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 Arnold & Porter Kaye Scholer LLP, Sysmex America, Inc., and McDonnell Boehnen Hulbert & Berghoff LLP.

Top cities in Illinois

All practitioners in Illinois

Helen A Reetz

Reg. 39003

Patent attorney

Sysmex America, Inc.

Lincolnshire, IL · 60069

224-543-9406

Thomas A Reichert

Reg. 77326

Patent agent

Marion, IL · 62959

309-299-2431

Patrick C. Reidy

Reg. 72148

Patent attorney

Arnold & Porter Kaye Scholer LLP

Chicago, IL · 60602

312-583-2424

Nicole E. Reifman

Reg. 58792

Patent attorney

McDonnell Boehnen Hulbert & Berghoff LLP

Chicago, IL · 60606

312-913-0001

Theodore G. Reimann

Reg. 81972

Patent agent

Foley & Lardner LLP

Chicago, IL · 60654

312-832-4577

Susan Deborah Reinecke

Reg. 40198

Patent attorney

Michael Best & Friedrich LLP

Chicago, IL · 60611

312-222-0800

Pauls E Reinfelds

Reg. 64539

Patent attorney

Marathon Pharmaceuticals, LLC

Northbrook, IL · 60062

847-715-0607

Irene M Reininger

Reg. 48439

Patent attorney

Abbott Park, IL · 60064-6008

847-938-3797

Benjamin A. Rellinger

Reg. 73538

Patent agent

McDonnell, Boehnen, Hulbert & Berghoff LLP

Chicago, IL · 60606

312-913-3399

Matthew M Remissong

Reg. 69484

Patent attorney

Invention Mine LLC

Chicago, IL · 60661

312-585-7909

Edward Walter Remus

Reg. 25703

Patent attorney

Edward W. Remus

Geneva, IL · 60134

630-262-1366

Mark Herbert Remus

Reg. 40141

Patent attorney

Crowell & Moring

Chicago, IL · 60611

312-321-4720

Christopher J Renk

Reg. 33761

Patent attorney

Arnold & Porter Kaye Scholer LLP

Chicago, IL · 60602-4231

312-583-2300

Robert H Resis

Reg. 32168

Patent attorney

Banner and Witcoff, Ltd.

Chicago, IL · 60606

312-463-5000

Nicholas A Restauri

Reg. 71783

Patent attorney

Morgan Lewis & Bockius LLP

Chicago, IL · 60601

312-324-1000

Jonathan Eli Retsky

Reg. 34415

Patent attorney

Bryan Cave Leighton Paisner LLP

Chicago, IL · 60601

312-602-5000

Christopher A Reyes

Reg. 65131

Patent agent

Chicago, IL · 60655

773-679-8741

Steven J Reynolds

Reg. 61445

Patent attorney

DLA Piper US, LLP

Chicago, IL · 60601

312-368-4000

Roy B Rhee

Reg. 57303

Patent agent

Roy B. Rhee

Northbrook, IL · 60065

224-616-2828

Kathleen Ann Rheintgen

Reg. 34044

Patent attorney

Husch Blackwell Sanders LLP

Chicago, IL · 60606

312-526-1599

Jared T. Rhiner

Reg. 82469

Patent attorney

Kirkland & Ellis LLP

Chicago, IL · 60654

312-862-4647

Katherine E. Rhoades

Reg. 75109

Patent attorney

Bartlit Beck LLP

Chicago, IL · 60654

312-494-4472

James A Rhoads

Reg. 39344

Patent agent

Abbott Molecular Inc.

Des Plaines, IL · 60018

224-361-7271

Curtis P Ribando

Reg. 27976

Patent agent

Peoria, IL · 61615

309-692-6525

Anthony L. Ricamato

Reg. 71635

Patent agent

GE Healthcare

Barrington, IL · 60010

312-860-2526

John C. Ricci

Reg. 83337

Patent attorney

O'Flaherty Law

Naperville, IL · 60563

407-797-9581

Joshua Reuben Rich

Reg. 41269

Patent attorney

Lippes Mathias LLP

Chicago, IL · 60604

872-254-5500

Marc V Richards

Reg. 37921

Patent attorney

Crowell & Moring LLP

Chicago, IL · 60611

312-321-4729

Patrick Duffy Richards

Reg. 48905

Patent attorney

Much Shelist PC

Chicago, IL · 60606

312-521-2774

Scott Charles Richardson

Reg. 43436

Patent attorney

The Brevetto Law Group, PLLC

Quincy, IL · 62301-0808

571-748-6200

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.