From Vallario v. Vandehey, 554 F.3d 1259 (10th Cir. 2009):
Interlocutory review of a district court's class certification order is generally appropriate in three types of cases. The first such category is comprised of "death knell cases," which refers to situations in which a questionable class certification order is likely to force ...
From Vallario v. Vandehey, 554 F.3d 1259 (10th Cir. 2009):
Interlocutory review of a district court’s class certification order is generally appropriate in three types of cases. The first such category is comprised of “death knell cases,” which refers to…