Michael is a Partner in Marks, O’Neill, O’Brien, Doherty & Kelly, P.C.’s New Jersey office. In his nearly two decades of litigation practice with the firm, Michael has focused on high exposure bodily injury and property losses stemming from construction defect, environmental exposure and contamination, work place accidents, and Dram Shop claims. Michael’s typical clients include developers, general contractors, subcontractors, and suppliers. Further, he has extensive experience representing clients such as fuel suppliers and other merchants in third party property damage claims, class actions, and subrogation matters. Michael has also defended bars and restaurants against Dram Shop liability claims, and acted as monitoring counsel for such claims on behalf of the establishments’ excess insurance carriers.

Michael is admitted to practice and has successfully represented his clients in New Jersey and Pennsylvania, in arbitration, mediation, and trial. Michael has successfully tried numerous cases throughout his career, and has argued before and been affirmed by the New Jersey Appellate Division. He has also been asked to appear Amicus Curiae on behalf of the New Jersey Fuel Merchants Association.

Michael is a member of Marks O’Neill’s Diversity & Inclusion Committee. He is also a member of the Defense Research Institute and was named a Fellow of The Academy of Advocacy at Temple University. Michael has presented seminars on topics such as litigation strategy, trial preparation, insurance policy and contract interpretation, liability claims evaluation, and defense and indemnification evaluation in his practice areas. 

Michael A. Kosar
Partner / New Jersey

Phone 856-406-1317
Email mkosar@moodklaw.com

Michael A. Kosar PDF


  • J.D., Widener University School of Law, 1997
  • B.S., University of Scranton, 1994

Bar Admissions

  • New Jersey, 1998
  • Pennsylvania, 1997
  • U.S. District Court for the District of New Jersey, 1999
  • U.S. District Court for the Middle District of Pennsylvania, 1997
  • U.S. Supreme Court, 2004

Bar Associations

  • Pennsylvania Bar Association
  • Camden County Bar Association

Practice Areas

  • Casualty Group
  • Construction Accident/Construction Defect
  • Toxic Tort, Mass Tort, Environmental and Products Liability

Representative Cases



New Jersey
Cherry Tree Corporate Center, 535 Route 38 East, Suite 501, Cherry Hill, NJ 08002