Iván G. Marrero

Mr. Juan J. Casillas-Ayala, Esq. is an Attorney at Casillas, Santiago & Torres, LLC, where he specializes in Labor & Employment and Commercial Litigation. He was a shareholder in the Labor and Employment division of a major law firm in Puerto Rico, where he further sharpened his litigation skills during his 11 years tenure at the firm. Prior to this, he served as law clerk at the Court of Appeals with now Supreme Court Justice Rafael Martínez-Torres and subsequently at the Supreme Co...

Juan A. Frau Escudero is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation. Juan A., who practices law in San Juan, Puerto Rico, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Juan A. is held by other top lawyers in the same geographic and legal practice area.

Mr. Fernández-Lugo Chairs McConnell Valdés' Environmental, Energy & Land Use Practice Group. He represents clients before local and federal agencies with jurisdiction over environmental, energy and land use matters, such as the U.S. Environmental Protection Agency, the U.S. Army Corps of Engineers, the Environmental Quality Board, the Department of Natural and Environmental Resources, the Solid Waste Management Authority, the Puerto Rico Electric Power Authority, the State E...

Luis Raúl Román Negrón is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice and Litigation. Luis Raúl, who practices law in San Juan, Puerto Rico, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Luis Raúl is held by other top lawyers in the same geographic and legal practice area.

Mrs. Cartagena maintains a broad litigation and counseling practice representing corporate entities in a wide variety of business disputes. She has significant experience in complex litigation, including consumers’ class actions, insurance litigation, contractual disputes, tax deficiency proceedings and general tort litigation in both state and federal courts. She also has significant experience in administrative forums before multiple agencies and on bids and procurement consulting and...

Mr. Cortés-Rexach has practiced law in Puerto Rico for over three decades, concentrating in the areas of commercial and project financing and real estate law. His involvement in Puerto Rico’s tourism industry is extensive, having participated as counsel in a significant number of the major hotel and resort developments in the island including Rio Mar and Palmas del Mar Resorts, the the San Juan Marriott Hotel and more recently, in the Distrito T-Mobile, a multi- million entertain...

Roberto Prats-Palerm is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law and Litigation. Roberto, who practices law in San Juan, Puerto Rico, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Roberto is held by other top lawyers in the same geographic and legal practice area.

Mr Casellas has over 25 years of experience in various corporate and financing matters, including project development and finance, commercial lending and structured finance, real estate and mergers and acquisitions. He has acted as counsel for various financial institutions in commercial lending and structured finance transactions. Some of his recent transactions include acting as counsel for Autopistas Metropolitanas de Puerto Rico, LLC in the financing of the PR-22 toll road concession, the...

Ms. Amarily Maldonado, Esq. joined Casillas, Santiago & Torres, LLC in April 2018, where she serves as an Attorney in the Corporate and Tax Divisions. Prior to joining the firm, Ms. Maldonado was a Senior Manager in the Tax Advisory Division of a major international accounting firm in Puerto Rico, where she tenured for six years. Ms. Maldonado commenced her career as an Associate in the Corporate Tax practice of one of the Big Four accounting firms and also served as a corporate and tax a...

Manuel handles complex, high-profile disputes. He has successfully tried multiple cases in federal and state courts, as well as in arbitration proceedings and administrative forums. He also has successfully argued or briefed multiple cases before the First Circuit Court of Appeals, the Puerto Rico Supreme Court, and the Puerto Rico Court of Appeals. Manuel regularly lectures on the Federal Rules of Evidence, and has written multiple articles on evidence, and on the Puerto Rico Dealer and Fran...