Joseph Mamounas is a litigation attorney in Holland & Knight's Miami office and a member of the firm's Litigation and Dispute Resolution Practice. Mr. Mamounas’s practice focuses on international disputes, particularly in arbitration, and investigations. He has particular experience assisting clients with corporate fraud, Foreign Corrupt Practices Act (FCPA), and compliance matters.

Before joining Holland & Knight, Mr. Mamounas worked at the Miami office of another international law firm. During law school, he served as editor-in-chief of the University of Miami Law Review and participated in the Children and Youth Law Clinic, earning a Florida Bar Association fellowship at Legal Services of Greater Miami Inc. He has continued his community involvement since graduation, dedicating substantial time to pro bono efforts.


  • Multijurisdictional mining dispute, including ICDR arbitration: Prosecuted claims by multibillion dollar Russian agrochemicals manufacturer involving Canadian mining rights valued at more than $100 million in ICDR arbitration and related § 1782 and arbitrability proceedings pending in the U.S. District Court for the Southern District of Florida
  • ICC arbitration on behalf of multibillion dollar Spanish multinational: Represented a global Spanish conglomerate in claims valued at more than $15 million arising from its acquisition of a U.S.-based services company
  • ICDR commodities arbitration: Represented a publicly traded Russian company’s U.S. subsidiary in claims to recover payment from a Canadian entity for more than $10 million in agrochemical commodities
  • ICC arbitration and related court action on behalf of U.S. aviation services company: Represented a U.S. aviation services company in arbitration and related court action as to multimillion dollar claims against its former president and CEO
  • ICC arbitration and related court case against senior manager: Represented a U.S. aviation services company in arbitration and related court case as to claims relating to the termination of a senior manager
  • ICDR hospitality arbitration: Prosecuted claims by a Caribbean entity against diversified multinational arising from the construction of an internationally acclaimed resort, resulting in an award satisfying the full amount of the client’s claims
  • ICDR arbitration: Acted on behalf of a prominent Dominican banking executive and negotiated a full resolution before final hearing
  • ICC electronics arbitration: Prosecuted claims by an Ecuadorian electronics distributor against a Korean electronics manufacturer for breach of distribution agreement

  • Internal FCPA Investigation for Swiss global freight forwarder: Acted for a global freight forwarder in on-the-ground internal interviews and document review relating to potential violations of the FCPA and other compliance issues as part of cooperation with a U.S. Department of Justice investigation
  • Investment funds in Rothstein Ponzi scheme: Successfully defended three investment funds against investors in Scott Rothstein’s Ponzi scheme as to aiding and abetting, civil conspiracy and other claims, seeking to recover more than $43 million
  • Recovery of seized funds for Venezuelan financial-services client: Secured the return of more than $20 million for a Venezuelan financial services client in asset-forfeiture cases litigated in the Districts of Puerto Rico and Massachusetts
  • Civil RICO and securities fraud claims against business investor: Defended an individual shareholder in a Florida-based start-up business against claims of civil RICO, securities fraud and common-law fraud, valued in excess of $15 million
  • Asset-forfeiture cases for Korean distributor: Acted to recover substantial seized assets from Florida authorities on behalf of a Korean enterprise with distribution operations in Miami and the Caribbean     
  • Defense against securities fraud claims on behalf of international real estate developer: Acted for an international real-estate developer against multimillion-dollar securities fraud and other claims brought in Florida state court by an investor
  • Return of forfeited assets for Trinidadian financial services client: Represented a Trinidadian financial services company in seeking the return of a multi-million dollar asset in federal ancillary forfeiture proceedings
  • Defense of multi-billion dollar global ink manufacturing company in fraud claims: Defended one of the world’s largest manufacturers of ink and ink-related products in connection with fraudulent misrepresentation and securities fraud claims brought by a former senior manager

  • Hundreds of millions of dollars sought from Brazilian bank: Defended a major Brazilian bank against claims for more than $800 million arising from public works projects in Iraq, including the successful defense of an appeal of dismissal on forum non conveniens grounds before the Second Circuit Court of Appeals
  • Wireless e-mail technology litigation: Defended a patent holder against claims brought by alleged former partners for a share in more than $600 million in settlements and royalties
  • Theft of trade secrets lawsuit: Represented former executive and industry innovator in lawsuit valued at more than $300 million for the theft of a plan to create a new business line
  • Construction defect and consumer fraud class action: Represented a leading national homebuilder in resolving a class action that ultimately saved the client nearly $150 million in anticipated damages and attorneys' fees
  • High-value products liability and consumer fraud claims: Representing one of the world’s largest manufacturers of ink and ink-related products as to products liability, consumer fraud, and related claims against supplier valued at more than $27 million
  • Multijurisdictional fiduciary duty and conspiracy litigation: Representing the U.S. subsidiary of a global Spanish conglomerate in Florida state court as to a multimillion-dollar dispute spanning the United States and Spain and involving several former executives and shareholders
  • Defense of product defect and fraud claims: Defended one of the world’s largest manufacturers of ink and ink-related products in an action brought by a former customer. After initially demanding more than $2 million, plus punitive damages, the plaintiff ultimately agreed to dismiss the case with prejudice


  • University of Miami School of Law, J.D., cum laude
  • Cornell University, B.A., Sociology, summa cum laude
Bar Admissions/Licenses
  • Florida
Court Admissions
  • U.S. District Court for the Middle District of Florida
  • U.S. District Court for the Southern District of Florida
  • U.S. District Court for the Northern District of Florida
  • ABA Section of International Law, International Mediation Committee, Co-Chair
  • Posse Foundation, Miami Advisory Board
  • University of Miami Law Review, Alumni Board
  • The Florida Bar, Business Law Section and International Law Section
  • The Florida Bar, International Litigation and Arbitration Conference, Steering Committee, 2014
  • Miami International Arbitration Society
  • Federal Bar Association
  • American Bar Association
  • Dade County Bar Association, Young Lawyers Section
  • Brazilian-American Chamber of Commerce of Florida
Honors & Awards
  • Daily Business Review, Professional Excellence Rising Star Award, 2016
  • Florida Super Lawyers magazine, 2018, 2019
  • Rising Star, Florida Super Lawyers magazine, 2012-2017
Spoken Languages
  • English
  • French
  • Greek
  • Spanish


Speaking Engagements