Strategic Legal & Business
Counsel in Puerto Rico
and Washington D.C.

Bridging the gap between law, business, and government through unparalleled real-world experience and sophisticated outsourced general counsel services
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Our Impact
Landmark Legal Victories
Advised Fortune 100 & 500 companies on market entry, licensing, and compliance in Puerto Rico across key industries.
Navigated complex federal reimbursement efforts for disaster recovery in coordination with government agencies
Set precedent in a landmark Puerto Rico Supreme Court ruling on government procurement
Transformative Business & 

Compliance Solutions
Led major public-private partnerships (P3s) across energy, transport, and infrastructure to support critical development
Secured EPA and FAA approvals on behalf of the Puerto Rico government for large-scale infrastructure projects
Delivered high-level compliance advice for Fortune 500s and gov’t agencies across U.S. jurisdictions, including Puerto Rico and Washington D.C.
Data-Driven Success

$600M+

Infrastructure value involved

160+

Years combined expertise

97%+

Long-term clients

11+

Fortune 100/500 clients

$150M+

Dispute value resolved
See full case studies
insights & NEWS
See more
Ley 47-2017: Protecciones al Paciente en Puerto Rico y Responsabilidad de las Aseguradoras
General
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Jun 7, 2025
Historic Shift: Puerto Rico’s Supreme Court Explicitly Adopts Loper Bright, Ending Judicial Deference to Agencies’ Legal Conclusions
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Jun 1, 2025
Former Deputy Solicitor General, Mabel Sotomayor Hernández, Joins MZLS Attorneys at Law, to Strengthen Appellate and Public Law Practice
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May 20, 2025
Analyzing the Legal and Compliance Implications of President Trump's April 2025 Executive Order on Trucking English Proficiency and FMCSA Enforcement
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Apr 28, 2025
Real world experience
Business &
Government
Deep experience advising public agencies and private enterprises on compliance, strategy, and complex transactions
Judiciary &
Academy
Insight rooted in judicial clerkships and academic leadership, offering both practical and principled legal perspectives
Big law &
International
Global expertise from top-tier
law firms and cross-border engagements, ensuring
world-class legal solutions
Business &
Government
Deep experience advising public agencies and private enterprises on compliance, strategy, and complex transactions
Judiciary &
Academy
Insight rooted in judicial clerkships and academic leadership, offering both practical and principled legal perspectives
Big law &
International
Global expertise from top-tier
law firms and cross-border engagements, ensuring
world-class legal solutions
CORE PRACTICE AREAS
success stories
PE Former Executive Director
COR3
MZLS provided swift and innovative legal solutions in complex cases, including FEMA arbitration and EPA negotiations for LNG-powered generators, ensuring compliance and risk mitigation.
Former General Counsel
Public Private Partnerships Authority
Anthony's extensive P3 experience was pivotal in managing contracts, drafting procurement guidelines, and securing FAA approval for airport land agreements, significantly aiding our P3 initiatives.
General Counsel
Leading Financial Institution
MZLS's expertise in acquisition laws and regulatory compliance was crucial in navigating complex procurement processes, ensuring energy projects remained on schedule and within budget.