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 Abbott Laboratories, Taft Stettinius & Hollister LLP, and UOP LLC.

Top cities in Illinois

All practitioners in Illinois

Mimi C Goller

Reg. 39046

Patent attorney

Abbott Laboratories

Abbott Park, IL · 60064

847-935-7550

William B. Gont

Reg. 57232

Patent attorney

Taft Stettinius & Hollister LLP

Chicago, IL · 60601

312-836-4054

Arthur E Gooding

Reg. 50513

Patent attorney

UOP LLC

Des Plaines, IL · 60017

847-391-1520

Aaron B. Goodman

Reg. 58824

Patent attorney

Baker Hostetler LLP

Chicago, IL · 60606

312-416-8186

Sean G. Goodwin

Reg. 66760

Patent attorney

The Goodwin Law Firm

Evanston, IL · 60201

312-588-6762

Rahul K Goravara

Reg. 68416

Patent attorney

Chicago, IL · 60602

224-727-8844

Elias M Gordan

Reg. 37840

Patent attorney

Law Office Of Elias M. Gordan

Palos Park, IL · 60464

708-923-9735

Jennifer L. Gordon

Reg. 64114

Patent attorney

Lorium Law

Chicago, IL · 60611

312-564-5757

Latonia H Gordon

Reg. 37039

Patent attorney

Chicago, IL · 60605

312-753-9889

Shawn P Gorman

Reg. 56197

Patent attorney

Banner & Witcoff, Ltd

Chicago, IL · 60606

312-463-5434

Eugene Goryunov

Reg. 61579

Patent attorney

Northbrook, IL · 60062

847-778-3923

David A Gosse

Reg. 61511

Patent attorney

Nokia

Naperville, IL · 60563

312-420-8430

David A Gottardo

Reg. 46736

Patent attorney

Oak Park, IL · 60304

708-763-9526

Robert M Gould

Reg. 43642

Patent attorney

Hahn Loeser & Park, LLP

Chicago, IL · 60606

312-637-3040

William C Grabarek

Reg. 29923

Patent attorney

Elburn, IL · 60119-8022

630-253-7555

David Andrew Grabelsky

Reg. 59208

Patent agent

Skokie, IL · 60076

847-922-4389

Alex M Grabowski

Reg. 74009

Patent attorney

Arlington Heights, IL · 60004

847-636-8823

D'Vorah Graeser

Reg. 40000

Patent agent

Graeser Associates International Inc.

Chicago, IL · 60602

312-214-3775

Jay D. Graf

Reg. 60635

Patent attorney

Arlington Heights, IL · 60005

847-506-4366

Stuart I Graff

Reg. 32698

Patent attorney

Chicago, IL · 60626

773-242-0199

Charles T Graham

Reg. 32226

Patent attorney

Deere and Company

Moline, IL · 61265

309-716-2415

Jacob R Graham

Reg. 69544

Patent agent

Axiom

Chicago, IL · 60603

717-554-0056

Joshua L. Grant

Reg. 79643

Patent attorney

Vedder Price P.C.

Chicago, IL · 60601

312-609-7511

Jeffrey R Gray

Reg. 33391

Patent attorney

Barnes & Thornburg LLP

Chicago, IL · 60690-2786

312-214-4807

Michael J. Gray

Reg. 78536

Patent attorney

Dennemeyer & Associates

Chicago, IL · 60606

630-890-8641

Charles F Green

Reg. 69019

Patent attorney

Invention Mine LLC

Chicago, IL · 60661

312-834-4334

Joseph E. Green

Reg. 60197

Patent attorney

Chicago Board Options Exchange Incorporated

Chicago, IL · 60605

312-786-5600

Robert F Green

Reg. 27555

Patent attorney

Green, Griffith & Borg - Breen, LLP

Chicago, IL · 60611

312-883-8000

Barbara R Greenberg

Reg. 30260

Patent attorney

Hinsdale, IL · 60521

630-939-9291

Jeff A Greene

Reg. 45756

Patent agent

Caterpillar, Inc.

Peoria, IL · 61629

309-675-1056

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.