Fernando Sabater-Clavell

Mr. Marqués-Díaz chairs McConnell Valdés' Litigation Practice Group. His practice includes general civil and commercial litigation before the Puerto Rico and federal courts, concentrating in local appellate practice, constitutional, tax, consumer class action, administrative, insurance - including healthcare insurance litigation - and land use litigation. Mr. Marqués-Díaz has a solid constitutional law practice. He has argued many cases involving constitutio...

Her main areas of practice are tax incentives, employee benefits, corporate and individual income taxes. Prior to joining McConnell Valdés, Ms. González-Ibarría was a Legal Counsel with the Internal Revenue Area of the Puerto Rico Treasury Department. While with the Puerto Rico Treasury Department, she reviewed closing agreements and private letter rulings concerning a broad range of issues including general income taxation, withholding, corporate reorganizations and empl...

Roberto Quiñones-Rivera, a graduate of Yale Law School, started his litigation practice with Paul, Weiss, Rifkind, Wharton & Garrison in New York and Choate, Hall & Stewart in Boston. He has over 30 years of experience in complex commercial litigation and arbitration and in legal counseling. Mr. Quiñones has handled major business cases in a wide range of areas, including securities, antitrust, RICO, intellectual property, distribution and ERISA. Mr. Quiñones has ...

Ramón Coto-Ojeda is the Managing Partner of Coto & Associates, who also heads the firm’s Alternative Dispute Resolution practice and the Cuba Team. Before forming Coto & Associates in January of 1999, he was a partner of McConnell Valdés where he worked since he joined the firm in 1982 as a law clerk. Mr. Coto-Ojeda has vast experience representing institutional lenders and other corporate interests in civil and complex commercial litigations, including products li...

Ms. Corrada has nearly 20 years of experience in Environmental Law. She regularly provides counseling to clients on permitting, enforcement and compliance with environmental and land use laws and regulations. She began her career in the public service, in the Puerto Rico Environmental Quality Board, where she assisted the Air Quality Area in drafting and enacting amendments to air regulation which would allow enforcing the Clean Air Act's Title V, and adopting the State Implementation Plan in...

Elaine Maldonado-Matías is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law and Litigation. Elaine, who practices law in San Juan, Puerto Rico, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Elaine 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...

Mariela Rexach is an experienced federal litigator with outstanding command of federal civil procedure and evidence, who practices in all areas of employment law. She has actively participated in several major cases before the U. S. District Court for the District of Puerto Rico and the U. S. Court of Appeals for the First Circuit. She has over 50 published federal cases and an outstanding summary judgment record. She has also successfully tried numerous cases before Puerto Rico courts and re...

José E. Villamarzo Santiago is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. José E., who practices law in San Juan, Puerto Rico, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which José E. is held by other top lawyers in the same geographic and legal practice area.

Mr. Zayas-Marxuach has developed a commercial and general civil litigation practice in federal and state courts, with emphasis on distribution and franchising, insurance litigation, the Racketeer Influenced and Corrupt Organizations (RICO) Act, class actions and product liability, particularly prescription drug litigation. Additionally, Mr. Zayas-Marxuach regularly provides litigation and counseling services to individuals in estate and probate matters.