In the battle over class certification, expert testimony proffered by both plaintiffs and defendants is playing an increasingly important role. The Supreme Court has not yet decided whether the test for admissibility of expert testimony announced in Daubert v. Merrell Dow Pharmaceuticals applies at the class-certification stage, although it has certainly dropped hints to that effect, including in Wal-Mart Stores, Inc. v. Dukes. In our view, it’s only a matter of time before the Supreme Court expressly holds that Daubert applies to expert testimony offered in support of or opposition to class certification.
Accordingly, defendants should pay careful
Continue Reading En Banc Ninth Circuit Demands That Courts Serve As Gatekeepers For Expert Testimony—Will That Rule Be Extended to Class Actions?