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 McDonnell Boehnen Hulbert & Berghoff LLP, Frank S Molinaro, and Rakoczy Molino Mazzochi Siwik LLP.

Top cities in Illinois

All practitioners in Illinois

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

Christopher Paul Moreno

Reg. 38566

Patent attorney

Moreno Intellectual Property Law LLC

Schaumburg, IL · 60195

312-310-1008

Jason V. Morgan

Reg. 55464

Patent attorney

Guntin & Gust, PLC

Barrington, IL · 60010

872-216-3942

Michael F Morgan

Reg. 42906

Patent attorney

Precision Planting LLC

Tremont, IL · 61568

309-925-5050 EXT 337

Rashad L Morgan

Reg. 60304

Patent attorney

Crowell & Moring LLP

Chicago, IL · 60611

312-321-4200

Rejean Abraham Morgan

Reg. 54322

Patent attorney

Abraham-Morgan LLC

Lake Forest, IL · 60045

224-828-3426

Tristan J. Morgan

Reg. 84264

Patent attorney

McDonnell Boehnen Hulbert & Berghoff LLP

Chicago, IL · 60611

312-913-0001

Sean F Moriarty

Reg. 65446

Patent attorney

Fresenius Kabi

Lake Zurich, IL · 60047

847-550-2760

Monique Ann Morneault

Reg. 37893

Patent attorney

Scherrer Patent & Trademark Law P.C.

Crystal Lake, IL · 60014

815-595-4783

David R Morris

Reg. 53348

Patent agent

Chamberlain Group

Oak Brook, IL · 60523

630-279-3600

Gregory A Morris

Reg. 53349

Patent attorney

Honigman LLP

Chicago, IL · 60606

312-701-9306

Jeffrey M Morris

Reg. 27458

Patent attorney

Lincolnshire, IL · 60069

847-830-2286

Aaron J Morrow

Reg. 55819

Patent attorney

K&L Gates LLP

Chicago, IL · 60602

312-781-6043

John Stirling Mortimer

Reg. 30407

Patent attorney

Wood Phillips

Chicago, IL · 60661

312-876-2113

Stanley F Moskal· Jr.

Reg. 57525

Patent agent

Westchester, IL · 60154

708-562-1242

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.