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, Quarles & Brady LLP, and Levenfeld Pearlstein, LLC.

Michael T. Paull

Reg. 84145

Patent agent

Quarles & Brady LLP

Chicago, IL · 60606

312-715-5260

George S Pavlik

Reg. 55528

Patent attorney

Levenfeld Pearlstein, LLC

Chicago, IL · 60606

312-346-8380

Hiram R Peacock

Reg. 53445

Patent attorney

Chicago, IL · 60628

773-960-1126

Dean Andrew Pelletier

Reg. 45007

Patent attorney

Chicago, IL · 60614

Lynn Q Peng

Reg. 69755

Patent attorney

Workiva, Inc.

Chicago, IL · 60603

312-631-7804

Amir N Penn

Reg. 40767

Patent attorney

Lempia Summerfield Katz LLC

Chicago, IL · 60603

312-291-0860

Michael Charles Penn

Reg. 35640

Patent attorney

John Bean Technologies Corporation

Chicago, IL · 60602

312-861-6012

Alexander D. Penne

Reg. 83685

Patent agent

Chicago, IL · 60611

919-698-2355

Rachel Sue Pennington

Reg. 48391

Patent attorney

McDermott Will & Emery

Chicago, IL · 60606

312-984-7601

Venkatram Pepakayala

Reg. L1252

Limited recognition

Banner & Witcoff, Ltd.

Chicago, IL · 60606

312-463-5475

Ethan R Perbohner

Reg. 78356

Patent agent

Kirkland & Ellis LLP

Chicago, IL · 60654

815-347-3957

James T. Peterka

Reg. 59186

Patent attorney

Locke Lord LLP

Chicago, IL · 60606-4410

312-443-0270

Aaron Michael Peters

Reg. 48801

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6300

Grant Henry Peters

Reg. 35977

Patent attorney

Barnes & Thornburg, LLP

Chicago, IL · 60606

312-214-8332

Steven P Petersen

Reg. 32927

Patent attorney

Leydig Voit and Mayer, Ltd.

Chicago, IL · 60601

312-616-5600

Lucas A. Peterson

Reg. 81460

Patent attorney

Blank Rome LLP

Chicago, IL · 60606

312-776-2603

Shawn Leonard Peterson

Reg. 44286

Patent attorney

McAndrews Held and Malloy, Ltd.

Chicago, IL · 60661

312-775-8000

Timothy F Peterson

Reg. 58457

Patent attorney

Buchanan Ingersoll & Rooney PC

Chicago, IL · 60606

312-261-8777

Philip Todd Petti

Reg. 31651

Patent attorney

USG Corporation

Chicago, IL · 60565

312-436-4590

David Z Petty

Reg. 52119

Patent attorney

McAndrews Held and Malloy LTD

Chicago, IL · 60661

312-775-8000

Gwen G Phanijphand

Reg. 74146

Patent agent

Chicago, IL · 60622

703-608-9058

Ryan N. Phelan

Reg. 60674

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606-6357

312-474-6300

Mark Edwin Phelps

Reg. 28461

Patent attorney

Leydig, Voit & Mayer LTD

Chicago, IL · 60654

312-616-5600

W Garland Phillips

Reg. 66521

Patent agent

Banner & Witcoff, LTD

Chicago, IL · 60606

312-463-5000

Justin Michael Philpott

Reg. 59945

Patent attorney

Banner Witcoff

Chicago, IL · 60606

312-463-5000

Ryan J. Pianetto

Reg. 68885

Patent attorney

McAndrews, Held & Malloy, Ltd.

Chicago, IL · 60661

312-775-8000

Cameron B. Pick

Reg. 71172

Patent agent

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6300

Mackenzie S. Pike

Reg. 81636

Patent attorney

Chicago, IL · 60654

312-862-2000

Sophia P. Pilipchuk

Reg. 79246

Patent agent

Hanley, Flight & Zimmerman, LLC

Chicago, IL · 60606

312-676-1737

Suresh B Pillai

Reg. 62726

Patent attorney

Suresh B. Pillai

Chicago, IL · 60616

773-230-5954

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.