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 Volpe and Koenig, PC, Gates, Halbruner & Hatch, P.C., and Knox McLaughlin Gornall & Sennett, P.C..

Top cities in Pennsylvania

All practitioners in Pennsylvania

Clifton R Guise

Reg. 55230

Patent attorney

Gates, Halbruner & Hatch, P.C.

Lemoyne, PA · 17043

717-731-9600

Joseph F Gula· III

Reg. 47618

Patent attorney

Knox McLaughlin Gornall & Sennett, P.C.

Erie, PA · 16501

814-459-2800

Jarrad M Gunther

Reg. 63903

Patent attorney

Duane Morris LLP

Philadelphia, PA · 19103

215-979-1837

Hailan Guo

Reg. 46153

Patent agent

Rohm and Haas Company

Spring House, PA · 19477

215-641-7256

Damon Gupta

Reg. 77631

Patent attorney

Spark Therapeutics

Philadelphia, PA · 19104

267-817-2653

Joseph P Gushue

Reg. 59819

Patent attorney

Volpe and Koenig, PC

Philadelphia, PA · 19103

215-570-3300

David S Guttman

Reg. 27479

Patent attorney

Guttman Patent Office

Philadelphia, PA · 19103-3025

215-995-5109

David Guzo

Reg. 67417

Patent agent

Dallas, PA · 18612

570-639-5030

Dennis L Haas· Jr.

Reg. 65315

Patent attorney

RIVERSIDE LAW LLP

West Conshohocken, PA · 19428

215-268-3888

Michael W Haas

Reg. 35174

Patent attorney

Philips Intellectual Property & Standards

Murrysville, PA · 15668

724-387-5026

Jeffrey S Habib

Reg. 42615

Patent attorney

Hooker & Habib, PC

Camp Hill, PA · 17011

717-232-8771

Selene A Haedi

Reg. 69592

Patent attorney

CNH Industrial America LLC

New Holland, PA · 17557

815-709-8828

Patrick J Hagan

Reg. 27643

Patent attorney

Dann, Dorfman, Herrell and Skillman PC

Philadelphia, PA · 19103-2307

215-563-4100

Michael J. Haggerson

Reg. 71037

Patent attorney

DLA Piper LLP

Philadelphia, PA · 19103

215-656-2467

Douglas M. Hall

Reg. 71465

Patent attorney

Pietragallo Gordon Alfano Bosick & Raspanti, LLP

Pittsburgh, PA · 15219

412-263-2000

Jonathan D. Hall

Reg. 67130

Patent attorney

Oak Law, PLLC

Pipersville, PA · 18947

703-966-0121

Linda E Hall

Reg. 31763

Patent attorney

Glaxo Smith Kline

King Of Prussia, PA · 19406

610-270-5016

Christopher Ian Halliday

Reg. 42621

Patent attorney

Morgan, Lewis & Bockius LLP

Philadelphia, PA · 19103

215-963-5337

Patrick J Halloran

Reg. 41053

Patent agent

Center Valley, PA · 18034

610-984-4751

Gerald B Halt· Jr

Reg. 37633

Patent attorney

Volpe and Koenig, PC

Philadelphia, PA · 19103

215-568-6400

Jane Obee Hamby

Reg. 32872

Patent attorney

Glen Mills, PA · 19342

610-361-0510

William H Hamby

Reg. 31521

Patent attorney

Glen Mills, PA · 19342

610-361-0510

Mohammad Hameed

Reg. 84162

Patent attorney

Condo Roccia Koptiw LLP

Philadelphia, PA · 19103-7412

215-558-5740

Kevin R Hamel

Reg. 36544

Patent attorney

SAP AG

Newtown Square, PA · 19073

610-661-8627

Shawn A Hamidinia

Reg. 58931

Patent attorney

Johnson & Johnson

Spring House, PA · 19477

614-203-0961

Brian J Hamilla

Reg. 38482

Patent attorney

Arconic

Pittsburgh, PA · 15212

412-992-2512

Charles J Han

Reg. 65918

Patent attorney

Philadelphia, PA · 19111

347-414-1218

Kathryn Mary Hanak

Reg. 76422

Patent attorney

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

J Mark Hand

Reg. 36545

Patent attorney

Fox Rothschild, LLP

Blue Bell, PA · 19422

610-397-7983

Ronald Lambert Haner

Reg. 66318

Patent agent

Erie, PA · 16505

650-380-6389

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.