KMK Law Complex Litigation Blog

Last week, the Ninth Circuit deepened the divide among the Circuits regarding ascertainability in class certification. In Briseno v. ConAgra Foods, Inc., 2017 U.S. App. Lexis 20 (9^th Cir. Jan. 3, 2017), the Ninth Circuit rejected the Third Circuit’s line of authority (see Carrera v. Bayer Corp., 727 F.3d 300 (3d Cir. 2013) and Byrd v. Aaron’s Inc., 784 F.3d 154 (3d Cir. 2015)) which requires plaintiffs’ counsel to show ascertainability by demonstrating an administratively feasible and reliable method to determine class membership at the class certification stage.

In our increasingly technological society, parties are encountering a greater demand for electronically stored information (“ESI”) in litigation. This demand has led to the adoption of a concept called proportionality. Proportionality evaluates the costs and benefits of e-discovery, to determine if discovery production is warranted.