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 Baxter Healthcare Corporation, Barnes & Thornburg LLP, and Morgan Lewis & Bockius LLP.

Top cities in Illinois

All practitioners in Illinois

Lisa M Seaney

Reg. 56246

Patent agent

Barnes & Thornburg LLP

Chicago, IL · 60606

312-338-5935

Lauren M. Segal

Reg. 80473

Patent agent

Morgan Lewis & Bockius LLP

Chicago, IL · 60602

312-324-1000

Philip D Segrest

Reg. 39021

Patent attorney

Husch Blackwell Sanders LLP

Chicago, IL · 60606

312-655-1500

Chika Sakamoto Seidel

Reg. 65400

Patent attorney

Astellas US LLC

Northbrook, IL · 60062

800-727-7003

Timothy K Sendek

Reg. 64542

Patent attorney

Akerman LLP

Chicago, IL · 60606

312-870-8007

Nicholas L. Seneczko

Reg. 83171

Patent agent

Arlington Heights, IL · 60004

847-770-5857

Joy Ann Gloria Serauskas

Reg. 27952

Patent agent

Lincolnshire, IL · 60069

847-945-2169

Lisa J Serdynski

Reg. 40307

Patent attorney

SRAM, LLC

Chicago, IL · 60607

312-664-3652

Bayarjargal T. Sereenen

Reg. 71550

Patent attorney

TSEGTS LAW GROUP LLC

Naperville, IL · 60540

773-387-7901

Denise M Serewicz

Reg. 36928

Patent attorney

Baxter Healthcare Corporation

Deerfield, IL · 60015

847-948-3881

Marcus E Sernel

Reg. 55606

Patent attorney

Kirkland & Ellis LLP

Chicago, IL · 60654

312-862-2000

William Kryl Serp

Reg. 22493

Patent attorney

Western Springs, IL · 60558

708-246-7856

Squire J Servance

Reg. 65135

Patent attorney

Baxter Healthcare Corporation

Chicago, IL · 60015

224-948-6524

Todd N Severns

Reg. 68623

Patent attorney

Geneva, IL · 60134

630-901-0645

Fei Sha

Reg. 84220

Patent attorney

Chicago, IL · 60601

312-819-9770

Jie Sha

Reg. 37503

Patent attorney

Chiwin Law LLC

Chicago, IL · 60601

312-819-9770

Charulata J. Shah

Reg. 47681

Patent attorney

Accenture

Chicago, IL · 60606

312-693-4487

Kalpesh K Shah

Reg. 48387

Patent attorney

Benesch Friedlander Coplan & Aronoff LLP

Chicago, IL · 60606

312-212-4979

Khushal H. Shah

Reg. 81799

Patent agent

Hoffman Estates, IL · 60192

224-402-5107

Manshi K Shah

Reg. 61499

Patent attorney

Lake Worth, IL · 33467

561-707-1835

Shital A Shah

Reg. 47073

Patent attorney

Caterpillar Inc.

Peoria, IL · 61629

309-636-1127

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

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.