María E. Picó

Ms. López del Valle is an Income Member in the Litigation Practice Group. Her primary practice areas include general civil litigation and arbitration, with an emphasis on Securities Arbitration and Intellectual Property. https://www.mcvpr.com/attorneys-Sonia-Lopez

Karla Rivera-Rubio is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Karla, who practices law in San Juan, Puerto Rico, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Karla is held by other top lawyers in the same geographic and legal practice area.

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...

Ana B. Rosado-Frontanés is of counsel in the San Juan, Puerto Rico, office of Jackson Lewis P.C. Ana provides legal counsel regarding all aspects of labor and employment matters and litigates before all state, federal, administrative and local forums. Ana began her legal career as a corporate lawyer in a New York law firm. After two years practicing corporate law, she shifted gears and began practicing employment law, drawn to the human aspects involved in employment law issues and cas...

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...

Michelle Marichal-Soderberg is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Michelle, 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 Michelle is held by other top lawyers in the same geographic and legal practice area.

He specializes in cross border transactions, government affairs, and government procurement and contracting. His corporate practice has been focused primarily on insurance and banking regulatory issues and insurance M&A transactions, involving both insurance company and insurance brokerage asset purchase and stock purchase transactions. Mr. Ramirez has also been involved in the organization and authorization of insurers, including the incorporation and organization of the first domestic l...

Idalmarie Lopez is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Governance & Compliance Practice. Idalmarie, 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 Idalmarie is held by other top lawyers in the same geographic and legal practice area.

José A. Meléndez Alfonzo is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and M&A Law and Energy Law. José A., 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 A. is held by other top lawyers in the same geographic and legal practice area.

Mrs. Carballo Chairs McConnell Valdés' Tax Practice Group. She focuses her practice on complex corporate tax matters, including startup operations, inbound and outbound corporate reorganizations, acquisitions, financings, exit strategies, legislative affairs, tax incentives and exemptions, and competent authority proceedings between the Puerto Rico Treasury Department and the Internal Revenue Service. A substantial part of her practice is devoted to tax minimization strategies through ...