Barry M. Klayman and Mark E. Felger Partner Investments v. Theranos, Partner Investments v. Theranos, Colman v. Theranos, Colman Colman Colman Barry M. Klayman is a member in the commercial litigation group and the bankruptcy, insolvency and restructuring practice group at Cozen O'Connor. He regularly appears in Chancery Court. Mark E. Felger is co-chair of the bankruptcy, insolvency and restructuring practice group at the firm.