( May 13, 2026, 2:43 PM EDT) -- NEW YORK — Keller Postman LLC and Ashley C. Keller, plaintiffs’ co-lead counsel in the acetaminophen autism spectrum disorder-attention deficit hyperactivity disorder (ASD-ADHD) multidistrict litigation, have appealed to the Second Circuit U.S. Court of Appeals a ruling by the MDL judge imposing sanctions on the firm and its senior partner for failing to comply with a protective order in the MDL....