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, Clarke Innovations, LLC, and Tieff I.P. Law P.C..

Top cities in Pennsylvania

All practitioners in Pennsylvania

Cameron P Thornton

Reg. 78185

Patent agent

K&L Gates LLP

Pittsburgh, PA · 15222

412-355-8334

Yvette C Thornton

Reg. 57812

Patent agent

Clarke Innovations, LLC

Havertown, PA · 19083

215-614-3492

Michael W Tieff

Reg. 57845

Patent attorney

Tieff I.P. Law P.C.

Philadelphia, PA · 19147

215-300-8065

Nicholas M Tinari· Jr.

Reg. 58200

Patent attorney

Caesar Rivise, PC

Philiadelphia, PA · 19103

215-567-2010

Richard T. Ting

Reg. 60284

Patent attorney

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

Garrett J. Tobin

Reg. 77494

Patent attorney

K&L Gates LLP

Pittsburgh, PA · 15222

412-355-8254

Marla L Tocker

Reg. 54493

Patent attorney

Kennett Square, PA · 19348

610-444-4633

Saki Tohyama

Reg. 77399

Patent agent

Armstrong Teasdale LLP

Philadelphia, PA · 19103

267-780-2023

Frederick L Tolhurst

Reg. 28123

Patent attorney

Cohen & Grigsby PC

Pittsburgh, PA · 15222-3152

412-297-4900

Margaret M Tomaska

Reg. 65938

Patent attorney

Woodcock Washburn, LLP

Philadelphia, PA · 19104

215-568-3100

Melvin J Tomlinson· IV

Reg. 83522

Patent agent

Paoli, PA · 19301

610-608-8379

Gary P Topolosky

Reg. 31888

Patent attorney

Pittsburgh, PA · 15227-3419

412-848-6457

Robert J Toth

Reg. 57741

Patent attorney

Allegheny Technologies Incorporated

Pittsburgh, PA · 15222

412-394-3039

Alan G Towner

Reg. 32949

Patent attorney

Pietragallo Gordon Alfano Bosick & Raspanti, LLP

Pittsburgh, PA · 15219

412-263-4340

Allison Rebecca Tramontana

Reg. 77515

Patent attorney

Caesar Rivise, P.C.

Fort Washington, PA · 19034

215-567-2010

Edward A Trauffer

Reg. 38636

Patent agent

Rydal, PA · 19046

215-353-6386

Christine W Trebilcock

Reg. 41373

Patent attorney

PPG Industries, Inc.

Pittsburgh, PA · 15272

141-243-43793

Gerald F Tremblay

Reg. 39402

Patent attorney

Lansdale, PA · 19446

401-378-0924

Thomas Richard Trempus

Reg. 29708

Patent attorney

Pittsburgh, PA · 15243

412-445-4855

Joseph S Tripoli

Reg. 26040

Patent attorney

Yardley, PA · 19067

215-493-8423

Doreen Y Trujillo

Reg. 35719

Patent attorney

VLP Law Group, LLP

Blue Bell, PA · 19422

267-358-6839

Suneeta Tumati

Reg. 70084

Patent agent

Chadds Ford, PA · 19317

520-309-0943

Alexander S. Tumminelli

Reg. 65181

Patent agent

New Hope, PA · 18938

609-306-4266

Maria P Tungol

Reg. 31720

Patent attorney

Maria P. Tungol

Merion, PA · 19066

610-617-9197

Doyle S Tuvesson

Reg. 81677

Patent attorney

West Chester, PA · 19382

215-620-5970

Cynthia G Tymeson

Reg. 34745

Patent attorney

Siemens Medical Solutions USA, Inc.

Malvern, PA · 19355-9998

610-448-6519

Theodore Tysak

Reg. 60487

Patent agent

Rohm and Haas Company

Spring House, PA · 19477

215-619-5580

James G Uber

Reg. 30600

Patent attorney

Pittsburgh, PA · 15215

412-782-2710

William J Uhl

Reg. 25567

Patent agent

Murrysville, PA · 15668

412-496-3430

Jonathan J Underwood

Reg. 77495

Patent attorney

Springfield, PA · 19064

813-523-8268

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.