Mariola’s practice centers on complex federal and appellate litigation involving regulatory enforcement, administrative law, and compliance disputes. She advises clients on federal oversight, healthcare, and economic-development matters, often at the intersection of local and federal regulatory regimes. Her work includes developing litigation strategy, drafting dispositive and appellate briefs, and managing discovery and settlement negotiations in high-stakes proceedings. Before joining MZLS, Mariola served as Assistant Solicitor General of Puerto Rico, where she represented the Commonwealth and its instrumentalities in significant federal-court litigation and appeals. Among her cases, she was part of the legal team that defended Puerto Rico in the Roberto Clemente intellectual-property and regulatory-takings litigation (Clemente v. Puerto Rico, 1st Cir. No. 23-1922), addressing Lanham Act and Takings Clause issues arising from official government programs. Earlier in her career, Mariola practiced with leading Puerto Rico firms, including Pietrantoni Méndez & Álvarez LLC and Adsuar Muñiz Goyco Seda & Pérez-Ochoa, PSC, handling commercial disputes, securities arbitration, and compliance-related litigation before federal and territorial courts. She also clerked for Chief Judge Dora L. Irizarry of the U.S. District Court for the Eastern District of New York, assisting in drafting judicial opinions and analyzing regulatory enforcement matters. Representative Experience Represents private and public clients in federal litigation and appeals involving regulatory enforcement, administrative compliance, and complex commercial disputes. Defended the Commonwealth of Puerto Rico in Clemente v. Puerto Rico (1st Cir. No. 23-1922), addressing Lanham Act and Takings Clause claims related to the Roberto Clemente commemorative program. Advises on federal-compliance litigation involving healthcare, energy, and economic-development sectors. Managed multi-party arbitration and mediation proceedings before FINRA and AAA. Drafted and argued dispositive motions in U.S. District Court and First/Second Circuit appeals.