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 Penn State Law, The Pennsylvania State University, Meagher, Emanuel, Laks, Goldberg & Bovino, LLP, and LaMorte & Associates P.C..

Top cities in Pennsylvania

All practitioners in Pennsylvania

Joseph Jacob Laks

Reg. 27914

Patent attorney

Meagher, Emanuel, Laks, Goldberg & Bovino, LLP

Yardley, PA · 19067

215-493-0495

William Edgar Lambert· III

Reg. 25429

Patent attorney

Philadelphia, PA · 19128-4121

215-483-8410

Eric A LaMorte

Reg. 34653

Patent attorney

LaMorte & Associates P.C.

Yardley, PA · 19067

215-321-6772

William F Lang· IV

Reg. 41928

Patent attorney

Lang Patent Law LLC

Beaver, PA · 15009

724-709-8765

Eric A. Langberg

Reg. 60638

Patent agent

Bluestone Technical, LLC

Milford, PA · 18337

570-972-1166

Keith R Lange

Reg. 44201

Patent attorney

Lange IP Law

Lincoln University, PA · 19352

610-869-6302

Jennifer E Langenberger

Reg. 52446

Patent agent

The University of Pennsylvania

Philadelphia, PA · 19104

215-573-4508

Jon S Larson

Reg. 66723

Patent attorney

Pittsburgh, PA · 15201

412-475-9575

Dominika N. Lastovickova Teator

Reg. 83444

Patent agent

Riverside Law LLP

Wayne, PA · 19087

610-232-7554

Richard David Laumann

Reg. 26758

Patent attorney

Emmans, PA · 18049

610-965-8175

Gregory Joseph Lavorgna

Reg. 30469

Patent attorney

Havertown, PA · 19083

610-853-3117

Charles P Lawton

Reg. 32911

Patent attorney

Washington, PA · 15301

724-223-4595

Isabella Sofia Layman Del Rivero

Reg. 902498

Limited recognition

Penn State Law, The Pennsylvania State University

University Park, PA · 16802

512-774-8233

Jay L Lazar

Reg. 37541

Patent attorney

Bethlehem, PA · 18017

610-694-2558

Michael D Lazzara

Reg. 41142

Patent attorney

Leech Tishman Fuscaldo & Lampl

Pittsburgh, PA · 15219

412-694-7289

Loc Huu Le

Reg. 902664

Limited recognition

Penn State Law, The Pennsylvania State University

University Park, PA · 16802

917-256-9292

Benjamin E Leace

Reg. 33412

Patent attorney

RatnerPrestia

King of Prussia, PA · 19406

610-407-0700

Justine M Leach

Reg. 58957

Patent attorney

Novocure

Malvern, PA · 19355

267-300-1558

Roland W. Leach

Reg. 81382

Patent agent

Clearfield, PA · 16830

215-939-0705

Pamela Lechleider

Reg. 68379

Patent agent

Woodcock Washburn LLP

Philadelphia, PA · 19104-2891

215-564-1509

Erik J. Lee

Reg. 77073

Patent attorney

Carnegie Mellon University: CTTEC

Pittsburgh, PA · 15213-3815

412-268-8393

Janet O Lee

Reg. 62076

Patent attorney

Jackson Lewis P.C

Philadelphia, PA · 19102

267-319-7829

Jason J Lee

Reg. 80601

Patent agent

Thermo Fisher Scientific

Pittsburgh, PA · 15275

412-249-6842

Joshua H Lee

Reg. 80843

Patent agent

Philadelphia, PA · 19103

215-582-0812

Seung Jae Lee

Reg. 81560

Patent agent

Morgan, Lewis and Bockius LLP

Philadelphia, PA · 19103-2921

215-963-4909

Paul K Legaard

Reg. 38534

Patent attorney

Armstrong Teasdale LLP

Philadelphia, PA · 19103

267-780-2005

Eileen A Lehmann

Reg. 39272

Patent attorney

Chester Heights, PA · 19017

650-799-4722

Paul A. Leicht

Reg. 71497

Patent agent

BakerHostetler

Philadelphia, PA · 19103-7501

215-564-1661

Michael J. Lembo

Reg. 76431

Patent agent

Certainteed Corporation

Malvern, PA · 19355

610-651-5821

Andrew Peyton Lemon

Reg. 903279

Limited recognition

Penn State Law, The Pennsylvania State University

University Park, PA · 16802

717-381-7424

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.