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 Ruby Cleaners Outlet, Mayer Brown LLP, and Tribune Company.

Top cities in Illinois

All practitioners in Illinois

Aaron H Min

Reg. 75467

Patent agent

Ruby Cleaners Outlet

Wheaton, IL · 60189

630-788-3900

Luiz A Miranda

Reg. 74762

Patent attorney

Mayer Brown LLP

Chicago, IL · 60606

312-701-8873

Rita Mirman

Reg. 40093

Patent attorney

Tribune Company

Chicago, IL · 60611

312-222-3290

Sadaf Misbah

Reg. 79583

Patent agent

Des Plaines, IL · 60018

224-409-8291

Eric D Misfeldt

Reg. 59527

Patent attorney

Caterpillar Inc.

Peoria, IL · 61629

309-675-0196

Calista J Mitchell

Reg. 63944

Patent attorney

Fitch, Even, Tabin & Flannery, LLP

Chicago, IL · 60603-3406

312-577-7000

Shaoni L Mitchell

Reg. 59321

Patent attorney

Banner & Witcoff, LTD

Chicago, IL · 60606-7407

312-463-5000

Sudip Mitra

Reg. 75900

Patent attorney

VedderPrice

Chicago, IL · 60601

312-882-2256

Janice V Mitrius

Reg. 43808

Patent attorney

Banner & Witcoff, Ltd

Chicago, IL · 60606

312-463-5481

Lucas J Mlsna

Reg. 70781

Patent attorney

Lucas J. Mlsna, Attorney at Law

Evanston, IL · 60202

815-520-1583

Andrew B. Mlyniec

Reg. 82502

Patent agent

State Farm

Bloomington, IL · 61701

309-766-0071

Janine A Moderson

Reg. 50981

Patent attorney

Amin Talati, LLC

Chicago, IL · 60603

312-466-1033

Gaurav K Mohindra

Reg. 61321

Patent attorney

Mohindra Law Group P.C.

Westmont, IL · 60559

630-243-4207

Jeffrey Robert Moisan

Reg. 75061

Patent attorney

HERE Technologies

Chicago, IL · 60606

312-894-7000

Frank S Molinaro

Reg. 32710

Patent attorney

Frank S Molinaro

Glencoe, IL · 60022

224-244-2414

Paul John Molino

Reg. 45350

Patent attorney

Rakoczy Molino Mazzochi Siwik LLP

Chicago, IL · 60610

312-222-6340

Jeremie D. Moll

Reg. 62432

Patent attorney

WMS Gaming, Inc.

Chicago, IL · 60618

773-961-1267

Christopher Michael Monaco

Reg. 77308

Patent attorney

Darien, IL · 60561

630-930-4923

Dean A Monco

Reg. 30091

Patent attorney

Wood Phillips Katz Clark and Mortimer

Chicago, IL · 60661

312-876-1800

J Derel Monteith· Jr

Reg. 45464

Patent attorney

Caterpillar, Inc.

Peoria, IL · 61629

309-675-5834

Allisyn E Monteleone

Reg. 77026

Patent attorney

ABBVIE INC.

North Chicago, IL · 60064

304-539-2030

Michael S. Montgomery

Reg. 70919

Patent attorney

AbbVie, Inc.

North Chicago, IL · 60064

847-937-7418

Jared W. Montney

Reg. 84265

Patent agent

Bloomington, IL · 61704

309-831-9997

Ian M. Moodie

Reg. 74128

Patent attorney

Brinks Gilson & Lione

Chicago, IL · 60611

312-840-3245

Alison S. Moon

Reg. 83680

Patent agent

Chicago, IL · 60642

240-620-4425

Clarence R Moon· III

Reg. 70106

Patent agent

Lisle, IL · 60532

630-527-4348

Jane H. Moon

Reg. 72768

Patent attorney

Chicago, IL · 60602

312-476-7684

MyLynda J Moore

Reg. 74156

Patent attorney

Chicago, IL · 60603

773-209-7531

Eric R Moran

Reg. 50967

Patent attorney

McDonnell Boehnen Hulbert & Berghoff LLP

Chicago, IL · 60606

312-913-0001

Ion C Moraru

Reg. 77750

Patent attorney

Nixon Peabody LLP

Chicago, IL · 60602

312-977-4467

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.