Liskow & Lewis Welcomes Mark Deethardt


Liskow & Lewis is pleased to welcome Mark Deethardt to the firm.

Mark Deethardt is a litigator in the firm’s New Orleans office whose practice focuses on energy, environmental, and toxic tort litigation, as well as other litigation matters. 

Before joining the firm, Mark was an associate with a large New Orleans-based defense firm where he maintained a diverse litigation practice.  There, Mark routinely represented highly regulated national and regional financial institutions and banks in consumer financial services litigation involving single plaintiffs and class actions.  Mark represented a variety of other businesses – both large and small – in complex commercial litigation, property and insurance disputes, tax title recovery, and other tort and personal injury cases.  Mark is also experienced at protecting and preserving clients’ rights on appeal.  He has authored numerous successful merits briefs and defended writ applications before all Louisiana courts of appeals, the Louisiana Supreme Court, and the United States Court of Appeals for the Fifth Circuit.      

Mark graduated magna cum laude from LSU Law in 2012 where he was elected to the Order of the Coif and served as a Junior Associate and Senior Editor on the Louisiana Law Review.  As a Junior Associate on the Law Review, Mark received the Vinson & Elkins Award for Outstanding Student Case Note or Comment.  Before entering private practice, Mark served as a judicial law clerk to the Honorable Jeanette Theriot Knoll, former Associate Justice of the Louisiana Supreme Court.