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 The Webb Law Firm, Saxton & Stump, and Riverside Law.

Top cities in Pennsylvania

All practitioners in Pennsylvania

Kenneth N Nigon

Reg. 31549

Patent agent

Wayne, PA · 19087

610-308-9719

Philip D. Nigon

Reg. 76620

Patent attorney

Riverside Law

Wayne, PA · 19087

610-572-3639

Gary A. Nitowski

Reg. 52497

Patent attorney

K&L Gates LLP

Pittsburgh, PA · 15222-2613

412-355-6272

Tommy J. Noh

Reg. 70206

Patent attorney

Johnson & Johnson

Spring House, PA · 19002

445-400-4284

Norman L Norris

Reg. 24196

Patent attorney

Birchrunville, PA · 19421

610-827-7417

Christopher L North

Reg. 50433

Patent attorney

Panitch Schwarze

Philadelphia, PA · 19103

215-965-1276

Kelley C Norton

Reg. 50466

Patent agent

Avondale, PA · 19311

610-969-9314

Todd A Norton

Reg. 48636

Patent attorney

Volpe and Koenig P.C.

Philadelphia, PA · 19103

215-255-9135

Randall Arthur Notzen

Reg. 36882

Patent attorney

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

Ryan A. Notzen

Reg. 75710

Patent agent

Cranberry Twp, PA · 16066

724-316-8262

Mark A Nuzzo

Reg. 53396

Patent attorney

Kirkpatric and Lockhart

Pittsburgh, PA · 15222

412-355-6292

K Scott O'Brian

Reg. 42946

Patent attorney

McNees Wallace & Nurick

Harrisburg, PA · 17108

717-237-5492

Kevin T O'Brien

Reg. 78851

Patent agent

Saul Ewing Arnstein & Lehr LLP

Philadelphia, PA · 19102

215-972-7189

Steven L O'Donnell

Reg. 53402

Patent attorney

Saxton & Stump

Lancaster, PA · 17601

717-556-1032

Elizabeth M O'Donoghue

Reg. 69190

Patent attorney

Armstrong Teasdale LLP

Philadelphia, PA · 19103

267-780-2012

Nicole J. O'Hara

Reg. 67636

Patent attorney

Pierson Ferdinand LLP

Philadelphia, PA · 19103

215-650-3203

Joseph Patrick O'Malley

Reg. 36226

Patent attorney

West Chester, PA · 19382

415-350-6823

Baha A Obeidat

Reg. 66827

Patent attorney

Volpe Koenig PC

Philadelphia, PA · 19103

215-568-6400

Daniel E. Oberdick· Jr.

Reg. 70997

Patent attorney

Philadelphia, PA · 19107

717-870-9449

David G Oberdick

Reg. 39527

Patent attorney

Meyer Unkovic & Scott, LLP

Pittsburgh, PA · 15222

412-456-2881

Ross W. Oberdick

Reg. 70444

Patent attorney

Red Lion, PA · 17356

717-968-4911

Leah Mae M. Octavio

Reg. 72852

Patent agent

GlaxoSmithKline

Collegeville, PA · 19426

267-273-4322

Ourmazd S Ojan

Reg. 38065

Patent attorney

Warminster, PA · 18974

267-973-4790

Andrew L. Oltmans

Reg. 56074

Patent attorney

Saxton & Stump

Lancaster, PA · 17601

717-556-1049

Thomas J Onka

Reg. 42053

Patent attorney

Technology, Patents & Licensing, Inc.

Doylestown, PA · 18901

267-880-1720

Bryan H Opalko

Reg. 40751

Patent attorney

Buchanan Ingersoll, PC

Pittsburgh, PA · 15219

412-562-1893

Bennington D. Opdahl

Reg. 82724

Patent agent

Erdenheim, PA · 19038

215-530-8804

Alia M Orbin

Reg. 68487

Patent agent

Plymouth Meeting, PA · 19462

610-390-7234

Joseph F Oriti

Reg. 47835

Patent attorney

Baker & Hostetler LLP

Philadelphia, PA · 191004

215-568-3100

Russell D Orkin

Reg. 25363

Patent attorney

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

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.