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 Taff Stettinius & Hollister LLP, Wood, Phillips, Katz, Clark & Mortimer, and Shams, Rodriguez & Mozwecz, P.C..

Top cities in Illinois

All practitioners in Illinois

Vikas P. Shah

Reg. 62679

Patent attorney

Taff Stettinius & Hollister LLP

Chicago, IL · 60601

847-668-6981

Peter J Shakula· II

Reg. 40808

Patent attorney

Wood, Phillips, Katz, Clark & Mortimer

Chicago, IL · 60661

312-876-1800

Adnan A Shams

Reg. 61602

Patent attorney

Shams, Rodriguez & Mozwecz, P.C.

Chicago, IL · 60601

312-564-5757

Lance M Shaner

Reg. 66871

Patent attorney

Marshall Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6300

Sherwin S Shang

Reg. 54440

Patent agent

Baxter Healthcare CORP

Vernon Hills, IL · 60061

847-473-6318

Luke T Shannon

Reg. 60878

Patent attorney

Taft

Chicago, IL · 60601

312-339-5034

Steven M Shape

Reg. 30802

Patent attorney

Omnus Law

Lake Forest, IL · 60045

847-971-4310

Christina E. Sharkey

Reg. 72703

Patent attorney

Quinn Emanuel Urquhart & Sullivan LLP

Chicago, IL · 60606

814-404-7972

Jeffrey Smith Sharp

Reg. 31879

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6300

Stephen J Shaw

Reg. 56442

Patent attorney

Chamberlain Group

Oak Brook, IL · 60523

415-857-5999

Rory P Shea

Reg. 60529

Patent attorney

Lee Sullivan Shea & Smith LLP

Chicago, IL · 60661

312-754-9609

Daniel R Shearer

Reg. 75905

Patent agent

Chicago, IL · 60657

585-217-3750

Alexander P. Sheehan

Reg. 82507

Patent agent

Lockport, IL · 60441

708-267-0616

Gerald Thomas Shekleton

Reg. 27466

Patent attorney

Husch Blackwell Sanders LLP

Chicago, IL · 60606

312-655-1500

Stephen L Sheldon

Reg. 58732

Patent attorney

Molex, LLC

Lisle, IL · 60532

630-527-4336

Jeffrey D Shelley

Reg. 66622

Patent attorney

Sugar Felsenthal Grais & Hammer LLP

Chicago, IL · 60602

312-704-2175

Amir M. Shenouda

Reg. 67838

Patent attorney

McDonnell Boehnen Hulbert & Berghoff LLP

Chicago, IL · 60606-6709

312-913-3359

John Christopher Shepard

Reg. 28345

Patent attorney

Winnetka, IL · 60093-4018

847-965-8660

Berton Scott Sheppard

Reg. 20922

Patent attorney

Leydig Voit and Mayer LTD

Chicago, IL · 60601

312-616-5600

Philip Henry Sheridan

Reg. 59918

Patent attorney

McAndrews, Held & Malloy, Ltd.

Chicago, IL · 60661

312-775-8000

Konrad V Sherinian

Reg. 55612

Patent attorney

The Law Office of Konrad Sherinian, LLC

Naperville, IL · 60563

630-318-2606

Jacob S Sherkow

Reg. 77234

Patent attorney

University of Illinois College of Law

Champaign, IL · 61820

217-333-0931

Joseph B. Sherling

Reg. 79824

Patent agent

Neal Gerber & Eisenberg LLP

Chicago, IL · 60602

312-269-8423

Scott A. Shermetaro

Reg. 74339

Patent attorney

Kirkland & Ellis LLP

Chicago, IL · 60654

312-956-4758

Adrian B. Sherrill

Reg. 66341

Patent attorney

Palatine, IL · 60067

503-889-6854

Stephen Francis Sherry

Reg. 30590

Patent attorney

McAndrews Held and Malloy, Ltd.

Chicago, IL · 60661

312-775-8124

Owen Shi

Reg. 84272

Patent agent

Normal, IL · 61761

309-660-0309

Yunan Shi

Reg. 800177

Limited recognition

McDonnell, Boehnen, Hulbert & Berghoff

Chicago, IL · 60606

312-913-0001

Jennifer M Shield

Reg. 74157

Patent attorney

Amin Talati & Upadhye

Chicago, IL · 60603

312-327-3383

Charles W Shifley

Reg. 28042

Patent attorney

Banner & Witcoff LTD

Chicago, IL · 60606

312-463-5000

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.