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 Leydig, Voit & Mayer, Ltd., Fitch, Even, Tabin & Flannery LLP, and Greer, Burns & Crain.

Patrick J. Smith

Reg. 65626

Patent attorney

Greer, Burns & Crain

Chicago, IL · 60606

312-987-2927

Stephen C Smith

Reg. 56250

Patent attorney

Barnes & Thornburg

Chicago, IL · 60606

312-214-2112

Troy D Smith

Reg. 62349

Patent attorney

Freeborn & Peters

Chicago, IL · 60305

312-360-6926

Evan M Smola

Reg. 59475

Patent agent

Chicago, IL · 60611

770-841-5792

Vincent M Smolczynski

Reg. 68067

Patent attorney

Seyfarth Shaw LLP

Chicago, IL · 60607

312-460-5532

Zachary J Smolinski

Reg. 47100

Patent attorney

Smolinski Rosario Law P.C.

Chicago, IL · 60602

312-282-7263

Maxwell B Snow

Reg. 74357

Patent attorney

Leydig, Voit & Mayer, Ltd.

Chicago, IL · 60601

312-616-5700

James R Sobieraj

Reg. 30805

Patent attorney

Chicago, IL · 60610

312-321-4200

Brian J Sodikoff

Reg. 54697

Patent attorney

Katten Muchin Rosenman, LLP

Chicago, IL · 60661

312-902-5462

Jennifer L. Soerensen

Reg. 78895

Patent agent

Fitch Even Tobin & Flannery, LLP

Chicago, IL · 60603

312-577-7000

Daniel Sokoloff

Reg. 78516

Patent attorney

Rakoczy Molino Mazzochi Siwik LLP

Chicago, IL · 60654

312-222-7207

Hyojeong Son

Reg. 82325

Patent attorney

Fitch, Even, Tabin & Flannery LLP

Chicago, IL · 60603

312-577-7000

Viren S Soni

Reg. 65824

Patent attorney

CME Group

Chicago, IL · 60606

312-338-2823

Leonard S Sorgi

Reg. 33211

Patent attorney

Chicago, IL · 60640

917-848-0525

Elias P Soupos

Reg. 57375

Patent attorney

Fitch, Even, Tabin & Flannery LLP

Chicago, IL · 60603

312-629-7908

Sean C. Sparrow

Reg. 76482

Patent attorney

McAndrews, Held & Malloy, LTD.

Chicago, IL · 60661

847-668-7873

Nicholas J R Spear

Reg. 69328

Patent attorney

Grossman Law Office

Chicago, IL · 60606

612-621-9000

William C Spence

Reg. 48186

Patent attorney

SpencePC

Chicago, IL · 60654

312-404-8882

Milena J Spencer

Reg. 70274

Patent attorney

Chicago, IL · 60614

847-287-5428

Jonathan M Spenner

Reg. 57268

Patent attorney

Leydig, Voit & Mayer, Ltd.

Chicago, IL · 60601-6731

312-616-5600

Kenneth P Spina

Reg. 43927

Patent attorney

Leydig Voit and Mayer, Ltd.

Chicago, IL · 60601-6780

312-616-5600

Andrew M. Spitzer

Reg. 79411

Patent agent

Chicago, IL · 60610

Ronald H Spuhler

Reg. 52245

Patent attorney

McAndrews Held and Malloy LTD

Chicago, IL · 60661

312-775-8000

Caleb R. St.-Jean

Reg. 73676

Patent attorney

The Law Office of Caleb St.-Jean

Chicago, IL · 60640

312-550-5018

Theresa R. Stadheim

Reg. 67464

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606-6357

612-743-4498

Colin J Stalter

Reg. 78221

Patent attorney

Gerasimow Law

Chicago, IL · 60654

815-298-0868

Michael S Stanko

Reg. 63846

Patent agent

Chicago, IL · 60614

402-770-8655

Gregory E Stanton

Reg. 45127

Patent attorney

Lempia Summerfield Katz LLC

Chicago, IL · 60603

312-854-8389

James G Staples

Reg. 19013

Patent attorney

A Finkl and Sons CO

Chicago, IL · 60619

773-975-2235

Paul R Steadman

Reg. 43932

Patent attorney

DLA PIPER LLP (US)

Chicago, IL · 60601

312-368-2135

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.