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 Kirkland & Ellis LLP, Jenner & Block, LLP, and Greer, Burns & Crain, LTD.

Top cities in Illinois

All practitioners in Illinois

Reginald J Hill

Reg. 39225

Patent attorney

Jenner & Block, LLP

Chicago, IL · 60654

312-222-9350

Thomas Edward Hill

Reg. 28955

Patent attorney

Greer, Burns & Crain, LTD

Chicago, IL · 60606

312-987-2923

Mark Darl Hilliard

Reg. 30463

Patent attorney

UChicago Argonne, LLC

Argonne, IL · 60439-4832

630-252-9909

Richard Craig Himelhoch

Reg. 35544

Patent attorney

Greensfelder, Hemker & Gale, P.C.

Chicago, IL · 60606

312-345-5025

Christian B. E. Hines

Reg. 65892

Patent attorney

Chicago, IL · 60610

314-368-6795

Christopher L Hines

Reg. 69210

Patent attorney

Norton Rose Fulbright

Chicago, IL · 60607

312-964-7731

Neil Scott Hirshman

Reg. 36829

Patent attorney

Kirkland & Ellis LLP

Chicago, IL · 60654

312-862-2493

Paul M Hletko

Reg. 51806

Patent attorney

Cardinal Law Group

Evanston, IL · 60201

847-905-7111

Li Chung Daniel Ho

Reg. 41837

Patent attorney

Accenture

Chicago, IL · 60601

312-693-5918

Lily B Ho

Reg. 83760

Patent attorney

Benesch Friedlander Coplan & Aronoff LLP

Chicago, IL · 60606-4637

312-624-6408

Sang Ho

Reg. 82868

Patent agent

Chicago, IL · 60660

773-313-7950

Robert Patrick Hoag

Reg. 39712

Patent attorney

Taft Stettinius & Hollister LLP

Chicago, IL · 60601-4208

312-527-4000

Douglass Clifford Hochstetler

Reg. 33710

Patent attorney

Kelley Drye & Warren LLP

Chicago, IL · 60606

312-857-2629

R Sean Hocking

Reg. 45970

Patent attorney

Craig and Craig

Mattoon, IL · 61938

217-234-6481

Heather R Hodge

Reg. 41841

Patent attorney

GE Commercial Distribution Finance Corporation

Hoffman Estates, IL · 60192

847-747-7546

Timothy E Hoerman

Reg. 42662

Patent attorney

Timothy E. Hoerman, Ltd.

Westmont, IL · 60559

630-442-1923

James Michael Hoey

Reg. 28858

Patent attorney

Clausen Miller PC - Law Firm

Chicago, IL · 60603

312-606-7493

Roy Ellis Hofer

Reg. 19391

Patent attorney

Law Offices Of Roy E.Hofer

Burr Ridge, IL · 60527

630-581-5587

Perry Jay Hoffman

Reg. 37150

Patent attorney

Perry Hoffman & Associates, P.C.

Deerfield, IL · 60015

847-809-4285

Richard Bruce Hoffman

Reg. 26910

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6300

S David Hoffman

Reg. 22039

Patent attorney

Highland Park, IL · 60035

847-432-8378

Todd Steven Hofmeister

Reg. 53029

Patent attorney

Michael Best & Friedrich LLP

Chicago, IL · 60606

312-596-5800

Valerie N Hogan

Reg. 63936

Patent attorney

Itasca, IL · 60143

Kevin David Hogg

Reg. 31839

Patent attorney

Marshall Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6300

Cory L. Hojka

Reg. 70987

Patent attorney

Riverside, IL · 60546

312-505-0461

Antonia M Holland

Reg. 53840

Patent attorney

AbbVie Inc.

North Chicago, IL · 60064

847-938-9323

Amanda Hollis

Reg. 55629

Patent attorney

Kirkland & Ellis LLP

Chicago, IL · 60654

312-862-2000

Trey L. Holloway

Reg. 79888

Patent agent

Chicago, IL · 60613

806-679-4874

Paul G Holly

Reg. 72335

Patent attorney

Holly Patent Law LLC

Chicago, IL · 60631

312-535-4810

Jennifer L Holmes

Reg. 47659

Patent attorney

Miller, Matthias & Hull

Chicago, IL · 60606

312-977-9902

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.