Industry Set to Battle Patents via Courts, Rewrites, M&A

The Illinois Supreme Court’s recent rejection of an appeal by the International Securities Exchange marked the final nail in the coffin of a long-running dispute between ISE and the Chicago Board Options Exchange and others, in which ISE sought to list options on the S&P 500 and Dow Jones Industrial Average indexes, which are licensed exclusively to CBOE. Ultimately, the courts ruled in favor of CBOE, upholding previous decisions that allowing ISE to list options on the indexes would infringe