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 CSL Behring LLC, Condo Roccia Koptiw LLP, and Baker & Hostetler LLP.

Top cities in Pennsylvania

All practitioners in Pennsylvania

Rachel Heindel Rondinelli

Reg. 45052

Patent agent

Lansdale, PA · 19446

215-264-9149

David William Ronemus

Reg. 47905

Patent attorney

CSL Behring LLC

King of Prussia, PA · 19406

610-878-4667

Zheng Rong

Reg. 75396

Patent agent

Philadelphia, PA · 19146

480-580-5935

Heather M. Rose

Reg. 67257

Patent attorney

Philadelphia, PA · 19139

215-983-7130

Mark E Rose

Reg. 42113

Patent attorney

Condo Roccia Koptiw LLP

Philadelphia, PA · 19103

215-764-5927

Jeffrey Harris Rosedale

Reg. 46018

Patent attorney

Baker & Hostetler LLP

Philadelphia, PA · 19103-7501

215-568-3100

Brett J Rosen

Reg. 56047

Patent attorney

Buchanan Ingersoll & Rooney PC

King of Prussia, PA · 19406

610-407-0700

Gary A Rosen

Reg. 45055

Patent attorney

Law Offices of Gary A Rosen, PC

Haverford, PA · 19041

610-526-0600

Mark J Rosen

Reg. 39822

Patent attorney

Naval Surface Warfare Center, Philadelphia Division

Philadelphia, PA · 19112

215-897-2935

Andrew M. Rosenau

Reg. 74041

Patent attorney

Philadelphia, PA · 19147

215-317-5091

Leonard Rosenfeld

Reg. 72702

Patent agent

Morrisville, PA · 19067

908-239-3829

Robert Evan Rosenthal

Reg. 33450

Patent attorney

Howard IP Law Group

Fort Washington, PA · 19034

215-542-5824

Roy J Rosser

Reg. 53533

Patent agent

r.r

YARDLEY, PA · 19067

609-474-0053

Joseph Dominic Rossi

Reg. 47038

Patent attorney

Armstrong Teasdale LLP

Philadelphia, PA · 19103

267-780-2002

Christopher A Rothe

Reg. 54650

Patent attorney

Culhane Meadows, PLLC

West Chester, PA · 19380

484-459-1531

Anthony T. Rotolo

Reg. 82691

Patent attorney

Oakdale, PA · 15071

585-503-6554

Eric W. Rotteveel

Reg. 80443

Patent agent

Langhorne, PA · 19047

267-670-0335

Bradley Noell Ruben

Reg. 32058

Patent attorney

Bala Cynwyd, PA · 19004-1838

201-388-0864

Charles Gerald Rudershausen

Reg. 28534

Patent agent

Kennett Square, PA · 19348

610-444-3773

Gilbert William Rudman

Reg. 27589

Patent attorney

Ambler, PA · 19002

215-646-8729

Stuart D Rudoler

Reg. 45059

Patent attorney

Bala Cynwyd, PA · 19004

610-660-7753

Pamela Alyce Ruest

Reg. 40795

Patent attorney

Centre County Courthouse

Bellefonte, PA · 16823

814--54-8-1190

Cary E Ruffner

Reg. 36261

Patent agent

Lanxess Corporation

Pittsburgh, PA · 15275

412-809-3753

Eric D Ruka

Reg. 45060

Patent agent

Pittsburgh, PA · 15206

412-977-8351

Amy E. Rupert

Reg. 76763

Patent agent

Jones Day

Pittsburgh, PA · 15219

412-394-7991

Eli D. Russeck

Reg. 65871

Patent agent

Broomall, PA · 19008

610-212-6829

Brendan P Ryan

Reg. 60451

Patent attorney

Plymouth Meeting, PA · 19462

215-668-6236

Daniel J. Ryan

Reg. 61232

Patent attorney

Blade Diagnostics Corp.

Pittsburgh, PA · 15217

407-619-4833

Joshua B Ryan

Reg. 56438

Patent attorney

Siemens Medical Solutions USA Inc

Malvern, PA · 19355-1406

484-473-3095

Michael S Ryan

Reg. 63115

Patent agent

Philadelphia, PA · 19103

610-574-1318

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.