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, Eckert Seamans, and Volpe and Koenig P.C..

Top cities in Pennsylvania

All practitioners in Pennsylvania

Grant E Coffield

Reg. 52758

Patent attorney

Eckert Seamans

Pittsburgh, PA · 15219

412-566-6965

John M. Cogill

Reg. 74211

Patent attorney

Volpe and Koenig P.C.

Philadelphia, PA · 19103

215-255-9155

Gary Mark Cohen

Reg. 28834

Patent attorney

King of Prussia, PA · 19406-3710

610-293-7471

Joshua L Cohen

Reg. 38040

Patent attorney

Ratner Prestia

King of Prussia, PA · 19406

610-407-0700

Leslie A Cohen

Reg. 63859

Patent agent

Langhorne, PA · 19053

215-752-7242

Lester Harold Cohen

Reg. 29785

Patent attorney

Philadelphia, PA · 19116

215-676-5078

Ari N. Cohler

Reg. 60631

Patent attorney

Solebury, PA · 18963

646-522-7943

Arthur J Cohn

Reg. 37800

Patent attorney

Pfizer Inc.

Collegeville, PA · 19426

484-865-8956

Gary D Colby

Reg. 40961

Patent attorney

Clearly Clean Products, LLC

Orwigsburg, PA · 17961

267-481-2731

Richard J Coldren

Reg. 44084

Patent attorney

MSA

Cranberry TWP, PA · 16066

724-741-1417

Ian Cole

Reg. 58325

Patent agent

Huntingdon Valley, PA · 19006

215-805-7387

Frederick Haas Colen

Reg. 28061

Patent attorney

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

Nicholas Collura

Reg. 72157

Patent agent

Duane Morris LLP

Philadelphia, PA · 19103

215-979-1956

Michael A. Comber

Reg. 59876

Patent attorney

Farrell & Reisinger, LLC

Pittsburgh, PA · 15219

412-894-1380

Nathan E Comstock

Reg. 59201

Patent attorney

Reed Smith LLP

Pittsburgh, PA · 15222

412-288-8771

Joseph R Condo

Reg. 42431

Patent attorney

Condo Roccia LLP

Philadelphia, PA · 19103

215-558-5740

Sean M Conrad

Reg. 61532

Patent agent

K&L Gates LLP

Pittsburgh, PA · 15222-2613

412-355-6218

Keith L Constantine

Reg. 75458

Patent agent

Langhorne, PA · 19047

215-715-9560

Rebecca J. Conway

Reg. 84248

Patent attorney

Ballard Spahr LLP

Philadelphia, PA · 19103

518-441-7554

Adam J. Cook

Reg. 83160

Patent attorney

Jones Day

Pittsburgh, PA · 15219

412-394-7230

Jude L Cooney

Reg. 54045

Patent attorney

Wilkes-Barre, PA · 18705

570-332-7054

Jonathan R Corbin

Reg. 63053

Patent agent

Mechanicsburg, PA · 17050

717-609-5159

Brynne J Corcoran

Reg. 83991

Patent attorney

Koninklijke Philips

Murrysville, PA · 15668

724-681-7875

Michael J Cornelison

Reg. 40395

Patent attorney

Law Offices Of Caesar Rivise Bernstein Cohen

Philadelphia, PA · 19103

215-567-2010

Andrew Joseph Cornelius

Reg. 29142

Patent attorney

ANDREW J. CORNELIUS, P. C.

Bethel Park, PA · 15102

412-480-6481

Justin M. Cosgrove

Reg. 76295

Patent agent

The Webb Law Firm

Pittsburgh, PA · 15222

412-471-8815

Santosh V Coutinho

Reg. 66757

Patent attorney

Kennett Sq., PA · 19348

215-804-9807

William K Cox

Reg. 31496

Patent attorney

Elliott Company

Jeannette, PA · 15644

724-600-8720

Robert J. Coyle· II

Reg. 84586

Patent agent

West Chester, PA · 19380

484-888-4369

Barry J Coyne

Reg. 43566

Patent attorney

Reed Smith, LLP

Pittsburgh, PA · 15222

412-288-7210

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.