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 Knowles Electronics, LLC, Rockman Videbeck & O'Connor, and McDonnell Boehnen Hulbert & Berghoff LLP.

Top cities in Illinois

All practitioners in Illinois

Christine Vi

Reg. 84625

Patent agent

Chicago, IL · 60640

773-603-9798

Karl A Vick

Reg. 33288

Patent attorney

Chicago, IL · 60644

312-259-6850

Austin Victor

Reg. 47154

Patent attorney

Knowles Electronics, LLC

Itasca, IL · 60143

847-212-1926

James N Videbeck

Reg. 27241

Patent attorney

Rockman Videbeck & O'Connor

Oakbrook Terrace, IL · 60181

630-627-4552

Dmitriy A Vinarov

Reg. 50415

Patent attorney

McDonnell Boehnen Hulbert & Berghoff LLP

Chicago, IL · 60606

312-913-0001

Robert A Vitale· Jr

Reg. 32319

Patent attorney

Vitale, Vickrey, Niro & Gasey LLP

Chicago, IL · 60606

312-236-0733

Lizabeth K Vitellaro

Reg. 58405

Patent agent

Chicago, IL · 60614

312-751-1386

Nguyen Sy Vo

Reg. 59857

Patent attorney

Medline Industries

Northfield, IL · 60093

224-931-1161

Alden E. Voelker

Reg. 75141

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-423-3444

Alexander M. Vogler

Reg. 83908

Patent attorney

McAndrews, Held & Malloy Ltd.

Chicago, IL · 60661

312-775-8000

Keith A Vogt

Reg. 37252

Patent attorney

Keith Vogt, LTD

Chicago, IL · 60604

312-675-6079

Anthony G Volini

Reg. 48016

Patent attorney

DePaul University College of Law

Chicago, IL · 60604

312-362-7306

William J. Voller· III

Reg. 64102

Patent attorney

Loeb & Loeb LLP

Chicago, IL · 60654

312-464-3143

Michael G. Vranicar

Reg. 55770

Patent attorney

Law Offices of Michael G. Vranicar

Chicago, IL · 60601

312-332-8500

Beth A Vrioni

Reg. 39869

Patent attorney

Abbott Laboratories

Abbott Park, IL · 60064-6008

847-938-7576

Mark P Vrla

Reg. 43973

Patent attorney

Jenner and Block, LLC

Chicago, IL · 60611

312-222-9350

Anandita Vyakarnam

Reg. 60809

Patent attorney

Hahn Loeser & Parks LLP

Chicago, IL · 60606

312-637-3070

Himanshu Anant Vyas

Reg. 52331

Patent attorney

BP America, Inc.

Warrenville, IL · 60555

630-821-2443

Akira Wada

Reg. 79809

Patent agent

Evanston, IL · 60201

310-849-7172

Anuj K Wadhwa

Reg. 50407

Patent attorney

Rakoczy Molino Mazzochi Siwik LLP

Chicago, IL · 60654

312-222-7528

Mustafa Wahdan

Reg. 903017

Limited recognition

University of Illinois Chicago School of Law

Chicago, IL · 60604

224-392-4912

Ann Marie T. Wahls

Reg. 75776

Patent attorney

Latham & Watkins LLP

Chicago, IL · 60611

312-876-7615

James M Wakely

Reg. 48597

Patent attorney

Chicago, IL · 60614

312-375-8535

Rachel P. Waldron

Reg. 65704

Patent attorney

Kirkland & Ellis LLP

Chicago, IL · 60654

312-862-3371

Donald W Walk

Reg. 29118

Patent attorney

Acco Brands Corporation

Lincolnshire, IL · 60069

847-484-3155

Hopeton Saint John Walker

Reg. 64808

Patent attorney

CHIP Law Group

Chicago, IL · 60611

312-803-5837

Jeffrey Simmons Walker

Reg. 66348

Patent attorney

Glenview, IL · 60025

224-661-7815

John A Walker

Reg. 80872

Patent attorney

Crowell and Moring LLP

Chicago, IL · 60611

312-840-3165

Joseph M Walker

Reg. 66798

Patent attorney

Taft Stettinius & Hollister LLP

Chicago, IL · 60601

312-836-5887

Sarah M Walkington

Reg. 55803

Patent attorney

Geneva, IL · 60134

773-562-1456

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.