Several leading law firms in the NFL concussion settlement litigation are taking issue with an expert report that suggested slashing attorney fee recoveries.

More than 10 law firms have filed responses to a December expert report that recommended capping attorney fees. Attorneys questioning the report’s conclusions included both Chris Seeger of Seeger Weiss and Sol Weiss of Anapol Weiss, who are co-lead class counsel in the litigation that came to a $1 billion settlement with the National Football Association in early 2015.