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 Marshall, Gerstein & Borun LLP, Banner & Witcoff, and Arch & Lake LLP.

Leon M. Cao

Reg. 83952

Patent attorney

Banner & Witcoff

Chicago, IL · 60606

312-463-5461

Yichen Cao

Reg. 73489

Patent attorney

Arch & Lake LLP

Chicago, IL · 60601

630-386-5514

Christopher V Carani

Reg. 44049

Patent attorney

McAndrews Held & Malloy, Ltd.

Chicago, IL · 60661

312-775-8000

Matthew R. Carey

Reg. 61082

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6300

Benjamin E Carlsen

Reg. 52697

Patent agent

Carlsen Law Office

Chicago, IL · 60645

773-576-9328

John A Carnahan

Reg. 44592

Patent attorney

Husch Blackwell Sanders LLP

Chicago, IL · 60606

312-655-1500

Michael A Carrillo

Reg. 44595

Patent attorney

Barnes & Thornburg LLP

Chicago, IL · 60690-2786

312-356-1313

William A. Carroll

Reg. 61795

Patent attorney

Chicago, IL · 60606

312-222-0800

Michael J Carrozza

Reg. 66980

Patent attorney

McAndrews, Held & Malloy Ltd.

Chicago, IL · 60661

312-775-8000

Carla E Carter

Reg. 52678

Patent agent

Law Office of Carla E. Buterman, LLC

Chicago, IL · 60604

312-957-8585

Michael W. Carwin

Reg. 73066

Patent attorney

Armstrong Teasdale LLP

Chicago, IL · 60606

312-516-5625

Gregory P Casimer

Reg. 78719

Patent attorney

ThorellI & Associates

Chicago, IL · 60602

312-357-0300

William J Cassin

Reg. 65192

Patent attorney

Benesch Friedlander Coplan & Aronoff LLP

Chicago, IL · 60606

312-517-9542

Marc A Cavan

Reg. 51537

Patent attorney

Baker & McKenzie, LLP

Chicago, IL · 60601

312-861-7972

Rebecca M Cavin

Reg. 68444

Patent attorney

K & L Gates LLP

Chicago, IL · 60602

312-807-4239

Richard Alan Cederoth

Reg. 31336

Patent attorney

Sidley Austin

Chicago, IL · 60603

312-853-7000

Talivaldis Cepuritis

Reg. 20818

Patent attorney

Olson & Cepuritis, Ltd.

Chicago, IL · 60606

312-580-1180

Julius C. Chai

Reg. 84334

Patent agent

Chicago, IL · 60661

407-280-2371

Jagriti R Chander

Reg. 46610

Patent agent

Chicago, IL · 60640

773-275-1825

Paul A Chandler

Reg. 40553

Patent attorney

Mayer Brown Rowe & Mau, LLP

Chicago, IL · 60603

312-701-8499

James A. Chard

Reg. 84252

Patent attorney

Foley & Lardner LLP

Chicago, IL · 60654

817-821-7248

Brent A Chatham

Reg. 73954

Patent attorney

Leydig, Voit & Mayer, Ltd.

Chicago, IL · 60601-6731

312-616-5600

Daniel T. Chavka

Reg. 61192

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6300

Jeffrey Alan Chelstrom

Reg. 57915

Patent attorney

Honigman LLP

Chicago, IL · 60606-1734

312-701-9300

An-Tzyr Amy Chen

Reg. 55885

Patent agent

Chicago, IL · 60640

773-293-1498

Angie A. Chen

Reg. 68492

Patent attorney

Chicago, IL · 60613

773-837-3281

Gang Chen

Reg. 68754

Patent agent

Crowell & Moring LLP

Chicago, IL · 60611

312-840-3263

Jun Chen

Reg. 77811

Patent attorney

Venture Partner, LLC

Chicago, IL · 60611

812-325-2116

Kyle Yikai Chen

Reg. 76704

Patent attorney

JPMorgan Chase Bank, N.A.

Chicago, IL · 60603

312-336-2379

McKenzie J Chen

Reg. 79222

Patent agent

Perkins Coie, LLP

Chicago, IL · 60610-1511

312-324-8695

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.