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 Ladas & Parry LLP, Werner Co, and Howard & Howard Attorneys PLLC.

Top cities in Illinois

All practitioners in Illinois

David R Van Buskirk

Reg. 72243

Patent attorney

Chicago, IL · 60657

303-579-5783

Michael F. Van Duinen

Reg. 84245

Patent agent

Chicago, IL · 60615

616-510-6091

Keith S Van Duyne

Reg. 54505

Patent attorney

Ladas & Parry LLP

Chicago, IL · 60604

312-427-1300

Pooja A Van Dyck

Reg. 64806

Patent attorney

Werner Co

Itasca, IL · 60143

847-284-2505

David C Van Dyke

Reg. 48784

Patent attorney

Howard & Howard Attorneys PLLC

Chicago, IL · 60604

312-456-3641

Zachary T. Van Engen

Reg. 78131

Patent attorney

Zachary Van Engen

Chicago, IL · 60603

312-629-7982

Jonathan P Van Es

Reg. 37746

Patent attorney

Banner & Witcoff LTD

Chicago, IL · 60606

312-463-5000

Prestin C. Van Mieghem

Reg. 84151

Patent attorney

Fitch, Even, Tabin & Flannery

Chicago, IL · 60603

312-577-7000

Bradley J. Van Pelt

Reg. 59773

Patent attorney

Banner & Witcoff, Ltd.

Chicago, IL · 60606

312-463-5000

Michael A. Van Ryn

Reg. 81871

Patent agent

Chicago, IL · 60647

773-938-0502

Dean F Vance

Reg. 27603

Patent attorney

Naperville, IL · 60540

630-857-3956

Kirk A Vander Leest

Reg. 34036

Patent attorney

McAndrew Held & Malloy, Ltd.

Chicago, IL · 60661

312-775-8000

Mark L Varboncouer

Reg. 50941

Patent attorney

Varboncouer Law

Frankfort, IL · 60423

815-278-2448

Elias V Vargas

Reg. 71564

Patent attorney

Zebra Technologies Corporation

Lincolnshire, IL · 60069

862-294-0999

Diana L Vargo

Reg. 39055

Patent attorney

Joliet, IL · 60433

815-727-5476

Paul M Vargo

Reg. 29116

Patent attorney

Warrenville, IL · 60555

708-214-5947

Nicholas E Vassy

Reg. 58808

Patent attorney

Chicago, IL · 60657

773-573-9425

Tearra J. Vaughn

Reg. 71211

Patent attorney

FAIRVIEW HEIGHTS, IL · 62208

314-246-0177

Vani Vedam

Reg. 77171

Patent attorney

Downers Grove, IL · 60516

630-929-0728

Jacqueline C. Vega

Reg. 81137

Patent agent

Orland Park, IL · 60462

708-846-5916

Michael C. Vega

Reg. 82095

Patent agent

DeKalb, IL · 60115

773-850-1423

Anthony G Vella

Reg. 47152

Patent attorney

Loves Park, IL · 61111

331-201-7628

Andrew H. Velzen

Reg. 74547

Patent attorney

McDonnell Boehnen Hulbert & Berghoff LLP

Chicago, IL · 60606

312-913-0001

Sarita P Venkat

Reg. 57493

Patent attorney

Abbott Laboratories

Abbott Park, IL · 60064-6008

847-937-0828

Sreenivasarao Vepachedu

Reg. 46395

Patent attorney

Dr. Sreenivasarao Vepachedu

Vernon Hills, IL · 60061

847-393-3584

Brian A. Verbus

Reg. 71566

Patent attorney

Chicago, IL · 60654

630-881-2175

James R. Vergara

Reg. 69791

Patent attorney

Barnes & Thornburg LLP

Chicago, IL · 60606

312-214-2117

Mary K. Verzal

Reg. 62682

Patent agent

Abbvie Inc.

North Chicago, IL · 60064

847-938-4822

Elizabeth Ann Vesto

Reg. 39866

Patent attorney

Kildeer, IL · 60047

224-595-1283

Timothy J Vezeau

Reg. 26348

Patent attorney

Highland Park, IL · 60035

847-926-8427

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.