After its former client sued the firm for malpractice, Proskauer Rose and four of its partners have sued the client’s senior executives, claiming the malpractice suit has harmed the firm’s reputation and led it to incur substantial legal fees (See Complaint).

Proskauer is suing James Edelson, the general counsel to Overseas Shipholding Group (OSG); and Myles Itkin, the company’s former chief financial officer in Manhattan Supreme Court.