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 Scientific Games Corporation, The University of Chicago, and Motorola Solutions, Inc..

Top cities in Illinois

All practitioners in Illinois

Denis A Berntsen

Reg. 26707

Patent attorney

Chicago, IL · 60657

312-671-2813

Emily L Berris

Reg. 73685

Patent attorney

Plainfield, IL · 60544

815-954-3405

Jason A. Berta

Reg. 72623

Patent attorney

Scientific Games Corporation

Chicago, IL · 60618

773-961-1547

Roger E. Best

Reg. 71894

Patent attorney

Chicago, IL · 60652

773-540-1020

Timothy Best

Reg. 70599

Patent agent

The University of Chicago

Chicago, IL · 60637

773-702-2159

Daniel R Bestor

Reg. 58439

Patent attorney

Motorola Solutions, Inc.

Chicago, IL · 60661

847-576-2833

Tyler A Beth

Reg. 83713

Patent agent

Hinsdale, IL · 60521

630-408-2776

Christopher John Betti

Reg. 56890

Patent attorney

Morgan, Lewis & Bockius LLP

Chicago, IL · 60601

312-324-1449

Carrie A Beyer

Reg. 59195

Patent attorney

Faegre Drinker Biddle & Reath LLP

Chicago, IL · 60606

312-569-1487

Manisha S Bhangare

Reg. 66633

Patent agent

Burr Ridge, IL · 60527

630-886-6859

Priyal Bhargava

Reg. 81474

Patent attorney

Hanley, Flight & Zimmerman, LLC

Chicago, IL · 60606

312-676-1718

Sarju R. Bharucha

Reg. 59716

Patent agent

Naperville, IL · 60565

630-263-7689

Somnath Bhattacharyya

Reg. 55005

Patent agent

Homewood, IL · 60430

708-921-1334

Depeng Bi

Reg. 67209

Patent attorney

Naperville, IL · 60563

630-318-2606

Brian C Bianco

Reg. 51471

Patent attorney

Akerman LLP

Chicago, IL · 60606

312-634-5700

Keelin D Bielski

Reg. 78739

Patent attorney

Leydig, Voit & Mayer

Chicago, IL · 60601

312-616-5600

Isadora F. Bielsky

Reg. 60748

Patent agent

McDonnell Boehnen Hulbert & Berghoff LLP

Chicago, IL · 60606

312-913-0001

Sarah A Biggs

Reg. 60218

Patent attorney

McAndrews, Held & Malloy, Ltd

Chicago, IL · 60661

312-775-8213

Steven J Birkos

Reg. 65300

Patent attorney

Chicago, IL · 60605

919-619-1281

John G Bisbikis

Reg. 37095

Patent attorney

Prospect Law LLP

Chicago, IL · 60602

312-374-8084

Edward L Bishop

Reg. 39110

Patent attorney

Bishop, Diehl & Lee, Ltd.

Schaumburg, IL · 60173

847-969-9123

Heather Ann Bjella

Reg. 59417

Patent attorney

AURORA WDC

Chicago, IL · 60611

312-775-8000

Marc S Blackman

Reg. 43501

Patent attorney

Jones Day

Chicago, IL · 60606

312-782-3939

Raiford A Blackstone· Jr

Reg. 25156

Patent attorney

Clark Hill, PLC

Chicago, IL · 60601

312-985-5556

Andrew D. Blake

Reg. 83969

Patent agent

Evanston, IL · 60202-2392

240-506-1743

Yufei W Blankenship

Reg. 63612

Patent agent

Kildeer, IL · 60047

847-241-4872

Michael J Blankstein

Reg. 37097

Patent attorney

WMS Gaming Inc.

Chicago, IL · 60618

773-961-1480

Scott D Bloomer

Reg. 52626

Patent agent

Decatur, IL · 62521

217-454-5598

Karen L Blouin

Reg. 57098

Patent attorney

Numat Technologies

Chicago, IL · 60651

847-929-4186

David H Bluestone

Reg. 44542

Patent attorney

Barack Ferrazzano Kirschbaum & Nagelberg

Chicago, IL · 60606

312-984-3106

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.