District of Columbia

Patent attorneys in District of Columbia

District of Columbia hosts 2,699 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 Sterne, Kessler, Goldstein & Fox P.L.L.C., Steptoe & Johnson LLP, and Sughrue Mion, PLLC.

Top cities in District of Columbia

All practitioners in District of Columbia

John T Callahan

Reg. 32607

Patent attorney

Sughrue Mion, PLLC

Washington, DC · 20006

202-663-7387

Karina N Calliste

Reg. 75834

Patent agent

Fish & Richardson, P.C.

Washington, DC · 20005

202-629-6363

John N. Calve

Reg. 52685

Patent attorney

Washington, DC · 20007-4349

202-412-4892

Frederick F Calvetti

Reg. 28557

Patent attorney

Washington, DC · 20016

202-686-5440

Paul A Calvo

Reg. 57913

Patent attorney

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

Washington, DC · 20005

202-772-8846

Christian A. Camarce

Reg. 65021

Patent attorney

Sterne, Kessler, Goldstein & Fox PLLC

Washington, DC · 20005

202-772-8895

Nicholas J Camillo

Reg. 76965

Patent attorney

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Washington, DC · 20001

202-408-4276

Gina L. Campanelli

Reg. 82456

Patent agent

Washington, DC · 20001

415-672-7221

Christopher C Campbell

Reg. 37291

Patent attorney

King & Spalding

Washington, DC, DC · 20006

202-626-5578

Kristin M. Campbell

Reg. 70384

Patent agent

Foley & Lardner LLP

Washington, DC · 20007

202-295-4482

Jaume M Canaves

Reg. 63929

Patent attorney

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

Washington, DC · 20005

202-371-2600

Bradford A Cangro

Reg. 58478

Patent attorney

PV Law LLP

Washington, DC · 20015

202-869-4667

Bryan J. Cannon

Reg. 72877

Patent agent

Washington, DC · 20004

202-220-1257

Alan I Cantor

Reg. 28163

Patent attorney

NSIP Law

Washington, DC · 20036

202-429-0020

Linlin Cao

Reg. 77642

Patent agent

Baker Botts LLP

Washington, DC · 20001

202-639-7882

Yang Cao

Reg. 800031

Limited recognition

Kilpatrick Townsend & Stockton LLP

Wasington, DC · 20004

202-481-9944

Emma L. Capitanelli

Reg. 83158

Patent agent

Washington, DC · 20001

202-699-2956

Katherine D. Cappaert

Reg. 71639

Patent attorney

Steptoe & Johnson LLP

Washington, DC · 20036

202-429-6252

John M Caracappa

Reg. 43532

Patent attorney

Steptoe & Johnson LLP

Washington, DC · 20036

202-429-6267

Michael J Caridi

Reg. 56171

Patent attorney

Westerman Hattori Daniels and Adrian

Washington, DC · 20036

202-822-1100

Janine A Carlan

Reg. 42387

Patent attorney

ArentFox Schiff LLP

Washington, DC · 20006-5344

202-715-8506

Amy L Carlson

Reg. 52698

Patent attorney

Stoel Rives, LLP

Washington, DC · 20005

202-398-1762

Craig E. Carlson

Reg. 76703

Patent agent

Fish & Richardson

Washington, DC · 20005

202-638-6509

Hugh C Carney

Reg. 56318

Patent agent

American Bankers Association

Washington, DC · 20036

202-663-5324

Robert T Carney

Reg. 35841

Patent attorney

Caplin & Drydale, Chartered

Washington, DC · 20036

202-862-5040

Rosalind S E Carney

Reg. 71219

Patent agent

Washington, DC · 20002

202-230-8963

Christina M Carone

Reg. 78423

Patent attorney

Weil, Gotshal & Manges LLP

Washington, DC · 20036

202-682-7000

James R Carpenter

Reg. 62747

Patent attorney

Faegre Drinker Biddle & Reath LLP

Washington, DC · 20005-1209

202-230-5140

Thomas J. Carr· Jr.

Reg. 79106

Patent attorney

Sheppard Mullin Richter & Hampton, LLP

Washington, DC · 20006-6801

202-747-2335

Aliza George Carrano

Reg. 70637

Patent attorney

Willkie Farr & Gallagher LLP

Washington, DC · 20006

202-303-1106

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?

2,699 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.