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 Panitch, Schwarze, Belisario & Nadel LLP, Villanova University, and Penn State Law, The Pennsylvania State University.

Top cities in Pennsylvania

All practitioners in Pennsylvania

Donald D Joye

Reg. 29656

Patent agent

Villanova University

Villanova, PA · 19085

610-519-4966

James Thomas Judd

Reg. 901993

Limited recognition

Penn State Law, The Pennsylvania State University

University Park, PA · 16802

801-560-6568

Nathaniel D Judisch

Reg. 50143

Patent agent

Plymouth Meeting, PA · 19462

610-277-4512

Rivka Jungreis

Reg. 59376

Patent attorney

Teva Pharmaceuticals

Horsham, PA · 19044

215--29-3-6336

Vamsi K Kakarla

Reg. 66238

Patent attorney

GLOBUS MEDICAL, INC.

Audubon, PA · 19403

610-930-1800

Lawrence T Kale

Reg. 69214

Patent agent

NOVA Chemicals Inc.

Moon Township, PA · 15108

412-490-4663

James Marlin Kanagy

Reg. 29550

Patent attorney

Milroy, PA · 17063

717-250-0077

Bridget E. Kane

Reg. 82303

Patent attorney

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

Eileen Kane

Reg. 44814

Patent attorney

Penn State Dickinson School of Law

Carlisle, PA · 17013

717-240-5147

Richard F Kane

Reg. 78096

Patent attorney

Howson & Howson LLP

Blue Bell, PA · 19422

215-540-9200

Matthew A Kaness

Reg. 47277

Patent agent

Yardley, PA · 19067

Amanda J Kapur

Reg. 80712

Patent agent

Edgeworth, PA · 15143

713-858-0096

William Snyder Karn

Reg. 29814

Patent attorney

Bellevue, PA · 15202

412-734-1026

Alexander Karpan

Reg. 53099

Patent attorney

Pittsburgh, PA · 15217

412-422-0764

Leslie Leroy Kasten· Jr

Reg. 28959

Patent agent

Panitch, Schwarze, Belisario & Nadel LLP

Philadelphia, PA · 19103

215-965-1200

Stephanie C. Kato

Reg. 73814

Patent attorney

Olympus Corporation of the Americas

Center Valley, PA · 18034

917-227-9916

Kevin S Katona

Reg. 54210

Patent attorney

Highmark Health

Pittsburgh, PA · 15222

412-544-5361

Andrew Bennett Katz

Reg. 34200

Patent attorney

Belles Katz LLC

Horsham, PA · 19044

215-658-1890

Samuel G. Katz

Reg. 79994

Patent attorney

Philadelphia, PA · 19106

516-567-3202

Sandra M Katz

Reg. 51864

Patent agent

Panitch, Schwarze, Belisario & Nadel LLP

Philadelphia, PA · 19103

215-965-1344

William J Kauffman

Reg. 55319

Patent agent

W. J. Kauffman Consulting

Manheim, PA · 17545

717-664-6550

William G. Kaufmann· Jr.

Reg. 72782

Patent attorney

Panitch Schwarze Belisario & Nadel, LLP

Philadelphia, PA · 19103

215-965-1330

Michael Bernard Keehan

Reg. 24530

Patent attorney

Chadds Ford, PA · 19317

Daniel K Keenan

Reg. 53856

Patent attorney

Daniel K Keenan, Esq.

Ridley Park, PA · 19078

484-494-6648

Jeffrie J Keenan

Reg. 40303

Patent attorney

PSEG Services

Hancocks Bridge, PA · 08038

856-339-5429

William P.W. Kehoe

Reg. 81581

Patent attorney

Philadelphia, PA · 19103

215-564-8979

Lorraine P. Keller

Reg. 36166

Patent agent

Pipersville, PA · 18947

215-205-6084

Steven D Keller

Reg. 72389

Patent agent

Lancaster, PA · 17603

919-280-6670

Frank M. Kelley

Reg. 84480

Patent attorney

Canonsburg, PA · 15317

234-788-7986

Steven M. Kellner

Reg. 72908

Patent attorney

Volpe and Koenig, P.C.

Philadelphia, PA · 19103

215-568-6400

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.