Lawyers from antitrust litigation firm Labaton Sucharow have filed a prospective class action against General Electric and two of its health care subsidiaries, alleging the Boston-based company is trying to freeze out independent firms that service the GE gas anesthesia machines.

Gregory Asciolla, one of the three lead attorneys from the New York City-based law firm, is co-chairman of Labaton Sucharow’s antitrust and competition litigation practice. In that role, Asciolla focuses on representing businesses and public pension funds in complex antitrust and commodities class actions. He also represents clients in global antitrust matters involving price-fixing, benchmark and commodities manipulation, pay-for-delay and other anti-competitive practices.