Chicago, Illinois

Patent attorneys in Chicago

Chicago, Illinois is home to 1,891 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, Freeborn & Peters, LLP, and Crowell & Moring.

Julie A. Fischer

Reg. 81577

Patent agent

Chicago, IL · 60657

262-527-1502

Ryan J Fischer

Reg. 55180

Patent agent

Chicago, IL · 60625

760-492-7797

Jennifer L Fitzgerald

Reg. 39976

Patent attorney

Freeborn & Peters, LLP

Chicago, IL · 60606

312-360-6585

Ryan T. Fitzgerald

Reg. 79303

Patent attorney

Crowell & Moring

Chicago, IL · 60611

312-321-4200

Katherine J Fitzpatrick

Reg. 61596

Patent attorney

WM. Wrigley Jr. Company

Chicago, IL · 60642

312-794-6245

Thomas R Fitzsimons

Reg. 40607

Patent attorney

Greer Burns and Crain, Ltd.

Chicago, IL · 60606

312-360-0080

Gianna Pauline Flammini

Reg. 902872

Limited recognition

Northwestern Pritzker School of Law

Chicago, IL · 60611

217-481-5655

John Francis Flannery

Reg. 19759

Patent attorney

Fitch, Even, Tabin, & Flannery, LLP

Chicago, IL · 60603-3406

312-577-7000

Michael H Fleck

Reg. 70958

Patent attorney

Riley Safer Holmes & Cancila LLP

Chicago, IL · 60603

312-471-8766

Margaret R. Fleetwood

Reg. 70876

Patent attorney

Chroma Medicine, Inc.

Chicago, IL · 02215

708-601-0767

Zareefa B Flener

Reg. 52896

Patent attorney

Flener IP Law

Chicago, IL · 60602

312-724-8874

Joseph W Flerlage

Reg. 52897

Patent attorney

Trading Technologies International, Inc

Chicago, IL · 60606

312-476-1000

James A Flight

Reg. 37622

Patent attorney

Hanley, Flight & Zimmerman, LLC

Chicago, IL · 60606

312-580-1020

Erik B Flom

Reg. 41021

Patent attorney

Chicago, IL · 60616

312-949-9544

Jacob R. Florsheim

Reg. 83330

Patent agent

Foley & Lardner LLP

Chicago, IL · 60654

312-832-4314

Kevin M Flowers

Reg. 44684

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6300

Louis E Fogel

Reg. 54731

Patent attorney

Fish & Richardson PC

Chicago, IL · 60606

612-335-5070

James R Foley

Reg. 39979

Patent attorney

Clark Hill PLC

Chicago, IL · 60601

312-985-5900

James K Folker

Reg. 37538

Patent attorney

Greer Burns and Crain, LTD

Chicago, IL · 60606

312-360-0080

James T. Fondriest

Reg. 68152

Patent agent

The Kraft Heinz Company

Chicago, IL · 60601

847-646-3016

Joseph J. Forchetti

Reg. 82657

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606-6357

312-423-3473

Kyle A Forgue

Reg. 71457

Patent attorney

Barnes & Thornburg LLP

Chicago, IL · 60606

312-214-4841

Sydney N. Forsander

Reg. 81199

Patent attorney

Husch Blackwell LLP

Chicago, IL · 60606

312-985-8257

George W. Foster

Reg. 74781

Patent attorney

Kirkland & Ellis LLP

Chicago, IL · 60654

630-677-6098

Trevor J C Foster

Reg. 80560

Patent attorney

Quarles & Brady LLP

Chicago, IL · 60654

312-715-5017

Dant T Foulk

Reg. 52907

Patent attorney

Chicago, IL · 60613

773-549-4610

David Brian Fournier

Reg. 51696

Patent attorney

Perkins Coie LLP

Chicago, IL · 60603-5559

312-324-8643

Deirdre A Fox

Reg. 59687

Patent attorney

Chicago, IL · 60611

312-335-0591

Katherine J Fox

Reg. 74613

Patent attorney

Chicago, IL · 60618

702-379-7235

Jonathan M Francis

Reg. 72479

Patent attorney

Law Office of Jonathan M Francis

Chicago, IL · 60647

312-834-4170

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?

1,891 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.