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., Zuber Lawler & Del Duca LLP, and Donna E. Becker, Attorney at Law.

Top cities in Illinois

All practitioners in Illinois

Brian J Beck

Reg. 63304

Patent attorney

Zuber Lawler & Del Duca LLP

Chicago, IL · 60603

312-767-6060

Cheryl L Becker

Reg. 35441

Patent attorney

Glenview, IL · 60026

847-509-1184

Donna E Becker

Reg. 44529

Patent attorney

Donna E. Becker, Attorney at Law

Highland Park, IL · 60035

847-946-6776

James E Becker

Reg. 73829

Patent agent

Genective

Champaign, IL · 61820

217-689-8126

Katie L Becker

Reg. 59681

Patent attorney

Banner & Witcoff, Ltd.

Chicago, IL · 60606

312-463-5000

Matthew P Becker

Reg. 45824

Patent attorney

Banner & Witcoff, Ltd.

Chicago, IL · 60606

312-463-5000

Jennifer M Becker-Roscow

Reg. 39601

Patent attorney

Washington County State's Attorney Office

Nashville, IL · 62263

618-327-4800 X 320

Thomas C. Beckius

Reg. 59873

Patent attorney

Chicago, IL · 60640

312-532-8921

William A Beckman

Reg. 57589

Patent attorney

Caterpillar Inc.

Peoria, IL · 61629-6490

309-675-5187

Olivia Luk Bedi

Reg. 57730

Patent attorney

Riley Safer Holmes & Canella LLP

Chicago, IL · 60603

312-471-8765

Laryssa M. Bedley

Reg. 82968

Patent attorney

Barnes & Thornburg LLP

Chicago, IL · 60606

312-214-5610

Ronald Beeley

Reg. 50879

Patent attorney

Chicago, IL · 60657

312-933-3427

Richard P Beem

Reg. 32961

Patent attorney

Beem Patent Law Firm

Chicago, IL · 60604-3787

312-201-0011

David C Beener

Reg. 70062

Patent attorney

Beener Law, Ltd.

Hinsdale, IL · 60521-3184

630-590-9498

Joseph E Begun

Reg. 74610

Patent agent

Chicago, IL · 60615

650-274-1544

Owen G. Behrens

Reg. 79884

Patent attorney

Akerman LLP

Chicago, IL · 60606

312-870-8011

Robert S Beiser

Reg. 28687

Patent attorney

Vedder Price

Chicago, IL · 60601

312-609-7848

Shatra C Bell

Reg. 70420

Patent agent

Chicago, IL · 60601

575-742-8727

Glen P Belvis

Reg. 31735

Patent attorney

Belvis Law, LLC.

Chicago, IL · 60611

630-846-0062

Brendan M. Bement

Reg. 78135

Patent attorney

Waterloo, IL · 62298

618-340-0964

Rachel L. Bender

Reg. 81314

Patent agent

Chicago, IL · 60606

312-463-5471

David R Bennett

Reg. 43493

Patent attorney

Direction IP Law

Chicago, IL · 60614

312-291-1667

S. M. Bennett

Reg. 53981

Patent agent

CHICAGO, IL · 60610

312-560-7900

Joseph M Bennett-Paris

Reg. 47226

Patent attorney

Taft Stettinius & Hollister LLP

Chicago, IL · 60601

312-836-4033

Edward Leonard Benno

Reg. 17085

Patent attorney

Grays Lake, IL · 60030

847-223-4906

Martin J Benson

Reg. 26839

Patent agent

Chicago, IL · 60618

773-267-8241

Stephen P Benson

Reg. 60030

Patent attorney

Freeborn & Peters LLP

Chicago, IL · 60606

312-360-6000

Helena O. Berezowskyj

Reg. 81509

Patent attorney

Chicago, IL · 60622

618-304-1605

Ekaterina G Berezutskaya

Reg. 53984

Patent attorney

Greer, Burns & Crain, Ltd.

Chicago, IL · 60606

312-360-0080

Joseph J Berghammer

Reg. 46057

Patent attorney

Banner and Witcoff, Ltd

Chicago, IL · 60606

312-463-5000

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.