Law360, New York (October 14, 2009) -- Mary Ellen Hennessy is a partner with Katten Muchin Rosenman LLP. She concentrates her practice in litigation, focusing on antitrust litigation and litigation involving financial institutions and claims under the securities laws.
A trial lawyer, Hennessy has practiced mainly in the area of complex commercial litigation relating to the antitrust and securities laws, with a particular emphasis on class actions, derivative actions...


