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 Banner & Witcoff, Ltd., McDonnell Boehnen Hulbert & Berghoff LLP, and Akerman LLP.

Top cities in Illinois

All practitioners in Illinois

Joshua D Bosman

Reg. 70335

Patent agent

McDonnell Boehnen Hulbert & Berghoff LLP

Chicago, IL · 60606

312-913-0001

George S Bosy

Reg. 29364

Patent attorney

Chicago, IL · 60611

312-222-9350

Robyn M. Bowland

Reg. 62210

Patent attorney

Akerman LLP

Chicago, IL · 60606

312-634-5700

Roland K Bowler· II

Reg. 33477

Patent attorney

Knowles Corporation

Itasca, IL · 60143

847-421-7214

Aaron P Bowling

Reg. 67311

Patent attorney

Banner & Witcoff, Ltd.

Chicago, IL · 60606

312-463-5000

Megan J. Bowman

Reg. 83538

Patent agent

Ball Horticultural Company

West Chicago, IL · 60185

630-234-3039

Robert M Boyd

Reg. 75348

Patent attorney

Banner & Witcoff, Ltd.

Chicago, IL · 60606

312-463-5426

Michael P Boyea

Reg. 70248

Patent attorney

Lee Sullivan Shea & Smith LLP

Chicago, IL · 60661

312-754-9618

Benjamin J. Bradford

Reg. 74728

Patent attorney

Jenner & Block

Chicago, IL · 60654

312-840-7224

Wayne H Bradley

Reg. 39916

Patent attorney

McAndrews, Held and Malloy, Ltd.

Chicago, IL · 60661

312-775-8000

George C Braidwood

Reg. 41631

Patent attorney

Lempia Summerfield Katz LLC

Chicago, IL · 60603

312-854-8363

Daniel Brajkovic

Reg. 59902

Patent agent

RTS Realtime Systems Inc.

Chicago, IL · 60606

312-630-9006

Lawrence D Brandel

Reg. 38390

Patent attorney

Rockford, IL · 61107

815-399-6041

Michael J Brandt

Reg. 71424

Patent attorney

Leydig, Voit & Mayer, Ltd.

Chicago, IL · 60601-6731

312-616-5600

Erik Arvydas Brannon

Reg. 903110

Limited recognition

Northwestern Pritzker School of Law

Chicago, IL · 60611

847-751-0686

Jeanne M Brashear

Reg. 56301

Patent agent

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6300

Jenna Elizabeth Brasko

Reg. 79464

Patent attorney

Long Grove, IL · 60047

952-807-6529

Jeanette M Braun

Reg. 73891

Patent attorney

Braun IP Law

Addison, IL · 60101

773-504-4036

Michael D Braunstein

Reg. 51248

Patent attorney

Caterpillar Inc.

Peoria, IL · 61629-6490

309-494-5979

Laura E. Breckenridge

Reg. 84176

Patent attorney

Neal, Gerber & Eisenberg LLP

Chicago, IL · 60606

312-269-1752

Peter C Breen

Reg. 47441

Patent attorney

Thomas More Society

Chicago, IL · 60606

312-782-1680

Donald J Breh

Reg. 30159

Patent attorney

Naperville, IL · 60540

630-357-3664

Lauren Hennessey Breit

Reg. 55024

Patent attorney

Kirkland & Ellis LLP

Chicago, IL · 60654

312-862-2000

John T Bretscher

Reg. 52651

Patent attorney

Tranquility Base

Elgin, IL · 60120

847-857-0744

Erin L Brewer

Reg. 78074

Patent attorney

Zurich North America

Schaumburg, IL · 60196

773-870-6271

Jason T Brewer

Reg. 67378

Patent attorney

Zion, IL · 60099

859--55-2-6840

Scott R Brewer

Reg. 39918

Patent agent

Arthur J. Gallagher & Co.

Sleepy Hollow, IL · 60118

847-269-2623

Tamara A Brey

Reg. 67707

Patent attorney

Baxter

Deerfield, IL · 60015

224-764-2079

David C Brezina

Reg. 34128

Patent attorney

Ladas & Parry LLP

Chicago, IL · 60604

312-427-1300

Jeremy Robert Bridge

Reg. 61423

Patent attorney

Reinhart Boerner Van Deuren, P.C.

Rockford, IL · 61107

815-633-5300

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.