Antonio J. Santos

Mr. Miguel A. Santiago. Esq. is an Attorney at Casillas, Santiago & Torres, LLC. Prior to founding CST, Mr. Santiago was a partner at one of Puerto Rico’s largest and oldest law firms where he spent close to ten years counseling in the corporate-tax area including corporate, tax, employee benefits, real estate and employment law. Before such tenure, he was a senior tax consultant at Ernst & Young, LLP. Mr. Santiago counsels employers in all aspects of Corporate, Tax, Employee Be...

Mr. García-Díaz has over 20 years of experience in the private practice, providing counseling to clients in regulatory and compliance matters related to major federal and local environmental laws, such as CERCLA (Superfund), RCRA, Clean Air Act, Clean Water Act and the Oil Pollution Act. He represents clients before local and federal agencies with jurisdiction over Puerto Rico environmental matters, such as the United States Environmental Protection Agency, the United States Arm...

Pedro Jaime Torres-Díaz is the office managing principal of the Miami, Florida, office and a principal in the San Juan, Puerto Rico, office of Jackson Lewis P.C. He is also a past president of the Hispanic National Bar Association. His practice concentrates on employment discrimination and wage and hour counseling and litigation exclusively on behalf of employers, both in Florida and Puerto Rico. Pedro has extensive trial experience before both federal and local courts and administrati...

His practice focuses on Corporate Tax, Employee Benefits, Estate and Gift Taxation, Excise, Individual and Personal Property Taxes, Tax Audits, and Tax Litigation. Mr.Ruiz-Rodríguez has over 40 years of experience in the practice of law. Through the years he has advised some of the largest local and U.S. employers in Puerto Rico in the manufacturing, financial and retail sectors.

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

Maristella Collazo-Soto is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Maristella, 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 Maristella is held by other top lawyers in the same geographic and legal practice area.

Mayra Cristina Artiles Fonseca is an experienced attorney in the Corporate and Commercial Practice Group where she has successfully represented clients in a wide array of commercial and corporate transactions and disputes. Having also litigation expertise, Mayra provides comprehensive counsel to companies of all sizes on various corporate matters (from both a transactions and dispute resolution approach), helping them navigate complex legal landscapes with confidence and strategic insight. Ma...

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.

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.

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