A group of plaintiffs represented by law firm A filed a parallel putative class action to one filed by law firm B. B’s suit was allowed to proceed. A’s was stayed. When notice of a tentative settlement of B’s suit was sent, A sent a letter to class members urging them to opt out. B obtained court orders sending corrective notice to class members and voiding the opt outs obtained by A. This decision holds that the two orders are not appealable under the collateral order doctrine because the orders can be reviewed on appeal from final judgment without any loss of creditable interests by A or its clients.