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 Ice Miller LLP, Schoenberg Finkel Newman and Rosenberg LTC, and Cboe Global Markets, Inc..

Top cities in Illinois

All practitioners in Illinois

Damon G Newman

Reg. 73629

Patent attorney

Chicago, IL · 60640

773-439-0271

Gerald M Newman

Reg. 24024

Patent attorney

Schoenberg Finkel Newman and Rosenberg LTC

Chicago, IL · 60606

312-648-2300

Jordan A Newmark

Reg. 50904

Patent agent

Cboe Global Markets, Inc.

Chicago, IL · 60605

312-786-7344

Valerie R Neymeyer-Tynkov

Reg. 46956

Patent attorney

Positive Patents LLC

Chicago, IL · 60602

131-296-51969

Ngoc-Tram H Nguyen

Reg. 902884

Limited recognition

Northwestern Pritzker School of Law

Chicago, IL · 60611

952-457-6428

Sao Mai Nguyen-Mau

Reg. 77925

Patent agent

Chicago, IL · 60606

872-221-2833

Sharon K. Ngwenya

Reg. 81320

Patent agent

Klintworth & Rozenblat LLP

Chicago, IL · 60612-1577

678-438-3850

Sarfaraz K Niazi

Reg. 52067

Patent agent

Pharmaceutical Scientist Inc.

Deerfield, IL · 60015

312-297-0000

Frank C Nicholas

Reg. 33983

Patent attorney

Cardinal Law GRP

Evanston, IL · 60201

847-424-2521

G Peter Nichols

Reg. 34401

Patent attorney

Barnes & Thornburg LLP

Chicago, IL · 60606-2833

312-214-4832

Jeffrey Clyde Nichols

Reg. 36879

Patent attorney

Baxter Healthcare Corporation

Deerfield, IL · 60015

224-948-4922

Jeffry M Nichols

Reg. 46958

Patent attorney

Crowell & Moring

Chicago, IL · 60611

312-321-4200

Matthew C Nielsen

Reg. 51106

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6300

Vivien Chen Nielsen

Reg. 62514

Patent attorney

Astellas US LLC

Northbrook, IL · 60026

224-205-5225

Allan J. Niemerg

Reg. 61655

Patent attorney

Richards Patent Law

Chicago, IL · 60606

312-613-9416

Peter D Nigrelli

Reg. 66461

Patent agent

Banner & Witcoff, Ltd.

Chicago, IL · 60606

312-463-5425

Andrew F Nilles

Reg. 47825

Patent attorney

Archer Daniels Midland Company

Decatur, IL · 62526

217-451-2777

Anthony Nimmo

Reg. 30920

Patent attorney

Ice Miller LLP

Chicago, IL · 60606

312-726-8149

Jack David Nimz

Reg. 35301

Patent attorney

Navistar, Inc.

Lisle, IL · 60532

331-332-2172

Dean Douglas Niro

Reg. 36881

Patent attorney

Vitale, Vickrey, Niro, Solon & Gasey LLP

Chicago, IL · 60606

312-236-0733

Charles Nissim-Sabat

Reg. 42037

Patent attorney

Cherskov and Flavnik

Chicago, IL · 60602

312-621-1330

Timothy M Nitsch

Reg. 58019

Patent attorney

KCO Legal, Inc

Naperville, IL · 60540

630-696-1361

Brian T Noack

Reg. 72225

Patent attorney

Wolek & Noack

Chicago, IL · 60606

239-671-1103

Greta E Noland

Reg. 35302

Patent agent

Marshall, Gerstein & Borun, LLP

Chicago, IL · 60606

312-474-6300

Steven H Noll

Reg. 28982

Patent attorney

Schiff Hardin LLP

Chicago, IL · 60606

312-258-5790

Kevin Edward Noonan

Reg. 35303

Patent attorney

McDonnell Boehnen Hulbert & Berghoff, LLP

Chicago, IL · 60606

312-913-0001

Mohamed Yasaa Noorani

Reg. 71263

Patent attorney

Noorani & Villar P.C.

Schamburg, IL · 60173

847-592-6221

Roland Wayne Norris

Reg. 32799

Patent attorney

Wheaton, IL · 60189

630-890-3254

Natalie Northup

Reg. 80492

Patent attorney

Ice Miller LLP

Chicago, IL · 60606

312-726-6280

Edward E Northway· II

Reg. 50818

Patent agent

Valspar Corporation

Lake Forest, IL · 60045

847-362-3795

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.