Illinois

Patent attorneys in Illinois

Illinois hosts 2,917 active patent practitioners registered with the USPTO Office of Enrollment and Discipline. Patent attorneys and patent agents can both prepare and file patent applications, but only patent attorneys can also offer legal advice on prosecution strategy, freedom-to-operate analyses, and infringement opinions in Illinois. Practitioners are concentrated across 20 cities, with the largest clusters in the metros listed below. Notable firms with multiple registered practitioners in the state include Banner & Witcoff, Ltd., Rakoczy Molino Mazzochi Siwak LLP, and Kirkland & Ellis.

Top cities in Illinois

All practitioners in Illinois

Jared W. Radkiewicz

Reg. 70713

Patent attorney

Banner & Witcoff, Ltd.

Chicago, IL · 60606

312-463-5000

Joseph M. Radosevich· II

Reg. 72053

Patent agent

Peoria, IL · 61614

309-868-1203

Brent D Rafferty

Reg. 55806

Patent attorney

Hanna City, IL · 61536

650-279-3050

Tara M Raghavan

Reg. 55557

Patent attorney

Rakoczy Molino Mazzochi Siwak LLP

Chicago, IL · 60610

312-222-6340

Jeremy D. Raincrow

Reg. 70315

Patent agent

Evanston, IL · 60202

405-208-1205

Jacob C. Rambeau

Reg. 73820

Patent agent

Kirkland & Ellis

Chicago, IL · 60654

312-862-2000

Elaine M Ramesh

Reg. 43032

Patent attorney

Barrington, IL · 60010

847-854-8070

Thomas A Rammer

Reg. 62591

Patent attorney

Schiff Hardin LLP

Chicago, IL · 60606

312-258-5537

Justin Brian Rand

Reg. 48552

Patent attorney

McDermott Will & Emery, LLP

Chicago, IL · 60606-5096

312-984-5486

Ned William Randle

Reg. 35989

Patent attorney

Smithton, IL · 62285

618-473-2030

Denise Randolph-Okonkwo

Reg. 57501

Patent attorney

Chicago, IL · 60612

312-455-9503

Brandon M Ranieri

Reg. 83518

Patent agent

Park Ridge, IL · 60068

847-636-2562

Arik Brenton Ranson

Reg. 43874

Patent attorney

Greer Burns and Crain, Ltd.

Chicago, IL · 60606

312-360-0080

Weisun Rao

Reg. 68824

Patent attorney

Venture Partner, LLC

Chicago, IL · 60611

312-774-9465

Wilhelm L Rao

Reg. 52151

Patent attorney

McAndrews Held and Malloy LTD

Chicago, IL · 60661

312-775-8000

Abhishek Rastogi

Reg. 65777

Patent attorney

Research In Motion Corporation

Rolling Meadows, IL · 60008

847-472-7822

Christopher Peter Rauch

Reg. 45034

Patent attorney

Glenview, IL · 60025

224-661-7769

Paul E Rauch

Reg. 38591

Patent attorney

Evan Law Group, LLC

Chicago, IL · 60616

312-876-1400

Surendra K Ravula

Reg. 65588

Patent attorney

Latham & Watkins LLP

Chicago, IL · 60611

312-876-7700

Brent P Ray

Reg. 54390

Patent attorney

King & Spalding LLP

Chicago, IL · 60606

312-995-6333

Paul M. Raya

Reg. 60163

Patent attorney

Cook Alex Ltd.

Chicago, IL · 60606

312-236-8500

Matthew J Raymond

Reg. 45035

Patent agent

Kaenn Technologies

Berwyn, IL · 60402

David C Read

Reg. 39811

Patent attorney

Marshall Gerstein & Borun, LLP

Chicago, IL · 60606

312-474-6300

Joseph P Reagen

Reg. 35332

Patent attorney

Baxter Healthcare Corporation

Deerfield, IL · 60015

224-948-3315

Liam F Reardon

Reg. 63428

Patent attorney

Chicago, IL · 60608

312-420-4518

Timothy J. Rechtien

Reg. 70501

Patent attorney

Banner & Witcoff, LTD

Chicago, IL · 60606

312-463-5000

Christopher Joseph Reckamp

Reg. 34414

Patent attorney

Faegre Baker Daniels LLP

Chicago, IL · 60606

312-356-5094

Darien L Reddick

Reg. 57956

Patent attorney

Deere & Company

Moline, IL · 61265

309-748-2712

Prateek Reddy

Reg. 79156

Patent attorney

Michael Best & Friedrich LLP

Chicago, IL · 60606

312-596-5811

Joshua M Reed

Reg. 68564

Patent attorney

Allscripts

Chicago, IL · 60654

312-772-5674

Common questions

Do I need a patent attorney based in Illinois?

No. Every USPTO-registered patent practitioner is licensed to file applications on behalf of inventors in any state, regardless of where the practitioner's office is. Choosing a Illinois-based practitioner can simplify in-person inventor signings, local meetings, and same-time-zone calls, but it is not a legal requirement.

How many patent attorneys are licensed in Illinois?

2,917 active USPTO-registered patent practitioners list a Illinois office address on the OEDCI roster. This includes both patent attorneys (who can also offer legal advice) and patent agents (who can prepare and file patents but not offer broader legal advice).

What is the difference between a patent attorney and a patent agent?

Both pass the USPTO Patent Bar and can prepare, file, and prosecute patent applications. Only patent attorneys also hold a state bar license, meaning they can additionally offer legal advice on infringement, licensing, and litigation strategy. Patent agents tend to charge less per hour and are common at large in-house IP departments.