Lesson: Match Your Class Definition to the Advertising Campaign
On June 17, 2010, the California Supreme Court denied the petition for review and request for depublication in Pfizer, Inc. v. Superior Court, 182 Cal. App. 4th 622 (2d Dist., 2010). Accordingly, this important post-Tobacco II appellate opinion remains good authority. Pfizer provides a cautionary tale of attempting to certify too broad a class. The lesson here is to tailor your proposed class definition to the scope and manner in which the alleged misrepresentations were made.
In Pfizer, a consumer sued a mouthwash manufacturer pursuant to the unfair competition law (UCL) (Bus. & Prof. Code, § 17200 et seq.) and the false advertising law (Bus. & Prof. Code, § 17500 et seq.). The consumer alleged the manufacturer marketed its mouthwash in a misleading manner by representing the use of mouthwash could replace the use of dental floss in reducing plaque and gingivitis.
The trial court certified a class of "all persons who purchased Listerine, in California, from June 2004 through January 7, 2005." The Court of Appeal granted Pfizer's petition for writ of mandate, concluding the trial court's class definition was overbroad. The Supreme Court granted review. On August 19, 2009, the Supreme Court transferred the matter back to the Court of Appeal with directions to vacate the decision and reconsider the matter in light of In re Tobacco II Cases (2009) 46 Cal.4th 298 [93 Cal.Rptr.3d 559, 207 P.3d 20] (Tobacco II). Having done so, The Court of Appeal again concluded the class definition is overbroad and granted Pfizer's petition.
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