Illinois

Patent attorneys in Illinois

Illinois hosts 2,917 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 Duane Morris LLP, Greenberg Traurig, LLP, and Leydig Voit and Mayer LTD.

Top cities in Illinois

All practitioners in Illinois

Jeffrey G Mote

Reg. 48791

Patent attorney

Greenberg Traurig, LLP

Chicago, IL · 60601

312-456-8400

Peter G Mott

Reg. 72164

Patent attorney

Chicago, IL · 60611

810-845-5554

Charles Helvetius Mottier

Reg. 30874

Patent attorney

Leydig Voit and Mayer LTD

Chicago, IL · 60601

312-616-5600

Robbie M Mourad

Reg. 69022

Patent attorney

Maxim Legal Advisers

Aurora, IL · 60504

630-854-5135

Rami Naim Moussa

Reg. 69528

Patent attorney

McAndrews, Held & Malloy, Ltd.

Chicago, IL · 60661

312-775-8000

Michael Muczynski

Reg. 48642

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6300

Lisa V Mueller

Reg. 38978

Patent attorney

Michael Best

Chicago, IL · 60606

312-222-0800

Wesley O Mueller

Reg. 33976

Patent attorney

Leydig Voit &mayer LTD

Chicago, IL · 60601

312-616-5600

Patrick T. Muffo

Reg. 60342

Patent attorney

Polsinelli P.C.

Chicago, IL · 60606

312-873-2988

Konstantinos T Muhtaris

Reg. 62720

Patent agent

Chicago, IL · 60640

847-997-1711

Christopher L. Mulkey

Reg. 66651

Patent attorney

Chicago, IL · 60657

702-281-6950

Elisa Y Muller

Reg. 59015

Patent attorney

Palatine, IL · 60067

773-896-5681

Evan J Muller

Reg. 78063

Patent attorney

Duane Morris LLP

Chicago, IL · 60603-3433

312-499-6709

Jeffrey M Muller

Reg. 45351

Patent attorney

UCS Forest Group

West Chicago, IL · 60185

630-231-0450

Michael F Muller

Reg. 69679

Patent attorney

Palatine, IL · 60067

847-894-6829

Brandon C Munden

Reg. 77995

Patent agent

Chicago, IL · 60660

832-584-8982

David M Mundt

Reg. 41207

Patent attorney

The Law Offices of Eugene M. Cummings, P.C.

Chicago, IL · 60606

312-984-0144

John E Munro

Reg. 66864

Patent attorney

Duane Morris LLP

Chicago, IL · 60603

312-499-6786

Herbert F Munsterman

Reg. 40740

Patent attorney

Herbert F. Munsterman

Hoffman Estates, IL · 60192

847-778-6130

James P Muraff

Reg. 39785

Patent attorney

McDonald Hopkins LLC

Chicago, IL · 60654

312-371-6265

Dennis S Murphy

Reg. 54328

Patent agent

Libertyville, IL · 60048

847-752-4766

James P Murphy

Reg. 40741

Patent attorney

McAndrews Held & Malloy, Ltd

Chicago, IL · 60661

312-775-8000

Jeremy E. Murphy

Reg. 81520

Patent attorney

Troutman Pepper Locke LLP

Chicago, IL · 60606

312-443-0546

Leonard Edward Murphy

Reg. 37894

Patent attorney

Property Loss Research Bureau

Downers Grove, IL · 60515-1291

630-724-2213

Mark J Murphy

Reg. 34225

Patent attorney

HuschBlackwell LLP

Chicago, IL · 60606

312-526-1533

Adrian J Murray

Reg. 44251

Patent agent

Brinks Gilson & Lione

Chicago, IL · 60611

312-321-4229

Brian J Murray

Reg. 48934

Patent attorney

Glen Ellyn, IL · 60137

312-782-3939

Daniel Allen Murray

Reg. 37195

Patent attorney

Wilmette, IL · 60091

847-920-9042

Navaneeth K. Murthy

Reg. 81099

Patent agent

Chicago, IL · 60607

972-835-9711

Sanjay Krishna Murthy

Reg. 45976

Patent attorney

Taft Stettinius & Hollister LLP

Chicago, IL · 60601

312-966-8576

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?

2,917 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.