Welcome to Law.com Class Actions: Critical Mass, a weekly briefing for class action and mass tort attorneys.

This week: What are lawyers saying about the U.S. Third Circuit’s decision dismissing the Chapter 11 case of Johnson & Johnson’s talc subsidiary? Valisure, the laboratory whose findings sparked Zantac and other recalls, is under scrutiny by both the defense bar and the U.S. Food and Drug Administration. Find out who else got appointed to lead the multidistrict litigation over Merck’s Gardasil.