Judge’s Aetna-Humana ruling sparks class-action lawsuit: 5 things to know Written by Morgan Haefner | February 03, 2017 |Print |Email A Pennsylvania law firm filed a class-action lawsuit against Aetna following a judge’s ruling the payer’s proposed $37 billion acquisition of Humana violated antitrust laws. The lawsuit alleges the Hartford, Conn.-based payer made false claims about its decision …