Pennsylvania

Patent attorneys in Pennsylvania

Pennsylvania hosts 1,907 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, Caesar Rivise, PC, and The Webb Law Firm.

Top cities in Pennsylvania

All practitioners in Pennsylvania

Daniel J. Tarr

Reg. 66595

Patent attorney

Morgan Lewis & Bockius LLP

Phladelphia, PA · 19103

215-963-4995

Paul A Taufer

Reg. 35703

Patent attorney

DLA Piper US LLP

Philadelphia, PA · 19103

215-656-3385

Joy E. Taylor

Reg. 69882

Patent attorney

Knox McLaughlin Gornall & Sennett, P.C.

Erie, PA · 16501

814-490-5220

Steven Z. Taylor

Reg. 78419

Patent agent

Riverside Law

Wayne, PA · 19087

215-268-3888

Frederick A Tecce

Reg. 32065

Patent attorney

Ice Miller LLP

Philadelphia, PA · 19103

215-377-5031

James J Tedjeske

Reg. 28797

Patent attorney

Kvaerner North American Construction Inc.

Canonsburg, PA · 15317

724-416-6843

Gretchen L Temeles

Reg. 57077

Patent agent

Duane Morris LLP

Philadelphia, PA · 19103-4196

215-979-1848

David M Tener

Reg. 37054

Patent attorney

Caesar Rivise, PC

Philadelphia, PA · 19103

215-567-2010

Frederic Tenney Tenney

Reg. 47131

Patent attorney

Howmet Aerospace Inc.

Pittsburgh, PA · 15212

412-553-2718

George B Tereschuk

Reg. 37558

Patent attorney

George B. Tereschuk, Esq.

Langhorne, PA · 19047

732-604-5609

Mark C Terrano

Reg. 40200

Patent attorney

Agere Systems Inc.

Allentown, PA · 18109

610-712-2127

Brienne S Terril

Reg. 60941

Patent attorney

BNY Mellon

Pittsburgh, PA · 15258

412-234-9523

Gillian W Thackray

Reg. 47988

Patent attorney

Phoenixville, PA · 19460

781-703-2498

Vivek S. Thakur

Reg. 76721

Patent agent

Ambler, PA · 19002

215-704-5576

Stephanie E Thatcher

Reg. 59333

Patent attorney

Somerset, PA · 15501

John C Thomas· III

Reg. 52282

Patent attorney

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

Sean M Thomas

Reg. 65937

Patent attorney

Malvern, PA · 19355

918-605-6257

Sheba E Thomas

Reg. 63227

Patent agent

Philadelphia, PA · 19115

267-872-1361

William R Thomas

Reg. 62500

Patent attorney

Hughes & Thomas LLC

Paoli, PA · 19301

484-515-6390

Rachelle H Thompson

Reg. 50860

Patent attorney

Carpenter Technology Corporation

Philadelphia, PA · 19103

610-208-2000

Samantha J Thompson

Reg. 80927

Patent agent

K&L Gates LLP

Pittsburgh, PA · 15222

412-355-6258

Richard K Thomson

Reg. 29032

Patent attorney

Fairview, PA · 16415

814-474-9016

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

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?

1,907 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.