Melvin J. Rivera

He is Vice-Chair of McConnelll Valdés' Labor & Employment Law Practice Group and leader of the Labor Relations Practice Team. Mr. Rivera-Arce is an accomplished labor and employment law attorney with a record of outstanding results for employers, including multinational companies and domestic industry leaders. His practice concentrates on diverse topics, including wrongful termination, employment discrimination, labor unions, wages and hours, retaliation, sexual harassment, violati...

Edgardo Nieves-Quiles is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative Law and Corporate and M&A Law. Edgardo, 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 Edgardo is held by other top lawyers in the same geographic and legal practice area.

Eugenio J. Torres-Oyola is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Eugenio J., who practices law in San Juan, Puerto Rico, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Eugenio J. is held by other top lawyers in the same geographic and legal practice area.

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...

Juan Ramón Cancio-Ortiz is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law, Corporate and M&A Law and Structured Finance Law. Juan Ramón, 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 Juan Ramón is held by other top lawyers in the same geographic and legal practice area.

As Chair of the Labor & Employment Law Practice Group Ms. Montaner-Sevillano brings to the table her extensive experience in the field and she is able to provide a deep understanding of the intricacies of conducting business in Puerto Rico as well as a unique awareness of the importance of budget supervision and controls. Ms. Montaner-Sevillano concentrates her practice in employment rights laws. She provides counseling and litigation defense in cases filed under the Americans with Disabi...

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.

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

David Rivé-Power is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative Law and Health Care Law. David, 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 David 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.