Leon M. Cao
Patent attorney, USPTO registration number 83952, status Active.
- Firm
- Banner & Witcoff
- Location
- Chicago, IL
- On the USPTO roster since
- September 2025
Leon M. Cao is a USPTO-registered patent attorney (registration number 83952) at Banner & Witcoff, in Chicago, IL. The registration is active on the current USPTO roster, and Leon M. Cao has been listed on the roster since September 2025.
Banner & Witcoff has 5 registered patent practitioners on the roster (5 patent attorneys), so Leon M. Cao works alongside 4 other registered practitioners there.
Chicago, IL has 1,896 registered patent practitioners in all: 1,537 patent attorneys and 303 patent agents.
Other registered practitioners in Chicago, IL
- Herbert H. Finn — Patent attorney, Reg. No. 38139, Greenberg Traurig, LLP
- Anika E. Fischer — Patent agent, Reg. No. 84665, Chicago-Kent College of Law
- Ryan J. Fischer — Patent agent, Reg. No. 55180
- Julie A. Fischer — Patent agent, Reg. No. 81577
- Jennifer L. Fitzgerald — Patent attorney, Reg. No. 39976, Freeborn & Peters LLP
- Ryan T. Fitzgerald — Patent attorney, Reg. No. 79303, Crowell & Moring
- Katherine J. Fitzpatrick — Patent attorney, Reg. No. 61596, WM. Wrigley Jr. Company
- Thomas R. Fitzsimons — Patent attorney, Reg. No. 40607, Greer Burns and Crain LTD
All patent attorneys and agents in Chicago, IL
Patent firms in Illinois · Practitioners by state
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