Washington, District of Columbia

Patent attorneys in Washington

Washington, District of Columbia is home to 2,587 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 Sughrue Mion, PLLC, Finnegan, Henderson, Farabow, Garrett & Dunner, LLP, and Fish & Richardson P.C..

Albert DeCady

Reg. 60658

Patent attorney

Sughrue Mion, PLLC

Washington, DC · 20037

Frank A DeCosta· III

Reg. 41705

Patent attorney

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Washington, DC · 20001-4413

202-408-4012

Lauren A Degnan

Reg. 40584

Patent attorney

Fish & Richardson P.C.

Washington, DC · 20005

202-626-6392

Monisha Deka

Reg. 61571

Patent attorney

White & Case LLP

Washington, DC · 20005

202-626-3655

Tyler P. Del Rosario

Reg. 72943

Patent attorney

Sughrue Mion, PLLC

Washington, DC · 20006

202-857-2257

Gregory S DeLassus

Reg. 71695

Patent attorney

Rothwell, Figg, Ernst & Manbeck, P.C.

Washington, DC · 20001

202-772-5690

John D Dellinger

Reg. 50436

Patent attorney

United States Department of Agriculture

Washington, DC · 20250-1400

202-239-4531

Makan Delrahim

Reg. 44059

Patent agent

US Department of Justice, Antitrust Division

Washington, DC · 20006

202-305-4517

Benjamin C Deming

Reg. 65307

Patent attorney

DNL Zito

Washington, DC · 20036

626-808-1838

Yong Deng

Reg. 81035

Patent attorney

Allbelief Law Firm

Washington, DC · 20001

571-443-9140

Scott T. Denion

Reg. 76757

Patent agent

Troutman Pepper Hamilton Sanders LLP

Washington, DC · 20004

202-274-1955

Donald Lee Dennison

Reg. 19920

Patent attorney

Butzel Long

Washington, DC · 20006

202-454-2877

Sandhya Deo

Reg. 65841

Patent attorney

Cooley, LLP

Washington, DC · 20004-2400

202-842-7800

Cynthia Louise DeRenzo

Reg. 60789

Patent attorney

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

Washington, DC · 20005

202-772-8526

Pier D DeRoo

Reg. 69340

Patent attorney

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Washington, DC · 20001

202-408-4000

Wesley E. Derryberry

Reg. 71594

Patent attorney

Wilson Sonsini Goodrich & Rosati

Washington, DC · 20006

202-973-8824

Erdal Riza Dervis

Reg. 51612

Patent attorney

Baker & Hostetler, LLP

Washington, DC · 20036-5304

202-861-1744

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

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?

2,587 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.