Ninth Circuit: Lisa Kim, et al. v. Tinder, Inc. et al.

 Court abused discretion in certifying a class with an inadequate representative; the representative was subject to an arbitration agreement that did not bind approximately 5% of the class, there was limited evidence of discovery, and a motion against the move to compel arbitration was made late--as a motion to file a supplementary brief. 

Lisa Kim, et al. v. Tinder, Inc. et al.