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 Betty A. Ryberg LLC, Ryder, Lu, Mazzeo & Konieczny LLC, and Ballard Spahr, LLP.

Top cities in Pennsylvania

All practitioners in Pennsylvania

Betty Ann Ryberg

Reg. 42119

Patent attorney

Betty A. Ryberg LLC

Chester Springs, PA · 19425

484-401-1725

Douglas J Ryder

Reg. 43073

Patent attorney

Ryder, Lu, Mazzeo & Konieczny LLC

Colmar, PA · 18915

215-997-0248

Kirsten R Rydstrom

Reg. 38603

Patent attorney

Pittsburgh, PA · 15222

412-288-7284

Lynn E Rzonca

Reg. 35998

Patent attorney

Ballard Spahr, LLP

Philadelphia, PA · 19103

215-864-8109

Michael C Sabino

Reg. 77051

Patent agent

Dentsply Sirona, Inc.

York, PA · 17401

717-849-4329

Alissa L. Saenz

Reg. 61750

Patent attorney

The Law Office of Alissa L. Saenz LLC

Phoenixville, PA · 19460

267-307-8166

Gangadharan B Sajithlal

Reg. 71545

Patent agent

Pittsburgh, PA · 15218

412-728-4073

Andrew Louis Salvatore

Reg. 45067

Patent attorney

West Chester, PA · 19380

484-947-2869

Michael A Salvitti

Reg. 80824

Patent agent

Moon Township, PA · 15108

404-840-4033

Steven B Samuels

Reg. 37711

Patent attorney

Baker & Hostetler LLP

Philadelphia, PA · 19104

215-564-0564

Ian K Samways

Reg. 36664

Patent agent

K&L Gates LLP

Pittsburgh, PA · 15222-2613

412-355-3732

Kristina I Sanchez

Reg. 76284

Patent agent

Mendelsohn Dunleavy, P.C.

Philadelphia, PA · 19102

215-557-6656

Mari J. Sanchez

Reg. 73942

Patent agent

Keisen Associates

Philadelphia, PA · 19103

215-701-6349

Joshua C. Sanders

Reg. 62439

Patent attorney

GlaxoSmithKline

King of Prussia, PA · 19406-1539

610-270-4853

Weevarach Sangkhapaithoon

Reg. 903281

Limited recognition

Penn State Law, The Pennsylvania State University

University Park, PA · 16802

815-641-2452

Carmen Samuel Santa Maria

Reg. 33453

Patent attorney

McNees Wallace and Nurick LLC

Harrisburg, PA · 17108

717-237-5226

Pierre E Santerre Queiroz de Oliveira

Reg. 68827

Patent attorney

Pepper Hamilton LLP

Pittsburgh, PA · 15219-2502

412-454-5878

Lois A Santopietro

Reg. 36264

Patent agent

West Chester, PA · 19382

610-399-1527

Leigha R. Santoro

Reg. 79805

Patent attorney

K & G Law LLC

Ambler, PA · 19002

267-419-8346

Joyce H. Sanyour

Reg. 67401

Patent attorney

West Chester, PA · 19382

610-430-6819

Audrey Leigh Sargente

Reg. 903143

Limited recognition

University of Pennsylvania Law School

Philadelphia, PA · 19106

917-971-5482

Donald M Satina

Reg. 31875

Patent attorney

Pittsburgh, PA · 15241

412-331-2670

Loretta Jean Sauermelch

Reg. 37347

Patent attorney

Glaxo Smith Kline

Collegeville, PA · 19426

215-859-8303

Martin Fred Savitzky

Reg. 29699

Patent attorney

Law Office of Martin Savitzky, Esq.

Maple Glen, PA · 19002

215-659-6687

Jayne Marie Saydah

Reg. 48796

Patent attorney

Jayne Saydah, Esq., LLC

Doylestown, PA · 18901

610-256-9985

Eric J Schaal

Reg. 62595

Patent attorney

Air Products and Chemicals, Inc.

Allentown, PA · 18195-1501

610-481-1217

Andrew Lee Schaeffer

Reg. 33605

Patent attorney

Ballard Spahr LLP

Philadelphia, PA · 19103-7599

215-864-8884

Celine B. Schalk-Hihi

Reg. 78787

Patent agent

Janssen R&D

Spring House, PA · 19477

215-628-7875

Colleen M. Schaller

Reg. 67751

Patent attorney

Howson & Howson LLP

Blue Bell, PA · 19422

215-540-9200

Stuart A. Schanbacher

Reg. 61895

Patent attorney

Condo Roccia LLP

Philadelphia, PA · 19103

215-558-5740

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.