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 The Webb Law Firm, Young Basile Hanlon & MacFarlane, P.C., and Flaster Greenberg PC.

Top cities in Pennsylvania

All practitioners in Pennsylvania

Adam D Kline

Reg. 62152

Patent attorney

Young Basile Hanlon & MacFarlane, P.C.

Philadelphia, PA · 19103

248-244-0160

Joseph R Klinicki

Reg. 68505

Patent attorney

Flaster Greenberg PC

Conshohocken, PA · 19428

215-587-5687

Mark G Knedeisen

Reg. 42747

Patent attorney

K&L Gates LLP

Pittsburgh, PA · 15222-2613

412-355-6342

Raymond V Knobbs

Reg. 47712

Patent attorney

Minnotte Corporations

Pittsburgh, PA · 15220

412-920-1549

Wendy W Koba

Reg. 30509

Patent attorney

Springtown, PA · 18081

610-346-7112

Nicholas R. Kocent

Reg. 81652

Patent attorney

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

Cathy A Kodroff

Reg. 33980

Patent attorney

Howson and Howson LLP

Blue Bell, PA · 19422

215-540-9200

C Frederick Koenig· III

Reg. 29662

Patent attorney

Volpe and Koenig PC

Philadelphia, PA · 19103

215-568-6400

Joshua M. Koenig

Reg. 77071

Patent agent

Volpe & Koenig, PC

Philadelphia, PA · 19103

215-568-6400

Steven Eric Koffs

Reg. 37163

Patent attorney

Duane Morris LLP

Philadelphia, PA · 19103

215-979-1250

Nicanor A. Kohncke

Reg. 57348

Patent attorney

LANXESS Corporation

Pittsburgh, PA · 15275

412-809-2234

Nicholas C Kokkinos

Reg. 76979

Patent attorney

DLA Piper LLP

PHILADELPHIA, PA · 19103-7348

215-656-3300

John J Kolano

Reg. 20603

Patent agent

Sewickley, PA · 15143

412-741-6190

James W Kollas

Reg. 45497

Patent attorney

Kollas and Kennedy

Camp Hill, PA · 17011

717-731-1600

Adam J Komorowski

Reg. 62575

Patent attorney

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

Joseph Michael Konieczny· Sr.

Reg. 35806

Patent attorney

Ryder, Lu, Mazzeo, Konieczny, LLC

Plymouth Meeting, PA · 19462

610-940-1962

Kristina Lynne Konstas

Reg. 37864

Patent attorney

Viatris Inc.

Canonsburg, PA · 15317

347-543-2625

Robert Arthur Koons· Jr

Reg. 32474

Patent attorney

Drinker Biddle & Reath LLP

Philadelphia, PA · 19103

215-988-3392

Andrew J Koopman

Reg. 65537

Patent attorney

Buchanan Ingersoll & Rooney

King of Prussia, PA · 19406

610-407-0700

Emma Rose Kopp

Reg. 903141

Limited recognition

University of Pennsylvania Law School

Philadelphia, PA · 19106

215-898-8427

Michael A Koptiw

Reg. 57900

Patent attorney

Condo Roccia LLP

Philadelphia, PA · 19103

215-558-5740

Alex E Korona

Reg. 73842

Patent attorney

Sigma Law Group LLC

Philadelphia, PA · 19102

445-447-5291

Charles E Kosinski

Reg. 39254

Patent agent

Philips Electronics North America Corporation

Murrysville, PA · 15668

724-387-3746

John C. Kouch· Jr.

Reg. 79632

Patent attorney

Raju LLP

Philadelphia, PA · 19102

267-925-0458

Won J Kouh

Reg. 42763

Patent attorney

Duane Morris, LLP

Philadelphia, PA · 19103-4196

215-979-1581

James J Kozuch

Reg. 39733

Patent attorney

Caesar Rivise, PC

Philadelphia, PA · 19103

215-567-2010

Laura E Krabill

Reg. 41913

Patent attorney

Ballard Spahr Andrews & Ingersoll, LLP

Philadelphia, PA · 19103-7599

215-864-8848

Christian P. Kralle

Reg. 67599

Patent agent

Newton Square, PA · 19073

610-329-4328

John A Kramer

Reg. 46302

Patent attorney

Wabtec Corporation

Erie, PA · 16531

203-216-0172

Seth A. Kramer

Reg. 67813

Patent attorney

Fox Rothschild, LLP

Philadelphia, PA · 19103

215-299-2704

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.