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 TEVA PHARMACEUTICALS, Condo Roccia Koptiw LLP, and Morgan, Lewis & Bockius LLP.

Top cities in Pennsylvania

All practitioners in Pennsylvania

Rongxiang Liu Datan

Reg. 63157

Patent agent

Berwyn, PA · 19312

610-457-0156

Timothy W Davenport

Reg. 47515

Patent attorney

TEVA PHARMACEUTICALS

Frazer, PA · 19355

610-727-6228

Edward Babcock Davis

Reg. 77532

Patent attorney

Condo Roccia Koptiw LLP

Philadelphia, PA · 19103

267-817-7384

Kenneth J Davis

Reg. 50688

Patent attorney

Morgan, Lewis & Bockius LLP

Philadelphia, PA · 19103

215-963-5392

Daniel Leonard De Joseph

Reg. 28007

Patent attorney

FLSmidth Incorporated

Bethlehem, PA · 18017

610-264-6555

Sven De La Rosa

Reg. 84698

Patent agent

Flaster Greenberg P.C.

Philadelphia, PA · 19103

443-605-8934

Rick A De Pinho

Reg. 41703

Patent attorney

Agere Systems Inc.

Allentown, PA · 18109-9138

610-712-1363

Joseph R Decker

Reg. 80810

Patent agent

Faegre, Drinker, Biddle, and Reath

Philadelphia, PA · 19103

608-354-6190

Ingrid C Deckman

Reg. 70621

Patent agent

Johnson and Johnson

Spring House, PA · 19477-0776

215-628-7884

James DiGiacomo Dee

Reg. 31099

Patent attorney

Carpenter Technology Corporation

Reading, PA · 19601

610-208-3423

Manya S Deehr

Reg. 37120

Patent attorney

Life Sciences Law Group

Newton, PA · 18940

215-944-8112

Daniel J. DeHelian

Reg. 80084

Patent agent

Riverside Law LLP

Wayne, PA · 19087

215-801-1250

Thomas S Deibert

Reg. 40984

Patent attorney

The Dow Chemical Company

Collegville, PA · 19426

610-244-6516

Gerald Edward Deitch

Reg. 30457

Patent agent

Wynnewood, PA · 19096

610-649-1055

Thomas W Dekleva

Reg. 55104

Patent agent

Baker Hostetler LLP

Philadelphia, PA · 19104

212-568-3100

Alexandra A DeLaney

Reg. 79321

Patent agent

Philadelphia, PA · 19104

760-672-4723

Adam Charles deLisle

Reg. 901265

Limited recognition

University of Pennsylvania Law School

Philadelphia, PA · 19106

610-608-1733

Mark DeLuca

Reg. 33229

Patent attorney

Law Offices of Mark DeLuca LLC

Chadds Ford, PA · 19317

484-620-2090

David M DeMay

Reg. 52807

Patent attorney

DeMay Consulting

Bethel Park, PA · 15102

412-327-4658

Alexander A. DeNardo

Reg. 82972

Patent attorney

Plymouth Meeting, PA · 19462

610-633-0584

Jill Denesvich

Reg. 52810

Patent agent

LANXESS Corporation

Pittsburgh, PA · 15275

412-809-2232

Emily A Denisco

Reg. 83993

Patent agent

Volpe Koenig

Philadelphia, PA · 19103

215-255-9259

Adam M. Denmead

Reg. 73303

Patent agent

Carnegie, PA · 15106

724-579-4934

Louis Anthony DePaul

Reg. 28407

Patent attorney

Greensburg, PA · 15601

724-834-6773

Amanda Leckman DePaulis

Reg. 77439

Patent agent

DePaulis Law LLC

White Oak, PA · 15131

412-855-8269

Jeffrey E Depp

Reg. 74053

Patent attorney

University of Pittsburgh

Pittsburgh, PA · 15260

412-648-0078

Saval K Desai

Reg. 77646

Patent attorney

Caesar Rivise, PC

Philadelphia, PA · 19103

215-567-2010

John M. Desper

Reg. 76209

Patent agent

Eckert Seamans Cherin & Mellott, LLC

Philadelphia, PA · 19102

215-851-8527

Alexander Detschelt

Reg. 50261

Patent attorney

North Huntingdon, PA · 15642

412-805-2539

Anita Seth Devaul

Reg. 53697

Patent agent

Kennametal, Inc.

Latrobe, PA · 15650

419-283-3648

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.