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 CNH Industrial America LLC, Comcast Cable Communications, LLC, and Law Offices of Alexander J. Marek.

Top cities in Pennsylvania

All practitioners in Pennsylvania

Joseph A Marcano Estevez

Reg. 80574

Patent attorney

CNH Industrial America LLC

New Holland, PA · 17557

787-662-7729

David L Marcus

Reg. 46897

Patent attorney

Comcast Cable Communications, LLC

Philadelphia, PA · 19103-2838

215-286-5069

Alexander J Marek

Reg. 72697

Patent attorney

Law Offices of Alexander J. Marek

Brodheadsville, PA · 18322

717-495-2909

H Charles Markofski· Jr

Reg. 35599

Patent attorney

Markofski Law Offices

Gilbertsville, PA · 19525

610-367-4444

Robert P Marley

Reg. 32914

Patent attorney

Unisys Corporation

Blue Bell, PA · 19422

215-986-5462

Carol A. Marmo

Reg. 39761

Patent attorney

Eckert Seamans Cherin and Mellott, LLC

Pittsburgh, PA · 15219

412-566-1933

John-Paul R. Marrazzo

Reg. 83186

Patent agent

Mechanicsburg, PA · 17050

717-884-3933

John J Marshall

Reg. 29671

Patent attorney

Avondale, PA · 19311

484-720-8260

Erik W. Martin

Reg. 82761

Patent agent

Pittsburgh, PA · 15203

410-387-9948

John C Martin· Jr

Reg. 24063

Patent attorney

Malvern, PA · 19355

610-296-5638

Justin P. Martinchek

Reg. 66211

Patent attorney

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

Corine Martineau

Reg. 81982

Patent agent

Morgan, Lewis & Bockius

Philadelphia, PA · 19103

215-963-5030

Daniel Marut

Reg. 62580

Patent attorney

Philadelphia, PA · 19146

267-257-4687

Neil C Maskeri

Reg. 61591

Patent attorney

Young Basile Hanlon & MacFarlane, P.C.

Philadelphia, PA · 19103

248-687-5775

Steven Duane Maslowski

Reg. 46905

Patent attorney

Akin Gump Strauss Hauer & Feld LLP

Philadelphia, PA · 19103-7103

215-965-1259

Glenn M Massina

Reg. 40081

Patent attorney

Massina Patent & Trademark Law PLLC

Perkasie, PA · 18944

215-799-4182

Howard G Massung

Reg. 26566

Patent attorney

Coraopolis, PA · 15108-1540

412-262-9199

Joseph P. Mathew

Reg. 76599

Patent attorney

Volpe and Koenig, P.C.

Philadelphia, PA · 19103

610-209-9503

Peter K Matson

Reg. 55434

Patent attorney

Havertown, PA · 19083

610-789-7541

Gary F Matz

Reg. 45504

Patent agent

NOVA Chemicals Inc.

Moon Township, PA · 15108

412-490-4794

Kelly G. Matz

Reg. 67940

Patent agent

Ardmore, PA · 19003

856-261-9716

Davidson L. Mayer

Reg. 83804

Patent agent

Millersburg, PA · 17061

717-372-9727

Jared A Mayes

Reg. 51292

Patent agent

Glenside, PA · 19038

215-436-9850

Todd Lewis Mayover

Reg. 53289

Patent attorney

Blue Bell, PA · 19422

609-760-8643

Ralph S Mazer

Reg. 54703

Patent attorney

Newtown, PA · 18940

215-489-5022

Gillian E. Mazurek

Reg. 84144

Patent agent

Delmont, PA · 15626

724-610-0608

Mark A. Mazza

Reg. 76673

Patent attorney

Eckert Seamans Cherin & Mellott, LLC

Pittsburgh, PA · 15219

412-566-6058

Frank A Mazzeo

Reg. 46259

Patent attorney

Ryder, Lu, Mazzeo & Koniecnzy LLC

Colmar, PA · 18915

215-997-0248

Thomas P McBride

Reg. 32706

Patent attorney

Wyncote, PA · 19095

314-378-6230

Amy Elizabeth McCall

Reg. 52009

Patent attorney

Strassburger McKenna Gutnick & Gefsky

Pittsburgh, PA · 15222

412-391-2727

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.