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, Armstrong World Industries, and Bayer Corporation.

Top cities in Pennsylvania

All practitioners in Pennsylvania

Michael R. Stephenson

Reg. 79682

Patent agent

Buchanan Ingersoll & Rooney PC

Pittsburgh, PA · 15219

412-562-1538

Yuriy Petro Stercho

Reg. 33797

Patent attorney

Pottstown, PA · 19465

610-420-6303

James J Sterling

Reg. 46035

Patent attorney

Greencastle, PA · 17225

305-804-1579

Craig M. Sterner

Reg. 58059

Patent attorney

Armstrong World Industries

Lancaster, PA · 17603

717-396-5710

James R Stevenson

Reg. 38755

Patent attorney

Bayer Corporation

Indianola, PA · 15051-9759

412--40-6-3280

Robert W Stevenson

Reg. 31064

Patent attorney

Caesar Rivise

Philadelphia, PA · 19103

215-567-2010 X112

Duane Arthur Stewart· III

Reg. 54468

Patent attorney

Buchanan Ingersoll & Rooney PC

Pittsburgh, PA · 15219-1410

412-562-1622

David P. Stitzel

Reg. 44360

Patent attorney

Reed Tech, a LexisNexis Company

Horsham, PA · 19044

267-963-7179

Lauren M. Stokes

Reg. 78486

Patent agent

Penn State Law Intellectual Property Clinic

State College, PA · 16801

919-605-2853

Declan J Stone-Murphy

Reg. 81789

Patent agent

State College, PA · 16801

303-710-5935

Chad O. Stouffer

Reg. 70900

Patent attorney

Cozen O'Connor

Philadelphia, PA · 19103

215--66-5-2100

Kyle V Strache

Reg. 66873

Patent attorney

Berwyn, PA · 19312

650-387-6311

Matthew D Strohm

Reg. 47978

Patent attorney

Victaulic

Easton, PA · 18040

610-923-3915

Joni Dale Stutman

Reg. 42173

Patent attorney

Retired

Blue Bell, PA · 19422

703-864-5664

Thomas J Styslinger

Reg. 75185

Patent attorney

NOVA Chemicals

Moon Township, PA · 15108

412-490-4608

Peter K Suchecki

Reg. 75940

Patent attorney

Yardley, PA · 19067

215-260-8057

Sarah E. Suereth

Reg. 78776

Patent attorney

Howmet Aerospace

Pittsburgh, PA · 15212

412-553-2952

Brian G Sullivan

Reg. 50490

Patent agent

Lancaster, PA · 17601

717-892-1468

Daniel A Sullivan· Jr.

Reg. 25068

Patent attorney

New Kensington, PA · 15068

724-335-1331

Rachel A. Sullivan

Reg. 81136

Patent agent

The Webb Law Firm

Pittsburgh, PA · 15222

860-502-5308

Victoria D Summerfield

Reg. 75371

Patent attorney

Troutman Pepper Locke LLP

Pittsburgh, PA · 15219-2507

412-454-5000

Hilary J Sumner

Reg. 65935

Patent attorney

Sumner IP Law PLLC

Lebanon, PA · 17042

717-202-5528

John E. Sumner

Reg. 58699

Patent attorney

Teva Pharmaceuticals

Frazer, PA · 19355

610-786-7299

Travis J Sumpter

Reg. 73881

Patent attorney

Reed Smith Centre

Pittsburgh, PA · 15222-2716

412-288-3131

Bala K Sundararajan

Reg. 50900

Patent attorney

Globus Medical Inc.

Audubon, PA · 19403

610-930-1800

Eugene P Sunday

Reg. 57810

Patent attorney

Flaster Greenberg

Philadelphia, PA · 19103

215-320-3727

Aleksandra Suri

Reg. 55958

Patent agent

Yardley, PA · 19067

267--79-9-4680

Jeffrey A Sutton

Reg. 34028

Patent attorney

Phoenixville, PA · 19460

484-744-0648

Karen Tang-Wai Sutton

Reg. 45292

Patent attorney

Mars, PA · 16046

724-625-8993

Lori Anne D Swanson

Reg. 59048

Patent attorney

ARRIS Group, Inc

Horsham, PA · 19044

215-323-1599

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.