ZIP 20850

Patent attorneys in ZIP code 20850 · Maryland

ZIP code 20850 in Maryland has 60 USPTO-registered patent practitioners listed at addresses inside the ZIP. Every practitioner shown holds an active license to practice before the US Patent and Trademark Office. Local offices include Epstein and Gerken and Ai & Associates.

All practitioners

Julia Ai

Reg. 48353

Patent attorney

Ai & Associates

Rockville, MD · 20850

301-294-0780

Laith Q Al-Mawsawi

Reg. 60883

Patent agent

Human Genome Sciences, Inc.

Rockville, MD · 20850

240-314-4400 EXT. 2070

Raymond F Anthracite

Reg. 61835

Patent attorney

The Law Office of Raymond F. Anthracite

Rockville, MD · 20850

301-556-8709

Sheena M. Aris

Reg. 78459

Patent agent

Rockville, MD · 20850

Jeffrey I Auerbach

Reg. 32680

Patent attorney

Rockville, MD · 20850-3662

301-910-4123

Helene Christina Carlson

Reg. 47473

Patent attorney

Meso Scale Diagnostics, LLC.

Rockville, MD · 20850

240-314-2695

Robert G Crockett

Reg. 42448

Patent attorney

SVPLG

Rockville, MD · 20850

571-278-8695

Ann Oliver Portell Daniels

Reg. 45839

Patent attorney

Glaxo Smith Kline Vaccines Legal

Rockville, MD · 20850

202-308-5245

Mark J DeBoy

Reg. 66983

Patent agent

Edell, Shapiro & Finnan, LLC

Gaithersburg, MD · 20850

240-864-2459

William F Dee

Reg. 46657

Patent attorney

National Institutes of Health

Rockville, MD · 20850

240-276-5717

Martin P Devenport

Reg. 62517

Patent agent

Amplimmune Inc.

Rockville, MD · 20850

301-309-9800

John J Dials· Jr

Reg. 39656

Patent attorney

Rockville, MD · 20850

240-888-3799

Keary L Dunn

Reg. 51637

Patent attorney

Otsuka Maryland Research Inst

Rockville, MD · 20850

240-683-3185

Robert H Epstein

Reg. 24353

Patent attorney

Epstein and Gerken

Rockville, MD · 20850

301-610-7634

Gillian M Fenton

Reg. 36508

Patent attorney

GSK Vaccines

Rockville, MD · 20850

240-938-0496

Debra J. Flint

Reg. 60846

Patent agent

Rockville, MD · 20850

443-497-2525

Patrick L Fogle

Reg. 58301

Patent agent

Lonza America

Rockville, MD · 20850

301-401-9448

William L Freeh

Reg. 21071

Patent attorney

Chevy Chase, MD · 20850

301-709-6950

Patrick J Frenchick

Reg. 41025

Patent agent

Cyt Immune Sciences, Inc

Rockville, MD · 20850

240-864-2796

Ami Dhruv Gadhia

Reg. 59472

Patent agent

National Center for Advancing Translational

Rockville, MD · 20850

301-217-6098

Karen M Gerken

Reg. 31161

Patent agent

Epstein and Gerken

Rockville, MD · 20850

301-610-7634

Thomas F Gillespie· III

Reg. 63758

Patent attorney

Emergent BioSolutions Inc.

Rockville, MD · 20850

301-795-1806

Colin C Heitzmann

Reg. 55256

Patent attorney

Travere Therapeutics

ROCKVILLE, MD · 20850

202-290-5702

Michael P. Hsur

Reg. 65894

Patent attorney

Rockville, MD · 20850

301-208-1718

Yingling Huang

Reg. 70101

Patent agent

U.S. Federal Agency

Rockville, MD · 20850

240-276-6017

Kunihiko P Ishikawa

Reg. 61696

Patent attorney

Advanced BioScience Laboratories, Inc.

Rockville, MD · 20850

301--81-6-5445

Donald Arthur Kettlestrings

Reg. 24573

Patent attorney

Donald A. Kettlestrings Esq.

Rockville, MD · 20850

301-762-1870

Paul Clark Kimball

Reg. 34641

Patent attorney

Paul C. Kimball & Associates, PC

Rockville, MD · 20850

301-455-8688

Katherine J Kopeikina

Reg. 78211

Patent agent

MacroGenics

Rockville, MD · 20850

240-473-2154

Jianming Li

Reg. 55381

Patent agent

U.S. Food and Drug Administration

Rockville, MD · 20850

301-827-2247

Common questions

Do patent attorneys in ZIP 20850 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 ZIP 20850 tend to track the broader Maryland legal market.

How many USPTO practitioners list a ZIP 20850 office?

60 USPTO-registered patent practitioners list a ZIP 20850 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 ZIP 20850 practitioner remotely?

Yes. All filings happen through USPTO's electronic Patent Center — no in-person presence is required. A ZIP 20850-based practitioner is convenient for local inventor signings and in-person meetings but not a requirement for representation.