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 Wenderoth, Lind & Ponack, L.L.P., Hahn & Voight Law Offices PLLC, and Baker & Hostetler LLP.

Top cities in District of Columbia

All practitioners in District of Columbia

Erin M. Hadi

Reg. 79904

Patent agent

Washington, DC · 20008

703-973-2561

William D Hahm

Reg. 44142

Patent agent

Wenderoth, Lind & Ponack, L.L.P.

Washington, DC · 20036

202-721-8200

Roger C Hahn

Reg. 46376

Patent attorney

Hahn & Voight Law Offices PLLC

Washington, DC · 20005

202-637-0021

Robert L Hails· Jr

Reg. 39702

Patent attorney

Baker & Hostetler LLP

Washington, DC · 20036

202-861-1754

Dagim Tilahun Hailu

Reg. 75722

Patent attorney

Haynes and Boone, LLP

Washington, DC · 20006

202-654-4582

Tsion Hailu

Reg. 64106

Patent agent

Washington, DC · 20005

773-724-1267

Julia L Haines

Reg. 72992

Patent attorney

Mayer Brown

Washington, DC · 20006

202-687-3279

Kenneth W Hairston

Reg. 28218

Patent attorney

Fitch, Even, Tabin & Flannery LLP

Washington, DC · 20037-1164

202-419-7000

Sohrab Hajarian

Reg. 75442

Patent attorney

Akin Gump Strauss Hauer & Feld LLP

Washington, DC · 20006

202-887-4511

Michael O. Halas

Reg. 59371

Patent attorney

Deloitte

Washington, DC · 20004

202-220-2719

Christopher L Hale

Reg. 48940

Patent attorney

U.S. Department of Justice

Washington, DC · 20004

202-305-0327

Charlene Ann Haley

Reg. 52983

Patent attorney

washington, DC · 20374

360-396-8612

Benjamin P. Halkowski

Reg. 79991

Patent attorney

Washington, DC · 20024

202-220-6849

Thomas L Halkowski

Reg. 48551

Patent attorney

Fish & Richardson P.C.

Washington, DC · 20024

302-559-2906

Maximilian Ferrell Hall

Reg. 77766

Patent attorney

VeraSafe

Washington D.C., DC · 20003

617-398-7067

Robert A Hall

Reg. 66235

Patent attorney

Mei & Mark, LLP

Washington, DC · 20035-5981

888-860-5678

Thomas L Hall

Reg. 54147

Patent attorney

Cleary Gottlieb Steen & Hamilton

Washington, DC · 20006

202-974-1615

Miranda A M Hallett

Reg. 75606

Patent attorney

Arnold & Porter Kaye Scholer, LLP

Washington, DC · 20001-3743

202-942-5982

Stephanie S. Ham

Reg. 81020

Patent agent

Washington, DC · 20001-4413

703-389-1274

Sarah Elizabeth Hamblin

Reg. 48628

Patent attorney

Adduci Mastriani and Schaumberg LLP

Washington, DC · 20036

202-467-6300

Arash Hamidi

Reg. 74010

Patent attorney

Bookoff McAndrews PLLC

Washington, DC · 20006

202-313-7194

Charles D Hammond

Reg. 73287

Patent attorney

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

Washington, DC · 20005

202-772-8551

Austin K Hampton

Reg. 61665

Patent agent

Covington & Burling LLP

Washington, DC · 2004-2401

202-662-5697

Bobby Gene Hampton· III

Reg. 79136

Patent attorney

Wilmer Cutler Pickering Hale & Dorr LLP

Washington, D.C., DC · 20037

417-773-6789

Philip G Hampton· II

Reg. 30642

Patent attorney

Polsinelli PC

Washington, DC · 20005

202-791-8792

Newman Jong-Jin Han

Reg. 74347

Patent agent

Cooley LLP

Washington, DC · 20004-2400

202-728-7047

Yuanzhang Han

Reg. 57233

Patent attorney

NSIP Law

Washington, DC · 20036

202-429-0020

Brian William Hannon

Reg. 32778

Patent attorney

Sughrue Mion, PLLC

Washington, DC · 20006

202-293-7060

Donald W Hanson

Reg. 27133

Patent attorney

Krate, Quintos & Hanson LLP

Washington, DC · 20005

202-659-2930

M. Aamir Haq

Reg. 61092

Patent attorney

Foley and Lardner LLP

Washington, DC · 20007

202-672-5394

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.