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 Fish & Richardson P.C., Finnegan, Henderson, Farabow, Garrett & Dunner, LLP, and Covington & Burling LLP.

Top cities in District of Columbia

All practitioners in District of Columbia

Natalie M Derzko

Reg. 48102

Patent attorney

Covington & Burling LLP

Washington, DC · 20001

202-662-5301

Nirav N Desai

Reg. 69105

Patent attorney

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

Washington, DC · 20005

202-371-2600

Robert H DeSelms

Reg. 54776

Patent agent

Paragen, Inc.

Washington, DC · 20009

202-421-6892

R. P. Detwiler

Reg. 60468

Patent attorney

National Nuclear Security Administration

Washington, DC · 20585

202-586-1371

Paul Devinsky

Reg. 28553

Patent attorney

McDermott, Will & Emery LLP

Washington, DC · 20001

202-756-8369

Peter Thomas deVore

Reg. 60361

Patent attorney

Buchanan Ingersoll & Rooney, PC

Washington, DC · 20006-3807

703-838-6544

Roberto J Devoto

Reg. 55108

Patent attorney

Fish & Richardson P.C.

Washington, DC · 20005

202-626-6393

Conrad J DeWitte· Jr.

Reg. 68210

Patent attorney

U. S. Department of Justice

Washington, DC · 20530

202-307-0459

Robert M DeWitty

Reg. 53927

Patent attorney

DeWitty and Associates

Washington, DC · 20003

202-705-7260

Alexandros R Diamantis

Reg. 66258

Patent attorney

NSIP Law

Washington, DC · 20036

202-429-0020

Justin M. DiBlassio

Reg. 61133

Patent agent

Seyfarth Shaw LLP

Washington, DC · 20004

202-828-3588

Charlene Dickens

Reg. 55990

Patent agent

Washington, DC · 20011

202-291-7440

Nicholas W DiCostanzo

Reg. 48221

Patent attorney

Washington, DC · 20037

202-659-1878

Jennifer M. Dienes

Reg. 71222

Patent attorney

Office of Unfair Import Investigations

Washington, DC · 20436

202-708-5408

Allison W. Dietrich

Reg. 79014

Patent agent

Fish & Richardson P.C.

Washington, DC · 20024

202-626-6423

Paul Edward Dietze

Reg. 45627

Patent attorney

Parker, Poe, Adams & Bernstein, LLP

Washington, DC · 20005

202-854-2815

Andrew J DiFazio

Reg. 63452

Patent attorney

Washington, DC · 20007

207-838-4005

Alexia S M Dilg

Reg. 78052

Patent agent

Cooley LLP

Washington, DC · 20004

202-842-7815

Anthony DiLorenzo

Reg. 52442

Patent agent

Washington, DC · 20043

Michael J Dimino

Reg. 44657

Patent attorney

Arent Fox LLP

Washington, DC · 20006

202-714-5007

Marcelle Dina Zita

Reg. 83865

Patent agent

Washington, DC · 20006

202-505-6688

Kathleen T DiNapoli

Reg. 82294

Patent agent

Fenwick & West LLP

Washington, DC · 20004

202-970-3014

Bryan Christopher Diner

Reg. 32409

Patent attorney

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Washington, DC · 20001

202-408-4000

Cathy C Ding

Reg. 52820

Patent agent

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Washington, DC · 20001-4413

404-653-6560

Xuechen Ding

Reg. 84180

Patent attorney

Banner & Witcoff Ltd

Washington, DC · 20005

202-824-3308

Anthony Dinkins

Reg. 58654

Patent agent

Washington, DC · 20020

202-494-6248

Donald Anthony DiPaula

Reg. 58115

Patent attorney

Jefferson IP Law, LLP

Washington, DC · 20036

202-293-0804

Rachael P. Dippold

Reg. 73015

Patent attorney

Washington, DC · 20008

215-847-6171

Jacqueline A DiRamio

Reg. 66957

Patent agent

VENABLE LLP

Washington, DC · 20001

202-721-5420

Juliet Mitchell Dirba

Reg. 53334

Patent attorney

Smith Baluch

Washington, DC · 20003

512-909-4153

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.