Pennsylvania

Patent attorneys in Pennsylvania

Pennsylvania hosts 1,920 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 Pennsylvania. 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 Buchanan Ingersoll & Rooney PC, AMREP Corporation, and Eckert Seamans.

Top cities in Pennsylvania

All practitioners in Pennsylvania

John M. Viola

Reg. 83591

Patent agent

Wayne, PA · 19087

201-655-9603

Christopher V. Vitale

Reg. 48013

Patent attorney

AMREP Corporation

Havertown, PA · 19083

610-487-0901

Eugene A Vittone· II

Reg. 60186

Patent attorney

Bentleyville, PA · 15314

724-986-6470

Helen H. Vogelbacker

Reg. 67760

Patent agent

Drexel Hill, PA · 19026

215-837-7823

Mark T. Vogelbacker

Reg. 58877

Patent attorney

Eckert Seamans

Philadelphia, PA · 19102

215-851-8504

Frederick G Vogt

Reg. 70115

Patent attorney

Iovance Biotherapeutics, Inc.

West Norriton, PA · 19403

610-715-7577

Marina Volin

Reg. 52328

Patent attorney

Caesar Rivise Bernstein Cohen and Pokotilow LTD

Philadelphia, PA · 19103

215-567-2010

Joanne M Volosky

Reg. 63676

Patent agent

Parata Systems LLC

Munhall, PA · 15120

412-657-3293

Anthony S Volpe

Reg. 28377

Patent attorney

Volpe and Koenig PC

Philadelphia, PA · 19103

215-568-6400

Dora L. von Trentini

Reg. 84130

Patent agent

Yardley, PA · 19067

267-252-7847

Matthew S. Voog

Reg. 71870

Patent attorney

Condo Roccia Koptiw

Philadelphia, PA · 19103

215-558-5740

James G Vouros

Reg. 34453

Patent attorney

The Dow Chemical Company

Collegeville, PA · 19426

610-244-7836

Armand M Vozzo· Jr

Reg. 28918

Patent attorney

Law Offices Of Armand M Vozzo Jr

Doylestown, PA · 18901

215-348-4733

Carla J Vrsansky

Reg. 36958

Patent attorney

Buchanan Ingersoll & Rooney PC

Pittsburgh, PA · 15219

412-562-1639

Richard P Wagner

Reg. 43227

Patent agent

University Of Pennsylvania Law School

Philadelphia, PA · 19104

Robert L. Wagner

Reg. 63924

Patent attorney

Buchanan Ingersoll & Rooney PC

Pittsburgh, PA · 15219-4413

412-562-8800

William E Wagner· III

Reg. 53731

Patent agent

Perkasie, PA · 18944

215-258-6397

Craig M Waller

Reg. 54771

Patent attorney

REWYNDR LLC

Pittsburgh, PA · 15212

412-663-1121

Christina R Walsh

Reg. 61553

Patent attorney

Volpe and Koenig

Philadelphia, PA · 19103

215-568-6400

Hui Wan

Reg. 71846

Patent agent

Sewickley, PA · 15143

412-888-7180

Jinhui Wang

Reg. 66561

Patent agent

Bryn Mawr, PA · 19010

267-885-8031

Joseph C Wang

Reg. 44391

Patent attorney

American Regent, Inc.

Norristown, PA · 19403

631-772-3519

Pamela Wang

Reg. 83278

Patent agent

Howson & Howson LLP

Blue Bell, PA · 19422

215-540-9200

Serenity M Wang

Reg. 69120

Patent agent

Philadelphia, PA · 19123

510-847-7532

P Richard Warburton

Reg. 54568

Patent attorney

ChemDAQ Inc.

Pittsburgh, PA · 15205

412-787-0202 X 810

Kenneth W Wargo

Reg. 33464

Patent attorney

U.S. Bankruptcy Court for the Western

Erie, PA · 16501

814-464-9761

Gwynedd Warren

Reg. 45200

Patent attorney

GlaxoSmith Kline

King of Prussia, PA · 19406-0939

610-270-7241

Lucindia Yvette Warren

Reg. 47775

Patent attorney

Iroko Pharmaceuticals, LLC

150 Rouse Boulevard, PA · 19112

267-546-1443

Brian J Watkins

Reg. 55899

Patent attorney

Philadelphia, PA · 19103

215-932-5755

David C. Watkins

Reg. 62504

Patent attorney

Nuna Baby Essentials, Inc.

Morgantown, PA · 19543

610-714-0097

Common questions

Do I need a patent attorney based in Pennsylvania?

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 Pennsylvania-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 Pennsylvania?

1,920 active USPTO-registered patent practitioners list a Pennsylvania 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.