Patent Assignment
Reel/Frame 020585/0221
Assignment of Assignor's Interest
Recorded: 2008-02-29
Pages: 3
Assignor
SMITH, EILEEN C.
Executed: 2008-02-28
Assignee
CHICAGO BOARD OPTIONS EXCHANGE, INCORPORATED
400 S. LASALLE STREET, CHICAGO, ILLINOIS, 60605
Covered Property
(1)
Hybrid Trading System for Concurrently Trading Combined Orders for Financial Instruments Through Both Electronic and Open-Outcry Trading Mechanisms
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.