Charles A. Cuprill-Hernández

Her main areas of practice are corporate and individual income taxes. Prior to joining McConnell Valdés, she was a Tax Counsel with the Puerto Rico Treasury Department, where she reviewed private letter rulings concerning a broad range of issues including corporate and flow-through entities taxation, tax reorganizations, sales and use tax and other tax matters.

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...

She concentrates her litigation practice on intellectual property, securities arbitrations, data security, media and entertainment, and healthcare facility liability. Within these areas, she counsels clients on trademark, copyright, unfair competition, false advertising, right of publicity, and other related commercial matters. Her securities practice, which includes arbitrations before the Financial Industry Regulatory Authority, has allowed her to develop unique skills within this particula...

Alexandra C. Casellas-Cabrera is a top attorney recognized by Best Lawyers in the practice area(s) of Competition / Antitrust Law. Alexandra C., 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 Alexandra C. is held by other top lawyers in the same geographic and legal practice area.

Hermann D. Bauer-Álvarez is a top attorney recognized by Best Lawyers in the practice area(s) of Arbitration and Mediation, Debt & Equity, Insolvency and Reorganization Law and Litigation. Hermann D., who practices law in San Juan, Puerto Rico, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Hermann D. is held by other top lawyers in the same geographic and legal practice area.

He represents U.S. and foreign clients in complex commercial litigation, bankruptcy, workouts, foreclosure and asset repossession. A member of the firm's PROMESA Task Force, Mr. Arias has been actively counseling investment funds and creditors on Puerto Rico public debt restructuring. In the aftermath of Hurricane María, he has also been involved in disaster relief consulting and procurement of reconstruction projects, particularly in the energy and healthcare fields. He also has exten...

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.

Alfredo Alvarez-Ibáñez is a member in the Corporate Department. He has been with O’Neill & Borges since 1996. Alfredo’s practice is concentrated in various areas of commercial law and creditors’ rights, including real estate, commercial lending, secured transactions, asset-based finance, and complex out-of-court workouts and restructurings, representing both local and U.S.-based financial institutions and businesses. Alfredo’s practice also involves c...

Mr. Rodríguez-Ema concentrates his practice in government affairs, corporate law, and securities matters. Mr. Rodríguez-Ema also works on infrastructure and privatization projects. During the last two decades, he worked on all major privatization endeavors conducted by the government of Puerto Rico, including the sale of Puerto Rico Telephone Company. He is the former Chief of Staff under Governor Luis Fortuño's administration. In that capacity Mr. Rodríguez-Ema he...

Marie Carmen Muntaner is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law and Medical Malpractice Litigation. Marie Carmen, 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 Marie Carmen is held by other top lawyers in the same geographic and legal practice area.