Luis C. Marini-Biaggi

Luis C. Marini-Biaggi is a capital member and Department Head of the Litigation Department and Co-Chair of the Bankruptcy, Restructuring and Insolvency Group. Luis concentrates his practice in all aspects of insolvency matters including bankruptcy, acquisition of distressed assets, public and private sector restructurings. He also regularly handles complex commercial litigation at the trial and appellate level, including defense of lender liability suits and contract litigation. He regularly represents financial institutions, private equity funds, purchasers of distressed debt or assets, and secured and unsecured creditors on insolvency matters.

The international publication Chambers & Partners has ranked and recognized Luis as a “Band 1” attorney for lawyers in bankruptcy and restructuring in Puerto Rico. As part of its overview of the Puerto Rico legal market, Chambers recently commented that: “[t]he economic climate has, however, contributed to an increased volume of bankruptcy and restructuring matters, an area currently led by O’Neill & Borges’ Luis Marini.” Chambers and Partners (Latin America), Puerto Rico Overview, 2015. Chambers quotes sources describing Luis’ “a great lawyer who has a deep knowledge of insolvency matters”, as being “remarkably attentive and succinct”, and that “he understands his clients’ needs and will do everything in his hands to help them succeed. It is a true pleasure to work with him.” Chambers & Partners, Latin American Edition, 2016, 2015 and 2014 (also ranked in 2013, 2012, and 2011 editions and in the Global Edition). Luis has also been recognized as a leading insolvency lawyer by Best Lawyers®, Puerto Rico Edition.

Luis frequently writes and lectures on insolvency and bankruptcy matters. Recently, he was a speaker at the Puerto Rico Chamber of Commerce’s 1st PROMESA Conference (2016), the Insolvency Congress of the Americas (presenting “A Walk Through PROMESA”) (2016), the Puerto Rico Industrial Association (Reorganization Aspects of PROMESA) (2016), the American Bankruptcy Institute’s “Caribbean Insolvency Symposium” (2016 and 2014), at the Federal Bar Association’s “Puerto Rico in Crisis: Current Topics in Public and Private Restructurings” (2014) “Overview of Chapter 11” (2013) and “Emerging from Bankruptcy” (2012) seminars. Luis has also co-authored articles for the American Bankruptcy Institute’s “Caribbean Insolvency Symposium” in 2004, 2007, 2014 and 2016. He regularly provides seminars on various technical bankruptcy and insolvency issues to financial institutions, government entities, private funds, and other entities throughout Puerto Rico.

Luis also serves on the Local Bankruptcy Rule Committee of the United States Bankruptcy Court, District of Puerto Rico and is an associate editor for the American Bar Association’s Bankruptcy, Insolvency and Litigation committee.

Prior to joining O’Neill & Borges, LLC, Luis practiced with Shaw Pittman LLP (now Pillsbury Winthrop Shaw Pittman LLP), in Washington D.C., concentrating in bankruptcy, insolvency and commercial litigation.


  • University of Michigan, B.B.A.
  • Georgetown University, J.D.

Bar Admissions

  • Puerto Rico
  • District of Columbia
  • Virginia
  • U.S. District Court for the District of Puerto Rico
  • U.S. Bankruptcy Court for the District of Columbia
  • U.S. District Court for the District of Columbia
  • Eastern District Court of Virginia
  • U.S. Court of Appeals for the First Circuit
  • U.S. Court of Appeals for the District of Columbia