Best Lawyers in Puerto Rico for Corporate and M&A Law
Ms. Diez is an experienced trial attorney with over 15 years of practice with a successful litigation record representing employers. She provides legal counseling in all areas of employment law. She actively litigates employment lawsuits and administrative matters, both in local and federal forums, with excellent results for clients. Her practice focuses on preventive counseling and litigation in diverse topics, including wrongful termination, employment discrimination, wage and hour, retalia...
Mr. Escudero’s practice includes advice in structuring commercial transactions, purchase and sale of businesses - including manufacturing - as well as corporate reorganizations; he also advises businesses and individuals with regard to the operation, expansion and transfers of their businesses. He counsels individuals on estate planning, wills, trusts and wealth preservation including asset protection trusts. He has worked on numerous green field development of real estate for the estab...
Samuel Rosado-Domenech is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and M&A Law. Samuel, who practices law in San Juan, Puerto Rico, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Samuel is held by other top lawyers in the same geographic and legal practice area.
His main areas of practice are mergers & acquisitions, public financing, debt restructuring, project finance, distribution & sales representation laws and contracts, government bids & contracts, and public-private partnerships. Mr. Céspedes chaired the Firm’s Corporate Practice Group from 2002 to 2018. He is ranked as one of Puerto Rico's Leading Attorneys in the Corporate/Commercial field by the international publication Chambers & Partners in both its Global and...
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.
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, who joined the Firm in 1974, practices in the areas of tax exemption, general corporate and government contracts. He has negotiated and re-negotiated dozens of grants of tax exemption for companies owned by U.S., European and Puerto Rican entities, including Johnson & Johnson, Schering-Plough, Medtronic, Harvey Hubbell, Astra-Zeneca (U.K.), Aventis (France) and MOVA (Puerto Rico).
Juan Carlos Méndez is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and M&A Law. Juan Carlos, 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 Juan Carlos is held by other top lawyers in the same geographic and legal practice area.
José R. Cacho is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and M&A Law and Debt & Equity. José R., who practices law in San Juan, Puerto Rico, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which José R. is held by other top lawyers in the same geographic and legal practice area.
Boris Jaskille is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and M&A Law. Boris, 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 Boris is held by other top lawyers in the same geographic and legal practice area.
Rafael Hernández-Miranda is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and M&A Law. Rafael, 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 Rafael is held by other top lawyers in the same geographic and legal practice area.
Marta S. Ramírez-Isern is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and M&A Law and Real Estate Law. Marta S., 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 Marta S. is held by other top lawyers in the same geographic and legal practice area.
She is the Vice-Chair of McConnell Valdés' Corporate Practice Group. Her main areas of practice include general corporate matters, financial institutions, mergers and acquisitions in the insurance and banking industries, distribution and sales representative laws, insurance and healthcare services - including litigation - as well as regulatory matters and government and legislative affairs. Before joining McConnell Valdés, Mrs. Portela concentrated in the practice of civil and c...
Our Methodology
Recognition by Best Lawyers is based entirely on peer review. Our methodology is designed to capture, as accurately as possible, the consensus opinion of leading lawyers about the professional abilities of their colleagues within the same geographical area and legal practice area.
The Process
Best Lawyers employs a sophisticated, conscientious, rational, and transparent survey process designed to elicit meaningful and substantive evaluations of the quality of legal services. Our belief has always been that the quality of a peer review survey is directly related to the quality of the voters.