A federal judge chose two lawyers Monday to serve as lead counsel in a putative class action against drug manufacturers and pharmacies alleging antitrust violations, following squabbling from several firms eager to take the leading role.

U.S. District Judge Brian Martinotti of the District of New Jersey appointed Steve Berman of Hagens Berman Sobol Shapiro and James Cecchi of Carella, Byrne, Cecchi, Olstein, Brody & Agnello to represent the putative class of patients with diabetes who purchased insulin from certain drugmakers.

The suit alleges drug manufacturers including Novo Nordisk, Sanofi-Aventis and Eli Lilly and Co., as well as pharmacy benefit managers like CVS Health, who act as middlemen between drug companies and insurers, are engaged in an “anticompetitive scheme” to raise prices for insulin products.