Welcome to Critical Mass, Law.com's new briefing on class actions and mass torts. I'm Amanda Bronstad in Los Angeles. This week, the New Jersey Supreme Court takes up a battle over experts, and a federal judge freezes out some outside funders in the NFL concussion settlement. Hundreds of lawsuits over a diabetes drug were revived by a 9th Circuit panel. Also, find out what made the 7th Circuit criticize a case for being “emblematic of what is wrong with class actions.”

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Tangle Over Science Set in NJ Pharma Case

The New Jersey Supreme Court has agreed to hear an appeal in the litigation over Accutane, the anti-acne drug. Law.com's Michael Booth has the story.