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 Cooley LLP, Quarles & Brady LLP, and Cadwalader, Wickersham & Tapt.

Top cities in District of Columbia

All practitioners in District of Columbia

David R Yohannan

Reg. 37480

Patent attorney

Quarles & Brady LLP

Washington, DC · 20006

202-780-2637

Kristin L Yohannan

Reg. 38665

Patent attorney

Cadwalader, Wickersham & Tapt

Washington, DC · 20001

202-862-2275

Daniel E Yonan

Reg. 53812

Patent attorney

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

Washington, DC · 20005

202-371-2600

Hongsun Yoon

Reg. 57390

Patent attorney

LG Electronics U.S.A., Inc.

Washington, DC · 20005

202-220-6812

Pyong Woo Yoon

Reg. 48194

Patent attorney

United States International Trade Commission

Washington, DC · 20436

202-205-2705

Sohee K Yoon

Reg. 77277

Patent agent

Fish & Richardson PC

Washington, DC · 20024

202-626-7703

Won S. Yoon

Reg. 71058

Patent agent

Fish & Richardson, P.C.

Washington, DC · 20005

202-626-6431

Naoki Yoshida

Reg. 48108

Patent attorney

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Washington, DC · 20001-4413

202-408-4000

Ben Xiaobin You

Reg. 62510

Patent attorney

NSIP LAW

Washington, DC · 20036

202-429-0020

Christopher J. Young· Jr

Reg. 81055

Patent agent

Washington, DC · 20001

301-875-3285

James Hyung Suk Young

Reg. 73078

Patent attorney

Washington, DC · 20439

202-357-6400

Jeffrey G Young· Jr

Reg. 80270

Patent attorney

Morrison & Foerster LLP

Washington, DC · 20037

202-498-8458

John Leonard Young

Reg. 57150

Patent attorney

Independent Contractor Patent Attorney

Washington, DC · 20020-2806

202-426-2400

Betty R Yu

Reg. 69462

Patent agent

Harvest IP Law LLP

Washington, DC · 20004

202-787-5887

Xiaozhen Yu

Reg. 75031

Patent attorney

Cooley LLP

Washington, DC · 20004-2400

202-728-7127

Shanzhong Yuan

Reg. 77035

Patent attorney

Nixon Peabody LLP

Washington, DC · 20001-5327

202-585-8605

Allen C Yun

Reg. 37971

Patent agent

Browdy and Neimark P.L.L.C.

Washington, DC · 20006

202-628-5197

David Yun

Reg. 82545

Patent attorney

Cooley LLP

Washington, DC · 20004-2400

301-943-2730

Lukas M. Zalesky

Reg. 83841

Patent agent

Bookoff McAndrews PLLC

Washington, DC · 20006

771-208-3448

Chen Zang

Reg. 81568

Patent attorney

Finnegan, Henderson, Farabow, Garrett

Washington, DC · 20001-4413

202-408-4000

Matthew D Zapadka

Reg. 72350

Patent attorney

Porzio, Bromberg & Newman P.C.

Washington, DC · 20036

202-517-6313

Rose Acoraci Zeck

Reg. 63130

Patent attorney

Hunton & Williams LLP

Washington, DC · 20037

202-955-1801

Paul J Zegger

Reg. 33821

Patent attorney

Paul Zegger

Washington, DC · 20007

202-232-2896

Daniel Zeilberger

Reg. 65349

Patent attorney

Paul Hastings LLP

Washington, DC · 20036

202-551-1993

John D Zele

Reg. 39887

Patent attorney

Morgan, Lewis & Bockius LLP

Washington, DC · 20004

202-739-3000

Rebecca Neuschatz Zelenka

Reg. 57062

Patent agent

Fried, Frank, Harris, Shriver & Jacobson LLP

Washington, DC · 20006

202-639-7260

Robert W Zelnick

Reg. 36976

Patent attorney

McDermott Will & Emery LLP

Washington, DC · 20001

202-756-8000

Kelly Zeng

Reg. 74361

Patent attorney

Wilmer Hale

Washington, DC · 20006

202-663-6761

Fan Zhang

Reg. 73589

Patent agent

Sheppard, Mullin, Richter & Hampton LLP

Washington, DC · 20006

202-747-3282

Helen H Zhang

Reg. 68872

Patent attorney

Federal Communications Commission

Washington, DC · 20554

202-418-0687

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.