Washington, District of Columbia

Patent attorneys in Washington

Washington, District of Columbia is home to 2,626 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 Fish & Richardson P.C., Finnegan, Henderson, Farabow, Garrett & Dunner, LLP, and National Nuclear Security Administration.

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

Gregory S Discher

Reg. 42488

Patent attorney

Covington & Burling LLP

Washington, DC · 20001

202-662-5485

Amanda J Dittmar

Reg. 73217

Patent agent

Bookoff McAndrews PLLC

Washington, DC · 20037

202-803-8068

Mayankkumar M Dixit

Reg. 44064

Patent attorney

Naval Sea Systems Command

Washington, DC · 20376

202-781-2788

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?

2,626 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.