Plaintiffs' attorneys firing the first courtroom salvos in sweeping litigation over popular products face a high hurdle to success: convincing jurors a product they may have used all of their lives can cause potentially catastrophic harm. That's the hurdle The Smith Law Firm's Allen Smith overcame in landing a $55 million verdict against Johnson & Johnson for the ovarian cancer Smith says J&J's signature-brand baby powder caused his client, Gloria Ristesund.