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 Saul Ewing Arnstein & Lehr LLP, NOVA Chemicals, and Akin Gump Strauss & Feld, LLC.

Top cities in Pennsylvania

All practitioners in Pennsylvania

Geoffrey P Shipsides

Reg. 55617

Patent attorney

NOVA Chemicals

Moon Township, PA · 15108

612-525-2537

David Todd Shoneman

Reg. 39371

Patent attorney

Yardley, PA · 19067

609-933-1236

Christopher P. Shoup

Reg. 75206

Patent attorney

Erie, PA · 16506

814-464-5339

Robert Lawrence Siegel

Reg. 32717

Patent agent

Kennett Square, PA · 19348

610-347-1874

Anthony D. Sierra

Reg. 78688

Patent attorney

Akin Gump Strauss & Feld, LLC

Philadelphia, PA · 19103-7013

215-965-1384

Pearl T L Siew

Reg. 54448

Patent attorney

King of Prussia, PA · 19406

917-349-2042

Domingos J Silva

Reg. 64197

Patent attorney

Saul Ewing Arnstein & Lehr LLP

Philadelphia, PA · 19102-2186

215-972-1089

Robert S Silver

Reg. 35681

Patent attorney

Langer, Grogan and Diver, P.C.

Philadelphia, PA · 19103

215-320-5660

Arnold Barry Silverman

Reg. 22614

Patent attorney

Eckert Seamans Cherin and Mellott

Pittsburgh, PA · 15219

412-566-2077

John F. Silvester

Reg. 82015

Patent attorney

Philadelphia, PA · 19103

215-279-9913

Andrew Charles Siminerio

Reg. 30803

Patent attorney

PPG Industries, Inc.

Pittsburgh, PA · 15272

412-434-4645

John Joseph Simkanich

Reg. 26036

Patent attorney

Newtown, PA · 18940-1147

215-840-1460

Benjamin N Simler

Reg. 80554

Patent attorney

Ballard Spahr LLP

Philadelphia, PA · 19103-7599

215-864-8872

David A Simmons

Reg. 53931

Patent agent

Newville, PA · 17241

717-713-1145

James Charles Simmons

Reg. 24842

Patent attorney

Design IP, P.C.

Allentown, PA · 18104

610-395-4900 EXT. 113

William J. Simmons

Reg. 59887

Patent attorney

Johnson & Johnson Law Department

Spring House, PA · 19477

215-628-5512

Mark Douglas Simpson

Reg. 32942

Patent attorney

Saul Ewing Arnstein & Lehr LLP

Philadelphia, PA · 19102-2186

215-972-7880

Cassius K Sims

Reg. 65822

Patent attorney

Comcast

Philadelphia, PA · 19103

215-286-6786

Sara E Sims

Reg. 75470

Patent agent

Morgan, Lewis & Bockius LLP

Philadelphia, PA · 19103

215-963-5630

James M Singer

Reg. 45111

Patent attorney

Fox Rothschild LLP

Pittsburgh, PA · 15222

412-391-2486

Pallab Singh

Reg. 70731

Patent agent

Riverside Law LLP

West Conshohockon, PA · 19428

215-268-3888

Kenneth R Singleton

Reg. 61520

Patent agent

Johnson & Johnson

Exton, PA · 19341

610-458-5264 EXT. 6511

Alpa V Sinha

Reg. 58196

Patent attorney

B.Braun Medical Inc.

Bethlehem, PA · 18018

610-997-4588

Edward Joseph Sites

Reg. 22754

Patent attorney

Yardley, PA · 19067

215-493-8526

Henry Howson Skillman

Reg. 17352

Patent attorney

Dann Dorfman Herrell and Skillman

Philadelphia, PA · 19103-2307

215-563-4100

Alexas D Skucas

Reg. 42155

Patent attorney

Newtown Square, PA · 19073

732-768-6462

Wendy M Slade

Reg. 53604

Patent agent

Dowell & Dowell, P.C.

NORRISTOWN, PA · 19403

484-232-8227

Joshua R Slavitt

Reg. 40816

Patent attorney

Slavitt IP Law, LLC

MERION STATION, PA · 19066

215-880-2569

Eric J Slifer

Reg. 62597

Patent attorney

West Chester, PA · 19380

484-354-0820

Jenifer Constance Slinskey

Reg. 46064

Patent attorney

Thorp Reed and Armstrong, LLP

Pittsburgh, PA · 15219

412-394-2360

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.