Ius + Aequitas | Despacho de abogados en Madrid y Santander

Eliseo M. Martínez

Eliseo M. Martínez is the Managing Partner of Ius + Aequitas and leads several practice areas within the firm, including International Arbitration, Competition Law, Insolvency, Economic Criminal Law, and Intellectual Property. He has been recognized multiple times in prestigious rankings such as Chambers, Legal 500, Leaders League, and Best Lawyers. Additionally, Eliseo is a member of various global institutions and organizations, including the ICC (International Chamber of Commerce) and the IBA (International Bar Association), among others.

Managing Partner

Information

BIO

Eliseo M. Martínez, with nearly 20 years of experience as a litigator, has handled close to three thousand cases and leads the strategy for high-profile matters across his multiple areas of expertise. Since 2011, he has been the Managing Partner of Ius + Aequitas.

 

Throughout his career, he has represented national and international banks, financial and investment institutions, consumer organizations, and various personalities from the cultural and social spheres. Many of the cases led by his firm are among the most high-profile in Spain, including:

 

  • Representation of shareholders in civil and criminal actions in the Banco Popular-PwC and Abengoa cases.

  • Representation of the Brazilian investment fund D.I.S and the Brazilian Federation of Professional Footballers (FAAP) in the Neymar case, against footballer Neymar Jr. and FC Barcelona.

  • Insolvency administration of Ausbanc and Vértice360.

  • Arbitration at the International Chamber of Commerce (ICC) in the case "Hyundai Engineering & Construction Co. Ltd. vs. OAS", related to the Chacao Bridge in Chile.

On the international stage, Eliseo M. Martínez represents Ius + Aequitas as the local partner in Spain for the international law firm Díaz, Reus & Targ, Attorneys & Counselors, LLP, headquartered in Miami with a presence in 26 countries. Additionally, he played a key role in establishing the joint venture between Ius + Aequitas and the prestigious auditing firm Baker Tilly International for insolvency administration.

 

He holds an LL.M. in U.S. Law from Washington University in St. Louis (School of Law) and practices as a trilingual litigator and international arbitrator (English, French, and Spanish). He is internationally recognized as a top-tier expert in civil and common law arbitration and is a sought-after speaker at global forums. He also teaches Intellectual Property, Legal Practice, and Arbitration at Spanish universities such as ICADE, Villanueva-Complutense University of Madrid, and Carlos III University.

 

Beyond his legal career, Eliseo M. Martínez is actively involved in the cultural and media landscape in Spain, participating in conferences and interviews. Since 2010, he has been part of the editorial team of the cultural and social magazine “Anoche tuve un sueño” and serves as a Trustee for the International "Optimistas Comprometidos" Awards in the Freedom of Expression category. This award has recognized figures such as Raif Badawi (imprisoned Saudi writer), Leopoldo López (Venezuelan politician), and Malgorzata Gersdorf (former President of the Supreme Court of Poland, sanctioned for her defense of judicial independence).

 

With a career marked by leadership in high-impact litigation and a strong international presence, Eliseo M. Martínez continues to solidify his reputation as a leading figure in global litigation and arbitration.

AREAS

  • Class Actions and
  • Large-Scale Litigation
  • Economic Criminal
  • Law
  • Insolvency and Restructuring
  • International Arbitration
  • Intellectual Property and Competition Law
  • Administrative Litigation
  • Franco-British Legal Matters

FORMATION

  • LL.M. in U.S. Law from Washington University in St. Louis (School of Law)
    Bachelor’s Degree in U.S. Law from Washington University in St. Louis (School of Law)
  • Member of the Illustrious Bar Association of Madrid (ICAM) since 2002
  • Spanish and International Baccalaureate (I.B. - Spain - Switzerland)
 
 
 
 
 
 

RANKINGS

  • 2024: Chambers Global – Recognized in Dispute Resolution
  • 2024: Chambers Europe – Recognized in Corporate Crime and Dispute Resolution
  • 2024: Legal 500 Europe – Leading Individual in Dispute Resolution and recognized in Corporate Crime
  • 2024: Leaders League – Recognized in White-Collar Crime and Restructuring & Insolvency
  • 2023: Leaders League – Recognized in Restructuring & Insolvency
  • 2023: Best Lawyers – Recognized in Arbitration and Mediation, Criminal Defense, Insolvency and Reorganization Law, and Intellectual Property Law in Spain
  • 2023: Leaders League – Recognized in International Arbitration, Restructuring & Insolvency, and White-Collar Crime
  • 2023: Chambers Global – Recognized in Dispute Resolution
  • 2023: Chambers Europe – Recognized in Dispute Resolution (Band 5) and Dispute Resolution: Corporate Crime (Band 3)
  • 2023: Legal 500 – Included in the Arbitration category in the POWERLIST IBERIA
  • 2022: Best Lawyers – Included in the Criminal Defense category in Spain
  • 2022: Chambers Global – Recognized in Dispute Resolution (Band 5) in Spain
  • 2022: Leaders League – Listed as Highly Recommended in White-Collar Crime and International Arbitration in Spain
  • 2021: Chambers Europe – Included in Dispute Resolution (Band 5) in Spain
  • 2021: Leaders League – Recognized as Recommended in White-Collar Crime in Spain
  • 2020: Chambers Europe – Included in the Dispute Resolution category in Spain: "Eliseo Martínez deserves praise for his «exquisite and powerful argumentative ability»." "He advises clients on banking litigation as well as criminal proceedings related to money laundering, embezzlement, and tax fraud."
  • 2020: Chambers Global – Ranked in the Dispute Resolution category in Spain
  • 2020: Legal 500 – Included in the Dispute Resolution category in Spain: "Eliseo M. Martínez, an excellent managing partner, leads his team and provides deep knowledge and creativity in international litigation."
  • 2020: Legal 500 – Ranked in the Economic Crime category in Spain: "International litigator Eliseo M. Martínez is actively involved in a number of corporate crime cases."
  • 2020: Best Lawyers – Ranked in Criminal Defense in its Spanish Directory
  • 2019: Chambers Global – Recognized as a Notable Practitioner in the Dispute Resolution category in Spain
  • 2019: Chambers Europe – Recognized as a Notable Practitioner in the Dispute Resolution category in Spain
  • 2018: Chambers Global – Recognized as a Notable Practitioner in the Dispute Resolution category in Spain
  • 2018: Chambers Europe – Recognized as a Notable Practitioner in the Dispute Resolution category in Spain

MEMBERSHIP

Member of:

  • Illustrious Bar Association of Madrid (ICAM), since 2002

  • International Chamber of Commerce (ICC), Paris, France

  • IBA, International Bar Association, London, UK

  • Association Droit et Commerce, Paris, France

  • UIA (Union Internationale des Avocats), Paris, France

  • CCI France-Spain, La Chambre, Paris, France

  • Spanish Arbitration Club (CEA), Madrid, Spain

  • Adigital, Spanish Association of the Digital Economy, Madrid, Spain

  • CCBE, Brazil-Spain Chamber of Commerce

  • Foro Sociedad Civil, Madrid, Spain

  • Insolvency Administrator in the following jurisdictions (Dean's Lists): Courts of Madrid, Toledo, Segovia, Guadalajara, Cuenca, Ávila, Valladolid, Valencia, Barcelona, and Cantabria

 

Arbitration Roles:

  • European Arbitration Association, Madrid, Spain

  • Franco-Spanish Arbitration Committee, CCI-Chambre France-Spain, Paris, France

  • Arbitration Court of the Chamber of Commerce, Industry, and Services of Madrid, Madrid, Spain

  • CAESP, Arbitration Council of the State of São Paulo, Brazil

Academic Activities (CV):

Professor of:

  • Master’s Program in Intellectual Property at Carlos III University, Madrid

  • Master’s Program in International Legal Advisory at Villanueva University, Madrid

  • Master’s Program in Legal Practice at Villanueva University-Complutense University, Madrid

  • Master’s Program in Intellectual Property at ICADE University, Madrid

Invited Speaker at:

  • International Association of Young Lawyers (AIJA) Conference: Cross-border Disputes 2020: What to Expect in the Coming Decade, Miami (2019): Evidence in International Litigation: Confidentiality at Stake

  • 37th Cambridge International Symposium on Economic Crime, organized by the Centre for International Documentation on Organized and Economic Crime (CIDOEC): Fighting Economic Crime, a Shared Responsibility, Jesus College, Cambridge (2019): Improving the Flow of Information Between the Public and Private Sectors

  • Congress of the Brazilian Legal Profession, held at the University of Seville, Seville (2019)

  • PUC-Campinas Law School: Masterclass on Actions to Defend Intellectual Property Rights, São Paulo, Brazil (2017)

Board Member Roles:

  • Vice-Secretary of FORO SOCIEDAD CIVIL, Madrid, Spain

  • Appointed by the ICC (International Chamber of Commerce) as a member of the working group Addressing Issues of Corruption in International Arbitration, representing the National Committee of Spain (EU)

  • Member of the Editorial Team of the Spanish cultural and social magazine ANOCHE TUVE UN SUEÑO (Last Night I Had a Dream) and Sponsor of the Committed Optimists International Awards

  • Member of the Board of Trustees of the FUNDACIÓN ALFONSO MARTÍN ESCUDERO (a non-profit NGO dedicated to research, promotion, and funding of education and scientific research, focused on advancing and supporting projects in Law and Society in Spain), 2007–2010

LANGUAGES

  • Español
  • Inglés
  • Francés