Illinois

Patent attorneys in Illinois

Illinois hosts 2,889 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 Illinois. 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 Schiff Hardin LLP, Baker & McKenzie, LLP, and Rockey & Lyons.

Top cities in Illinois

All practitioners in Illinois

Melvin Alan Robinson

Reg. 31870

Patent attorney

Schiff Hardin LLP

Chicago, IL · 60606

312-258-5785

David I Roche

Reg. 30797

Patent attorney

Baker & McKenzie, LLP

Chicago, IL · 60601

312-861-8608

Keith Von Rockey

Reg. 24713

Patent attorney

Rockey & Lyons

Chicago, IL · 60601

312-268-5703

Howard B Rockman

Reg. 22190

Patent attorney

Rockman, Videbeck & O'Connor

Oakbrook Terrace, IL · 60181

630-627-4552

Amy Lucinda Rockwell

Reg. 32094

Patent attorney

Lake Bluff, IL · 60044

847-482-0769

Paul Louis Rodriguez

Reg. 40788

Patent attorney

RR Donnelley & Son Company

Chicago, IL · 60606

312-326-8013

Sharon A Rogers

Reg. 53529

Patent agent

Ledell INC

Vernon Hills, IL · 60061

847-816-8103

Kurt W Rohde

Reg. 62923

Patent attorney

Barnes & Thornburg LLP

Chicago, IL · 60606

312-214-4505

Rebecca P Rokos

Reg. 42109

Patent attorney

Banner & Witcoff, Ltd

Chicago, IL · 60606

312-463-5000

John F Rollins

Reg. 38013

Patent attorney

Law Office of John F. Rollins

Wheaton, IL · 60187

630-649-9688

Sherry L Rollo

Reg. 61447

Patent attorney

Hahn Loeser & Parks, LLP

Chicago, IL · 60606

312-637-3020

Natascia M Roman

Reg. 78216

Patent agent

Lowis & Gellen, LLP

Chicago, IL · 60604

847-714-6648

Ashley E Romano

Reg. 64554

Patent attorney

UOP, LLC

Des Plaines, IL · 60017

847-391-3976

Meghan R Rooney

Reg. 57261

Patent attorney

Chicago, IL · 60657

773-919-2875

Daniel S Roper

Reg. 75468

Patent agent

Lake Forest, IL · 60045

224-234-9427

Harry Joseph Roper

Reg. 22444

Patent attorney

Jenner & Block

Chicago, IL · 60654

312-923-8303

Nelson M. Rosario

Reg. 80333

Patent attorney

Rosario Tech Law, LLC

Chicago, IL · 60660

615-406-6112

Benjamin P. Rosborough

Reg. 83384

Patent attorney

Motorola Solutions, Inc.

Chicago, IL · 60661

312-228-5144

David Gustav Rosenbaum

Reg. 31872

Patent attorney

Rosenbaum IP, P.C.

Chicago, IL · 60606

847-770-6000

John Edward Rosenquist

Reg. 26356

Patent attorney

Green, Griffith & Borg-Breen LLP

Chicago, IL · 60611

312-883-8000

Michael D Ross

Reg. 45057

Patent attorney

Law Office of Michael Ross

Naperville, IL · 60563

630-631-4646

Robert John Ross

Reg. 45058

Patent attorney

Olson & Cepuritis, LTD.

Chicago, IL · 60606

312-580-1180

Thomas Irving Ross

Reg. 29275

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6300

Anna A Rostovtsev

Reg. 73482

Patent attorney

Edwardsville, IL · 62025

312-523-7985

Ariel H Roth

Reg. 78731

Patent attorney

Mars Wrigley

Chicago, IL · 60642

773-892-9497

Patrick E Rothstein

Reg. 78335

Patent agent

Marshall, Gerstein and Borun LLP

Chicago, IL · 60606

312-423-3462

Seymour Rothstein

Reg. 19369

Patent attorney

Olson & Cepuritis LTD

Chicago, IL · 60606

312-580-1180

Benjamin D Rotman

Reg. 69324

Patent attorney

Greensfelder, Hemker & Gale, P.C.

Chicago, IL · 60602

312-345-5016

Jeremy D. Roux

Reg. 72745

Patent attorney

Kirkland & Ellis LLP

Chicago, IL · 60654

312-862-3435

Kirk D Rowe

Reg. 67678

Patent attorney

Glen Ellyn, IL · 60137

Common questions

Do I need a patent attorney based in Illinois?

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 Illinois-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 Illinois?

2,889 active USPTO-registered patent practitioners list a Illinois 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.