Gretchen M. Méndez-Vilella

Leslie Y. Flores-Rodríguez is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice and Litigation. Leslie Y., 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 Leslie Y. 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...

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...

Carlos P. Santiago-Sarkis is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law and Corporate and M&A Law. Carlos P., 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 Carlos P. is held by other top lawyers in the same geographic and legal practice area.

Mr. Fernández-Lugo Chairs McConnell Valdés' Environmental, Energy & Land Use Practice Group. He represents clients before local and federal agencies with jurisdiction over environmental, energy and land use matters, such as the U.S. Environmental Protection Agency, the U.S. Army Corps of Engineers, the Environmental Quality Board, the Department of Natural and Environmental Resources, the Solid Waste Management Authority, the Puerto Rico Electric Power Authority, the State E...

Mr. González’s practice consists of counseling clients as well as federal and state litigation in several areas. Mr. González represents employers before the Equal Employment Opportunity Commission, Antidiscrimination Unit and defending employers sued under various federal and state laws, including Title VII, the Americans with Disabilities Act, the Age Discrimination in Employment Act, Employee Retirement and Income Security Act, and other employment laws and regulations....

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.

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...

Antonio L. Collazo-Bennazar is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law and Land Use and Zoning Law. Antonio L., 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 Antonio L. is held by other top lawyers in the same geographic and legal practice area.

Mr. Juan J. Casillas-Ayala, Esq. is an Attorney at Casillas, Santiago & Torres, LLC, where he specializes in Labor & Employment and Commercial Litigation. He was a shareholder in the Labor and Employment division of a major law firm in Puerto Rico, where he further sharpened his litigation skills during his 11 years tenure at the firm. Prior to this, he served as law clerk at the Court of Appeals with now Supreme Court Justice Rafael Martínez-Torres and subsequently at the Supreme Co...