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 K&L Gates LLP, McKay and Associates, PC, and Johnson Matthey Inc..

Top cities in Pennsylvania

All practitioners in Pennsylvania

Terrell H McCasland

Reg. 65897

Patent attorney

Waverly Township, PA · 18411

303-885-5635

Shanay M McCastle

Reg. 69404

Patent attorney

Johnson Matthey Inc.

Wayne, PA · 19087

610-971-3121

Ronald J McCaully

Reg. 26304

Patent agent

Douglassville, PA · 19518-8812

484-332-6865

Douglas K McClaine

Reg. 32379

Patent attorney

Mine Safety Appliances Company

Cranberry Township, PA · 16066

724-741-8222

Shawn A McClintic

Reg. 45856

Patent attorney

Wabtec Corporation

Erie, PA · 16531

814-566-8981

Shawn L McClintock

Reg. 31980

Patent attorney

Shazian Consulting CORP

Doylestown, PA · 18901

215-489-0769

Evelyn H McConathy

Reg. 35279

Patent attorney

Montgomery, McCracken, Walker & Rhoads, LLP

Philadelphia, PA · 19109

215-772-7550

James C McConnon

Reg. 18030

Patent attorney

Paul & Paul

Philadelphia, PA · 19103

215-568-4900

William Patrick McCormick

Reg. 35607

Patent attorney

Triad Isotopes, Inc.

Bethel Park, PA · 15102

412-851-2030

Benjamin H. McCoy

Reg. 68735

Patent attorney

Fox Rothschild, LLP

Blue Bell, PA · 19422-3001

610-397-7972

Charles M McCuen

Reg. 28804

Patent attorney

Law Office of Charles M. McCuen

Selinsgrove, PA · 17870

571-374-0590

Sharon B McCullen

Reg. 54303

Patent attorney

Wayne, PA · 19087

215-378-6029

James Richard McDaniel

Reg. 34481

Patent attorney

Nazareth, PA · 18064

208-724-1838

Meghan R. McDermott

Reg. 83919

Patent agent

Collegeville, PA · 19426

484-844-2494

Paul J. McDonnell

Reg. 80351

Patent attorney

Reed Smith LLP

Pittsburgh, PA · 15222

716-430-9957

Bridget L McDonough

Reg. 64354

Patent agent

Lutron Electronics Co. Inc.

Coopersburg, PA · 18036

610-282-7478

Patrick J McElhinny

Reg. 46320

Patent attorney

K&L Gates LLP

Pittsburgh, PA · 15222-2613

412-355-6334

Przemyslaw P. McEwan

Reg. 79402

Patent agent

Goodwin Procter LLP

Philadelphia, PA · 19104

908-275-7414

James L McGinnis

Reg. 34387

Patent agent

James McGinnis

Philadelphia, PA · 19103

908-812-4203

Joseph T McGinnis

Reg. 84393

Patent attorney

Flaster Greenberg

Philadelphia, PA · 19103

215-279-9393

John E McGlynn

Reg. 42863

Patent attorney

Condo Roccia Koptiw LLP

Philadlephia, PA · 19103

215-568-3100

Barry F McGurl

Reg. 43340

Patent attorney

Arbutus Biopharma

Warminster, PA · 18974

267-469-0914

John W McIlvaine· III

Reg. 34219

Patent attorney

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

John M McIntyre

Reg. 45734

Patent attorney

Porter Wright

Pittsburgh, PA · 15222

412-235-1470

Donald J McKay

Reg. 45531

Patent attorney

McKay and Associates, PC

Pittsburgh, PA · 15226

412-344-6113

Kenneth Patrick McKay

Reg. 38550

Patent attorney

McKay and Associates, PC

Pittsburgh, PA · 15234

412-344-6113

Patrick Ryan McKnight

Reg. 82391

Patent agent

K&L Gates LLP

Pittsburgh, PA · 15222

412-355-3771

Thomas F McKnight

Reg. 29414

Patent attorney

Neville Chemical Company

Pittsburgh, PA · 15225

412-777-4204

Scott W McLellan

Reg. 30776

Patent attorney

Kempton, PA · 19529

610-349-6960

Savanah M. McLendon

Reg. 79403

Patent attorney

Altoona, PA · 16602

125-165-64780

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.