Law360, New York (August 16, 2012, 8:06 PM ET) -- A CBOE Holdings Inc. unit on Wednesday renewed its quest to stamp out a patent for automated options exchange trading held by rival International Securities Exchange LLC — which has sued CBOE for infringement — asking an Illinois federal judge to declare the patent invalid, unenforceable and not infringed.
ISE's U.S. Patent Number 6,618,707, "Automated exchange for trading derivative securities," has been the subject of a long-running battle between the company and CBOE's C2 Options Exchange Inc. CBOE has previously sued twice to have the '707...
CBOE Renews Bid To Nix ISE's Options Trading Patent
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