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 Paul & Paul, Ballard Spahr LLP, and Johnson & Johnson PRD.

Top cities in Pennsylvania

All practitioners in Pennsylvania

John Sowden Child· Jr

Reg. 28833

Patent attorney

Paul & Paul

Philadelphia, PA · 19103-2728

215-568-4900

Michael J Chimes

Reg. 51287

Patent attorney

Audubon, PA · 19403

610-409-0219

Brian J. Chin

Reg. 79193

Patent attorney

Hershey, PA · 17033

901-341-9528

John A Chionchio

Reg. 40954

Patent attorney

Ballard Spahr LLP

Philadelphia, PA · 19103

215-864-8842

George Chiu

Reg. 67728

Patent agent

Johnson & Johnson PRD

Spring House, PA · 19477

215-628-5632

Taewoo Cho

Reg. 76334

Patent attorney

GSK

Collegeville, PA · 19426

610-917-7000

Yohan Cho

Reg. 84510

Patent agent

Chesterbrook, PA · 19087

215-397-7618

Dongwook C. Choe

Reg. 83205

Patent agent

Philadelphia, PA · 19104

484-639-9053

Andrew Y Chou

Reg. 70617

Patent agent

Schnader Harrison Segal & Lewis LLP

Philadelphia, PA · 19103

215-751-2000

Eugene Chovanes

Reg. 20373

Patent attorney

Jackson and Chovanes

Bala-Cynwyd, PA · 19004

610-667-4392

Julie Chovanes

Reg. 33481

Patent attorney

Chovanes Law LLC

Philadelphia, PA · 19118

610-648-3994

Thomas Daniel Christenbury

Reg. 31750

Patent attorney

DLA Piper US LLP

Philadelphia, PA · 19103

215-656-3381

Michael A Christini

Reg. 38843

Patent attorney

Bala Cynwyd, PA · 19004

703-786-3790

Jennifer Chung

Reg. 63992

Patent attorney

ACCUWEATHER, INC.

State College, PA · 16803

646-874-2451

Woo-Hyeong Chung

Reg. 74881

Patent agent

The Pennsylvania State University

State College, PA · 16801

814-965-6279

Joseph A Ciardi

Reg. 64760

Patent agent

McCarter & English, LLP

Philadelphia, PA · 19103

215-979-3834

John P Ciccarelli

Reg. 67712

Patent attorney

LivaNova PLC

Pittsburgh, PA · 15238

412-963-7770

Daniel P Cillo

Reg. 25108

Patent attorney

Eckert Seamans Cherin and Mellott LLC

Pittsburgh, PA · 15219

412-566-5903

Catherine R Cirrincione

Reg. 69035

Patent attorney

Buchanan Ingersoll & Rooney LLP

Pittsburgh, PA · 15219-1410

412-562-1580

Elizabeth A.G. Cisar

Reg. 71727

Patent agent

North Wales, PA · 19454

267-470-4842

Rose A Ciulla-Bohling

Reg. 70618

Patent agent

Lansdale, PA · 19446

610-584-9027

Thomas J. Clare

Reg. 72458

Patent attorney

Ice Miller LLP

Philadelphia, PA · 19103

215-377-5030

Bryan P. Clark

Reg. 60465

Patent attorney

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

Jeanne M. Clark

Reg. 83731

Patent attorney

Boalsburg, PA · 16827

410-610-2857

Jennifer E Clark

Reg. 60585

Patent attorney

Philadelphia, PA · 19107

267-817-5917

Richard K Clark

Reg. 40560

Patent attorney

Levittown, PA · 19056

215-949-0203

Richard R Clikeman

Reg. 51329

Patent agent

Intellipreneur Consulting, LLC

Doylestown, PA · 18901

267-880-0168

Thomas J Clinton

Reg. 40561

Patent attorney

Vesuvius

Pittsburgh, PA · 15275

412-429-1800

Craig G Cochenour

Reg. 33666

Patent attorney

North Huntingdon, PA · 15642

412-400-5695

Francis J Coffey

Reg. 71776

Patent attorney

Fort Washington, PA · 19034

732-682-6084

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.