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 Husch Blackwell Sanders LLP, Kirkland & Ellis LLP, and Bartlit Beck LLP.

Top cities in Illinois

All practitioners in Illinois

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

Cole Bradley Richter

Reg. 65398

Patent attorney

Lee Sullivan Shea & Smith LLP

Chicago, IL · 60661

312-754-9602

Raymond R Ricordati· III

Reg. 62856

Patent attorney

Marshall Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6617

Matthew T Ridsdale

Reg. 56832

Patent attorney

McDonnell Boehnen Hulbert & Berghoff LLP

Chicago, IL · 60606

312-913-0001

Sarah L. Riess

Reg. 67256

Patent agent

Hawthorn Woods, IL · 60047

847-691-6443

Kurt C. Riester

Reg. 75987

Patent attorney

Abbott Laboratories

Abbott Park, IL · 60064

224-667-6100

Robert S Rigg

Reg. 36991

Patent attorney

Vedder Price PC

Chicago, IL · 60601

312-609-7500

Charles T Riggs· Jr

Reg. 37430

Patent attorney

The Law Office of Charles Y. Riggs Jr.

River Forest, IL · 60605

708-828-6130

Thomas P Riley

Reg. 50556

Patent attorney

Riley Intellectual Property Law, LLC

Chicago, IL · 60601

312-766-3715

Li-Hsien Rin-Laures

Reg. 33547

Patent attorney

RinLaures LLC

Chicago, IL · 60654

773-387-3200

Thomas John Ring

Reg. 29971

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6618

Paul J Ripp

Reg. 54400

Patent attorney

Chicago, IL · 60613

773-404-0847

Thomas W Ritchie

Reg. 65505

Patent attorney

Ritchie Law

Chicago, IL · 60611

847-477-5615

Mindy N Rittner

Reg. 57803

Patent agent

Brinks Gilson & Lione

Chicago, IL · 60611

312-321-4200

Jonathan M. Rixen

Reg. 57689

Patent attorney

Dennemeyer & Associates LLC

Chicago, IL · 60606

312-866-6235

Derek Adam Roach

Reg. 46156

Patent attorney

McGuire Woods LLP

Chicago, IL · 60601

312-321-7683

Keith Patrick Roberson

Reg. 43885

Patent attorney

Caterpillar Inc.

Peoria, IL · 61629-3410

309-675-4423

Evan Dale Roberts

Reg. 18981

Patent attorney

Peotone, IL · 60468

708-258-6318

Mark Wayne Roberts

Reg. 46160

Patent attorney

Archer Daniels Midland Company

Decatur, IL · 62526

217-451-3170

Joy C. Robinson

Reg. 72450

Patent attorney

Chicago, IL · 60640

515--57-7-7487

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.