By Jacob Bunge 
 

The parent of the Chicago Board Options Exchange sued a smaller rival over its use of electronic-trading functions, according to court documents filed Monday.

CBOE Holdings Inc. (CBOE) is seeking $525 million in damages from the International Securities Exchange, an all-electronic stock-options market based in New York.

The dispute turns on systems that CBOE alleged are used by the ISE designed to automatically adjust traders' prices offered to buy or sell options contracts, which CBOE charged infringe upon CBOE's own long-held patents.

Such a service, shielding traders from taking on overly risky exposure, is an "essential feature" of electronic options markets such as ISE, according to CBOE's lawsuit. Rival owners of options exchanges, such as NYSE Euronext (NYX) and Nasdaq OMX Group Inc. (NDAQ), weren't named in the complaint.

A spokeswoman for the ISE, owned by Germany's Deutsche Boerse AG (DB1.XE, DBOEF), declined to comment.

The lawsuit was filed in the U.S. District Court for the Northern District of Illinois.

Besides the $525 million in damages sought, CBOE in its complaint asked for a judgment that would "treble" compensatory damages, as well as legal fees.

The lawsuit adds to a raft of court cases entwining the CBOE, owner of the oldest and busiest U.S. options exchange, and the ISE, its all-electronic rival launched in 2000.

The exchanges have jousted for about six years over CBOE's exclusive right to list heavily traded options on major stock-market benchmarks such as the Standard & Poor's 500 stock index. In late September, the Illinois Supreme Court declined to consider ISE's appeal of a lower court's ruling that upheld the CBOE's exclusive listing of the contracts.

On Nov. 2, an Illinois court blocked a separate effort by the ISE to list contracts resembling CBOE's proprietary S&P index options.

The ISE in 2010 sought $300 million or more in damages linked to alleged CBOE infringement on its own technology patent. CBOE in August of this year reopened a separate patent dispute with ISE, seeking a court ruling that its all-electronic C2 exchange doesn't infringe a patent on automated trading held by the ISE.

The latest CBOE lawsuit was earlier reported by Reuters. CBOE shares settled down 1% at $29.69 Tuesday.

Write to Jacob Bunge at jacob.bunge@dowjones.com

Subscribe to WSJ: http://online.wsj.com?mod=djnwires

Grafico Azioni NYSE Group (NYSE:NYX)
Storico
Da Giu 2024 a Lug 2024 Clicca qui per i Grafici di NYSE Group
Grafico Azioni NYSE Group (NYSE:NYX)
Storico
Da Lug 2023 a Lug 2024 Clicca qui per i Grafici di NYSE Group