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 Baker & Hostetler LLP, Armstrong Teasdale LLP, and Siemens Medical Solutions USA, Inc..

Top cities in Pennsylvania

All practitioners in Pennsylvania

Matthew A Kelly· III

Reg. 47702

Patent attorney

Philadelphia, PA · 19154

215-805-2623

Patricia L Kelly

Reg. 39247

Patent attorney

Exton, PA · 19341

610-416-8377

Patrick John Kelly

Reg. 34638

Patent attorney

Armstrong Teasdale LLP

Philadelphia, PA · 19103

267-780-2000

Peter L Kendall

Reg. 46246

Patent attorney

Siemens Medical Solutions USA, Inc.

Malvern, PA · 19355-9998

610-850-4218

Joseph L Kent

Reg. 54216

Patent attorney

Bayer Medical Care, Inc.

Indianola, PA · 15051

412-406-3243

Zoltan Kerekes

Reg. 38938

Patent attorney

Phoenix IP Ventures

Philadelphia, PA · 19103

267-765-3222

Ronald C Kern· Jr.

Reg. 71482

Patent attorney

Baker & Hostetler LLP

Philadelphia, PA · 19103

215-564-1669

Dawn C. Kerner

Reg. 67743

Patent agent

Volpe and Koenig, P.C.

Philadelphia, PA · 19103-4009

215-568-6400

Amanda M Kessel

Reg. 51872

Patent attorney

DePuy Synthes Products, LLC (companies of Johnson & Johnson)

Weat Chester, PA · 19380

610-719-5560

Jeffrey Maurice Ketchum

Reg. 31174

Patent agent

Jeffrey M Ketchum, Registered Patent Agent

Landenburg, PA · 19350-1333

301-537-7236

Rebecca A Kielar

Reg. 903140

Limited recognition

University of Pennsylvania Law School

Philadelphia, PA · 19106

781-698-9778

Anne Bernadette Kiernan

Reg. 36566

Patent attorney

Orefield, PA · 18069

484-358-0457

Suzanne Kikel

Reg. 28230

Patent agent

Wexford, PA · 15090

724-934-0644

Kyung Hee Kim

Reg. 69183

Patent agent

IP Legal Services, LLC

Paoli, PA · 19301

610-640-9350

Sanghoon Kim

Reg. 74056

Patent agent

Chadds Ford, PA · 19317

202-500-1771

Thomas S Kim

Reg. 51009

Patent attorney

Pathway Consulting Group Ltd

Lansdale, PA · 19446

215-400-0133

Edward J King

Reg. 64395

Patent attorney

Baker & Hostetler LLP

Philadelphia, PA · 19107-2891

215-568-3100

J Darwin King· Jr.

Reg. 76347

Patent attorney

Ference & Associates

Pittsburgh, PA · 15143

412-741-8400

Jonathan R King

Reg. 65967

Patent attorney

Blank Rome LLP

Philadelphia, PA · 19103

215-569-5432

Charles Michael Kinzig

Reg. 33252

Patent attorney

Glaxo Smith Kline

King Of Prussia, PA · 19046-0939

610-270-5021

Suzanne Miller Kirby

Reg. 32279

Patent attorney

Woodcock Washburn LLP

Philadelphia, PA · 19104-2981

215-568-3100

Beth A. Kirkpatrick

Reg. 68337

Patent attorney

Obermayer Rebmann Maxwell & HIppel LLP

Pittsburgh, PA · 15219

412-288-2474

Richard S Kitei

Reg. 63102

Patent agent

Allentown, PA · 18104

610-217-2727

Coraleine J. Kitt

Reg. 72778

Patent attorney

Flaster Greenberg, PC

Philadelphia, PA · 19103

215-587-5618

John M. Klaczany

Reg. 81707

Patent agent

Norristown, PA · 19403

610-755-2427

Bryce G Kleeman

Reg. 80916

Patent attorney

Howson & Howson LLP

Blue Bell, PA · 19422

215-540-9200

Todd E Klein

Reg. 59610

Patent attorney

The Belles Group, P.C.

Philadelphia, PA · 19146

215-735-9302

Bruce Howard Kleinstein

Reg. 28728

Patent attorney

Information Ventures Inc.

Philadelphia, PA · 19102-2100

215-569-2300

Glenn Edward Klepac

Reg. 26474

Patent attorney

Pittsburgh, PA · 15217-2586

412-804-8252

Paul W Kletzly

Reg. 53919

Patent attorney

Crown Castle

Canonsburg, PA · 15317

724-416-9083

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.