Sashmarie Z. Rivera-Lopez

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).

Her main areas of practice include banking and financial institutions, commercial financing, mergers and acquisitions, corporate reorgs, governance and public financing. She also advises clients on aspects of doing business in Puerto Rico, including fund formation (private equity and Opportunity Zone funds). Ms. Acosta regularly advises national and local banks, broker-dealers, mortgage institutions and other financial institutions (including international banking entities) and institutional ...

Marta S. Ramírez-Isern is a lawyer recognized by Best Lawyers in the practice areas of Corporate and M&A Law and Real Estate Law. Marta S. practices law in San Juan, Puerto Rico Best Lawyers has recognized Marta S. Ramírez-Isern since 2020. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Marta S. Ramírez-Isern is held by other lawyers.

Angel Rey Seijo is a lawyer recognized by Best Lawyers in the practice area of Labor and Employment Law. Angel practices law in San Juan, Puerto Rico. Angel Rey Seijo is Of Counsel at Estrella, LLC and has two decades of experience in multiple legal fields, including labor and employment law, administrative law, contracts and corporate law. Angel is strongly experienced in multiple facets of labor and employment law and human resources management, including but not limited to labor relations;...

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.

Anthony O. Maceira Zayas, Esq. , is the founder of MZLS LLC in San Juan, Puerto Rico. He has more than a decade of experience advising clients on government services, infrastructure projects, administrative law, government affairs, and business matters. Since 2010, Anthony has contributed to policy initiatives and infrastructure projects in Puerto Rico, working with public- and private-sector participants on negotiations, regulatory matters, and multimillion-dollar agreements. His practice in...

Jean G. Vidal-Font is a lawyer recognized by Best Lawyers in the practice area of Intellectual Property Law. Jean G. practices law in San Juan, Puerto Rico Best Lawyers has recognized Jean G. Vidal-Font since 2019. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Jean G. Vidal-Font is held by other lawyers.

Mariela Rexach is an experienced federal litigator with outstanding command of federal civil procedure and evidence, who practices in all areas of employment law. She has actively participated in several major cases before the U. S. District Court for the District of Puerto Rico and the U. S. Court of Appeals for the First Circuit. She has over 50 published federal cases and an outstanding summary judgment record. She has also successfully tried numerous cases before Puerto Rico courts and re...

René J. Avilés-García is a lawyer recognized by Best Lawyers in the practice areas of Employee Benefits Law, Tax Law and Trusts and Estates. René J. practices law in San Juan, Puerto Rico Best Lawyers has recognized René J. Avilés-García since 2014. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which René J. Avilés-García is held by other lawyers.

Enrique Enríquez is a lawyer recognized by Best Lawyers in the practice area of Litigation. Enrique practices law in San Juan, Puerto Rico Best Lawyers has recognized Enrique Enríquez since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Enrique Enríquez is held by other lawyers.