Katharine R. Colletta
T: (504) 585-7708
colletta@chaffe.com Download VCard

Areas of Practice

  • Admiralty
  • Product Liability
  • Railroad
  • Oil and Gas


J.D., Tulane University Law School, 2001
B.A., University of Notre Dame, 1998

Bar Admissions

U.S. District Court for the Eastern, Middle, and Western Districts of Louisiana
Eastern and Southern Districts of Texas, and the Northern and Southern Districts of Mississippi
U.S. Court of Appeals for the Fifth Circuit
Supreme Court of the United States

Katharine R. Colletta

As a partner with Chaffe McCall, Katharine Colletta focuses her practice in the areas of maritime litigation and general corporate defense and has represented  Fortune 200 oilfield service companies in litigation and contractual matters.  Colletta has further experience working on a wide variety of transactional matters, contracts, and general business matters, including contractual indemnity and insurance coverage issues.

Colletta has authored a successful brief in the United States Court of Appeals for the Sixth Circuit regarding class certification and successfully opposed a writ of certiorari to the United States Supreme Court on that issue.  She has also co-authored a brief in the United States Court of Appeals for the Fifth Circuit regarding circular indemnities created by multiple oil field services contracts and additional-insured status.

Colletta is an honors graduate of the University of Notre Dame, attended Tulane Law School.  While in law school, she served as a judicial extern to the Honorable William H. Byrnes, Chief Judge of the Louisiana Fourth Circuit Court of Appeals.


  • Panelist/Presenter, "Recent maritime decisions" and  "Punitive damages,"2009 Maritime Update, New Orleans Bar Association, December 2009, New Orleans, LA


  • Selected for inclusion in The Best Lawyers in America® for Oil and Gas Law, 2013-2016
  • AV Preeminent® Peer Review Rating in Martindale-Hubbell
  • Selected for inclusion in Louisiana Super Lawyers as a Rising Star, 2014
  • Named as a Top Lawyer in Admiralty, Maritime and Energy in New Orleans Magazine, 2013


  • Junior League of New Orleans