Chicago, Illinois

Patent attorneys in Chicago

Chicago, Illinois is home to 1,862 USPTO-registered patent practitioners. Working with a local practitioner can streamline in-person meetings for invention disclosures, signing inventor declarations, and reviewing prior-art search results — but every USPTO practitioner is licensed to practice nationally, so a non-local choice is also valid. Local firms with the most USPTO-registered practitioners include Arch & Lake LLP, Cook County States Attorneys Office, and McDonnell Boehnen Hulbert & Berghoff LLP.

Mitchell J Levin

Reg. 51940

Patent attorney

Cook County States Attorneys Office

Chicago, IL · 60602

312-603-8626

Yuri Z Levin-Schwartz

Reg. 82477

Patent attorney

McDonnell Boehnen Hulbert & Berghoff LLP

Chicago, IL · 60606

312-913-0001

Russell Evan Levine

Reg. 32153

Patent attorney

Kirkland & Ellis LLP

Chicago, IL · 60654

312-862-2466

Cary Alan Levitt

Reg. 31848

Patent attorney

Dennemeyer & Co. LLC

Chicago, IL · 60602

312-340-9223

Timothy Emil Levstik

Reg. 30192

Patent attorney

Fitch, Even, Tabin & Flannery, LLP

Chicago, IL · 60603-3406

312-577-7000

Douglas I Lewis

Reg. 39748

Patent attorney

Kelley Drye & Warren LLP

Chicago, IL · 60606

312-857-7073

Chen Li

Reg. 800025

Limited recognition

Arch & Lake LLP

Chicago, IL · 60601

312-558-1369

Hao Li

Reg. 800041

Limited recognition

Arch & Lake LLP

Chicago, IL · 60601

312-558-1369

Xiaojing Li

Reg. 74503

Patent agent

Chicago, IL · 60653

614-886-1266

Jamie E Liebert

Reg. 73224

Patent attorney

Ropes & Gray LLP

Chicago, IL · 60610

312-845-1338

Benjamin Lieu

Reg. 83127

Patent attorney

CME Group

Chicago, IL · 60606

708-553-5994

David P Lindner

Reg. 53222

Patent attorney

Crowell & Moring LLP

Chicago, IL · 60611-5599

312-222-8123

Erica D. Lindsay

Reg. 73437

Patent attorney

Lindsay Law, LLC

Chicago, IL · 60615

312-380-1618

John R Linzer

Reg. 56972

Patent attorney

Quarles & Brady LLP

Chicago, IL · 60606

312-715-5059

Isabel Victoria Kats Liokumovich

Reg. 84633

Patent agent

Chicago, IL · 60607

847-922-6695

Peter J. Lish

Reg. 59383

Patent attorney

McAndrews, Held & Malloy LTD

Chicago, IL · 60661

312-775-8000

Adam V. Litteken

Reg. 72076

Patent attorney

Ladas & Parry LLP

Chicago, IL · 60604

312-427-1300

Benjamin P Liu

Reg. 61703

Patent attorney

Chicago, IL · 60637

857-389-1039

Dan Liu

Reg. 78847

Patent attorney

Crowell & Morning LLP

Chicago, IL · 60611

312-840-3267

Guoquan Liu

Reg. 67514

Patent agent

Department of Pharmacology

Chicago, IL · 60612

Kevin B Liu

Reg. 77002

Patent attorney

Leydig, Voit & Mayer

Chicago, IL · 60601

312-616-5606

Shuang Liu

Reg. L1405

Limited recognition

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-423-3457

Yonglin Liu

Reg. 68710

Patent agent

K&L Gates LLP

Chicago, IL · 60602

312-807-4316

Justin R. Lizalek

Reg. 82684

Patent attorney

Hanley, Flight & Zimmerman, LLC

Chicago, IL · 60606

312-676-1746

Wanshon Lo

Reg. 71076

Patent attorney

Morgan, Lewis & Bockius LLP

Chicago, IL · 60606

312-324-1742

Matthew E. Loar

Reg. 84550

Patent attorney

Loar Law

Chicago, IL · 60606

224-434-5627

Eric L Lohrenz

Reg. 46016

Patent attorney

Jenner & Block, LLP

Chicago, IL · 60654-3456

312-923-8313

Ronan P Lonergan

Reg. 78665

Patent agent

Banner & Witcoff, Ltd.

Chicago, IL · 60606

312-463-5484

Lauren N. Long

Reg. 81364

Patent agent

Foley & Lardner

Chicago, IL · 60611

630-240-2216

Bradley P. Loren

Reg. 82885

Patent attorney

McAndrews, Held & Malloy

Chicago, IL · 60661

312-775-8009

Common questions

Do patent attorneys in Chicago cost more than the national average?

Patent attorney fees vary primarily by experience and complexity of the invention, not by city. A typical provisional patent application in the US runs $1,500 to $5,000; a non-provisional utility filing runs $5,000 to $15,000. Hourly rates in Chicago tend to track the broader Illinois legal market.

How many USPTO practitioners list a Chicago office?

1,862 USPTO-registered patent practitioners list a Chicago mailing address on the OEDCI roster. You can sort by firm size and contact each directly using the phone numbers shown.

Can I work with a Chicago practitioner remotely?

Yes. All filings happen through USPTO's electronic Patent Center — no in-person presence is required. A Chicago-based practitioner is convenient for local inventor signings and in-person meetings but not a requirement for representation.