Diego Pérez Ara

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Mr. Pérez Ara has over a decade of experience navigating domestic and international disputes from inception through trial. He has successfully defended and prosecuted contract, non-compete, copyright, trademark, business torts and related matters. Mr. Pérez Ara has also handled international disputes, with a focus on Latin America, in energy, real estate, infrastructure and other industries, and both for and against sovereign governments.

Prior to joining León Cosgrove Jiménez, LLP, Mr. Pérez Ara worked at a large international law firm in New York and clerked for the Hon. Kathleen M. Williams, U.S. District Judge of the U.S. District Court for the Southern District of Florida. While attending BU Law School, he was a research assistant for international arbitrator William (“Rusty”) Park and a teaching assistant for the BU Law LLM writing program.

Previously, Mr. Pérez Ara worked as a litigation associate in a major Venezuelan law firm in Caracas, focusing on international litigation and administrative law. As a civil law-trained lawyer, he has appeared before the Constitutional and Political-Administrative Chambers of the Supreme Court of Justice in Venezuela and before Superior and Trial Courts in Civil, Commercial, Labor and Administrative matters.


Represented a major entertainment company in a federal copyright action in the Southern District of New York and the Central District of California.

Represented three separate Saudi Arabian entities in two ICC arbitrations against a Latin American OCTG supplier, with total claims exceeding US$100M.

Co-led internal investigation of global company in Latin America.

Represented a Jamaican oil & gas company in arbitration disputes over fuel supplies to power barges.

Represented the Government of Mongolia in defending enforcement of an UNCITRAL and Energy Charter Treaty arbitration award relating to uranium mining rights.

Represented an Oklahoma Coal Plant in an AAA arbitration involving a Point-To-Point Transmission Service Agreement.

Successfully represented global company in action to collect evidence for use in foreign proceedings under 28 U.S.C. § 1782.

Represented death row inmates in Florida and Mississippi in post-conviction proceedings.

Practice Areas

Commercial Litigation

International Dispute Resolution

Honors & Awards

National Representative (Venezuela), International Bar Association (IBA), Young Lawyers’ Committee (YLC)

Edward C. Stone Moot Court Competition Best Brief Award

BU LL.M. Scholar

Ucabista Integral Award

Court Admissions


New York



J.D., Boston University School of Law, 2014

LL.M., Boston University School of Law, 2012

LL.B., Universidad Católica Andrés Bello, Caracas, Venezuela, 2010


English, Spanish, French