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 Flaster Greenberg PC, Eckert Seamans Cherin & Mellott, LLC, and RatnerPrestia.

Top cities in Pennsylvania

All practitioners in Pennsylvania

Robert E. Gordon

Reg. 70132

Patent attorney

Flaster Greenberg PC

Philadelphia, PA · 19103

215-279-9392

Gregory J Gore

Reg. 30057

Patent attorney

Doylestown, PA · 18901

215-348-1442

James G Gorman· III

Reg. 74161

Patent agent

Philadelphia, PA · 19107

267-443-4139

David B Gornish

Reg. 57513

Patent attorney

Eckert Seamans Cherin & Mellott, LLC

Philadelphia, PA · 19102

215-851-8469

Sylvia A Gosztonyi

Reg. 23071

Patent attorney

Landenberg, PA · 19350

610-274-0281

James M Gould

Reg. 33702

Patent attorney

RatnerPrestia

King of Prussia, PA · 19406

610-407-0700

Lewis F Gould· Jr

Reg. 25057

Patent attorney

Duane Morris LLP

Philadelphia, PA · 19103-4196

215-979-1282

Keith D Gourley

Reg. 32988

Patent attorney

Bethlehem, PA · 18018

610-865-9321

Kenneth P Gournic

Reg. 34340

Patent agent

U.S. Postal Inspection Service

Pittsburgh, PA · 15277

412-490-6426

Gayle G Gowen

Reg. 73698

Patent attorney

Morgan, Lewis & Bockius, LLP

Philadelphia, PA · 19103

215-963-5435

William H Gowen

Reg. 35524

Patent attorney

The Pennsylvania State University

University Park, PA · 16802-7000

814-865-6277

Richard A. Graham· Jr.

Reg. 76216

Patent attorney

Jones Day

Pittsburgh, PA · 15219

412-394-7240

Stephen Ross Green

Reg. 27789

Patent attorney

Mars, PA · 16046

724-612-8007

Jacob Paske Greenberg

Reg. 75411

Patent attorney

Carnegie Mellon University Center for

Pittsburgh, PA · 15213

412-268-6733

Alan J Greenberger

Reg. 67050

Patent agent

Allentown, PA · 18104

610-398-2445

Adam J. Greenspan

Reg. 61741

Patent agent

Philadelphia, PA · 19103

215-405-0125

Matthew F. Greinert

Reg. 57169

Patent attorney

Pittsburgh, PA · 15228

412-295-3176

Michael J Grese

Reg. 71295

Patent attorney

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

Joseph J Gribbin

Reg. 70936

Patent attorney

Dechert LLP

Philadelphia, PA · 19104

215-994-4000

Gail H Griffin

Reg. 51941

Patent attorney

FMC Corporation

Philadelphia, PA · 19104

215-299-6503

Anthony Grillo

Reg. 36535

Patent agent

Pragmatus LLC

Wayne, PA · 19087

484-683-5179

Sara E Grimaldi

Reg. 68154

Patent attorney

Media, PA · 19063

315-521-2450

Gregory Aaron Grissett

Reg. 59910

Patent attorney

Offit Kurman

Plymouth Meeting, PA · 19462

484-531-1713

John H Grondwalski

Reg. 35168

Patent attorney

Tarentum, PA · 15084

724-224-1068

Danielle N Gross

Reg. 74555

Patent agent

Volpe and Koenig, P.C.

Philadelphia, PA · 19103

215-255-9233

Felicity Elisabeth Groth

Reg. 47042

Patent attorney

Baker & Hostetler LLP

Philadelphia, PA · 19103-7501

215-568-3100

Deborah M. Grove

Reg. 61091

Patent agent

DLA Piper LLP

Philadelphia, PA · 19103

215-656-3318

Maurice E Grudza

Reg. 51757

Patent attorney

Langhorne, PA · 19047

215-702-7309

Yuri A Gruzdkov

Reg. 50762

Patent attorney

Mendelsohn Dunleavy, P.C.

Philadelphia, PA · 19102

215-557-8544

Karen J Guerrero

Reg. 37071

Patent agent

Phoenixville, PA · 19460

610-933-2490

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.