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 SAP America Inc., Buchanan Ingersoll & Rooney PC, and Precision Patent Group, LLC.

Top cities in Pennsylvania

All practitioners in Pennsylvania

John W Caldwell

Reg. 28937

Patent agent

Rose Valley, PA · 19086

610-565-1391

Mary M Calkins

Reg. 62061

Patent attorney

SAP America Inc.

Newtown Square, PA · 19073

443-739-5711

Jason P Camillo

Reg. 69615

Patent attorney

Buchanan Ingersoll & Rooney PC

Pittsburgh, PA · 15219

412-443-7769

Viantinna D Campana Bordas

Reg. 68751

Patent agent

Philadelphia, PA · 19148

787-379-5697

Christopher T Campbell

Reg. 74985

Patent agent

Precision Patent Group, LLC

West Grove, PA · 19390

417-300-5601

John E Campbell

Reg. 52687

Patent agent

John E Campbell

SPRINGFIELD, PA · 19064

845-489-4148

Mary R Campbell

Reg. 52689

Patent attorney

Philadelphia, PA · 19128

215-508-0863

Laura M. Camus

Reg. 67800

Patent attorney

Beck & Thomas, P.C.

Pittsburgh, PA · 15246

412-343-9700

Joseph S Cancilla

Reg. 73688

Patent attorney

PIttsburgh, PA · 15236

412-290-6576

Ann Marie Cannoni

Reg. 35972

Patent attorney

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

Robert E Cannuscio

Reg. 36469

Patent attorney

Faegre Drinker Biddle and Reath LLP

Philadelphia, PA · 19103

215-988-3303

Ping Cao

Reg. 62816

Patent attorney

West Chester, PA · 19380

610-724-8299

Ying Cao

Reg. 70893

Patent attorney

Eaton Corporation

Moon, PA · 15108

412-893-4038

Christopher W Capcara

Reg. 65630

Patent attorney

Babst Calland

Pittsburgh, PA · 15222

412-253-8862

James Erminio Capone

Reg. 81032

Patent agent

Gordon & Rees, LLP

Pittsburgh, PA · 15219

412-577-7400

Roberto Capriotti

Reg. 46599

Patent attorney

K&L Gates LLP

Pittsburgh, PA · 15222-2613

412-355-6423

Daniel R. Carcanague

Reg. 84641

Patent agent

Coopersburg, PA · 18036

508-308-7786

Anthony R. Carlis

Reg. 50126

Patent attorney

Law Office of Anthony Carlis

MALVERN, PA · 19355

484-630-0800

Joseph R Carnicella

Reg. 56317

Patent attorney

Westinghouse Electric Company

Cranberry Township, PA · 16066

412-374-5713

Floyd B Carothers

Reg. 24252

Patent attorney

Carothers and Carothers

Pittsburgh, PA · 15219

412-471-3575

Clark R Carpenter

Reg. 35092

Patent agent

IP Consulting

Ambler, PA · 19002-1823

215-913-5930

Ernest Andrew Carpenter

Reg. 25578

Patent attorney

Tippins INC

Pittsburgh, PA · 15223

412-782-7760

Amy E Carr-Trexler

Reg. 51531

Patent attorney

Air Products and Chemicals, Inc.

Allentown, PA · 18195

610-481-3425

Eduardo M Carreras

Reg. 28197

Patent attorney

Baker & Hostetler LLP

Philadeiphia, PA · 19104-2891

215-568-3100

Frank T Carroll

Reg. 42392

Patent attorney

Fox Rothschild LLP

Philadelphia, PA · 19103-3291

215-299-2000

Kevin M Carroll

Reg. 44596

Patent agent

Johnson Matthey, Inc.

Wayne, PA · 19087

610-971-3047

Thomas J Carroll· Jr.

Reg. 63683

Patent attorney

Moosic, PA · 18507

570-604-1328

Christine E Carty

Reg. 36099

Patent attorney

Lansdale, PA · 19446

215-855-1089

Kevin R Casey

Reg. 32117

Patent attorney

Stradley, Ronon, Stevens & Young, LLP

Malvern, PA · 19355-1481

610-640-5813

James D Cashel

Reg. 42394

Patent attorney

Environmental Tectonics Corporation

Southampton, PA · 18966

215-355-9100

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.