

202-551-1741

Jeffrey J Howell

Reg. 46402

Patent attorney

Washington, DC · 20036

202-293-0444

Christopher A Hower

Reg. 59308

Patent attorney

Washington, DC · 20036

Christopher C. Howes

Reg. 79544

Patent agent

Finnegan, Henderson, Farabow, Garrett & Dunner LLP

Washington, DC · 20001

202-408-4356

Alexandra E Hoyt

Reg. 80697

Patent agent

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Washington, DC · 20001

202-412-6204

Alfred Francis Hoyte· Jr

Reg. 33512

Patent agent

Washington, DC · 20012

202-723-2021

Peter T Hrubiec

Reg. 78162

Patent attorney

Bookoff McAndrews PLLC

Washington, DC · 20006

202-808-3941

Joseph P Hrutka

Reg. 53918

Patent attorney

Washington, DC · 20035

202-429-0020

Joseph Hsiao

Reg. 51822

Patent attorney

U.S. Department of the Interior

Washington, DC · 20240

202-219-1651

Thomas W Hsieh

Reg. 70540

Patent attorney

Arent Fox LLP

Washington, DC · 20036

202-350-3625

Bryan K. Hsu

Reg. 72762

Patent attorney

Sterne, Kessler, Goldstein & Fox PLLC

Washington, DC · 20005

202-772-8912

Jeffrey T Hsu

Reg. 45373

Patent attorney

U.S. International Trade Commission

Washington, DC · 20436

202-205-2579

John K Hsu

Reg. 45563

Patent attorney

Schiff Hardin LLP

Washington, DC · 20001

202-778-6467

Lee Hsu

Reg. 39716

Patent attorney

Hunton & Williams LLP

Washington, DC · 20037

202-955-1995

Geng Hua

Reg. 82659

Patent attorney

Cozen O'Connor P.C.

Washington, DC · 20036

202-280-6505

Hsin-Yuan Huang

Reg. 71647

Patent attorney

Sheppard Mullin Richter & Hampton LLP

Washington, DC · 20006

202-747-3260

Sam Huang

Reg. 48430

Patent attorney

Washington, DC · 20010

202-997-8555

Emma K. Huckestein

Reg. 83826

Patent agent

Morrison Foerster

Washington, DC · 20037

202-887-6932

Parker B Hudson

Reg. 80698

Patent attorney

Faegre Drinker Biddle & Reath LLP

Washington, DC · 20005

202-230-5262

Karl A Hudspith

Reg. 78329

Patent attorney

Wilson, Sonsini, Goodrich & Rosati

Washington, DC · 20006-3817

202-973-8800

James P. Hughes

Reg. 64940

Patent attorney

U.S. Department of Justice - Civil Division

Washington, DC · 20530

202-616-3788

Panyin A Hughes

Reg. 55288

Patent agent

U.S. International Trade Commission

Washington, DC · 20436

202-205-3042

Scott A Hughes

Reg. 68385

Patent agent

Hogan Lovells US LLP

Washington, DC · 20004

202-637-3659

William G Hughes· Jr

Reg. 46112

Patent attorney

Brake Hughes Bellermann PLC

Washington, DC · 20006

202-470-6452

Brenda J. Huneycutt

Reg. 58664

Patent attorney

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Washington, DC · 20001-4413

202-216-5293

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.