+34 91 575 42 62
+1 (212) 461-0899


International Legal Counselor

Committed to dispute resolution and the delivery of strategic legal advice to clients on international commercial matters.

About Peter Nahmias Reiss

Thoughout his career he has handled a broad array of international commercial disputes, ranging from distribution, IP, competition law and unfair competition disputes to significant regulatory challenges against governments worldwide. In this latter regard he pioneered the use of investor state arbitration and WTO DSP for the protection of IP rights against expropriatory regulatory measures.

Bar Admission

  • Madrid, Spain (2001)
  • New York, U.S. (1990)
  • New Jersey, U.S. (1989)



2023 – present: Founder, Nahmias Dispute Resolution, Madrid, Spain – Private practice offering legal services relating to the resolution of international and domestic commercial disputes acting as arbitrator, mediator, counsel, or expert.

2015- 2023: Founder Nahmias+Partners, Madrid, Spain – Private practice providing international legal counselling to international business. Services cover areas such as: international dispute resolution, transactions, distribution, competition law, intellectual property, international trade law, regulatory compliance, international sanctions, anticorruption and other related matters.

2016 – present: Adjunct Professor, EAE Business School, Madrid, Spain – International Economics Law; International Trade and Contract Law; Public International and EU Law.

2019 – present: Adjunct Professor, Saint Louis University, Madrid. Spain – Legal Environment of Business and Online Commerce.


2019 | Adjunct Professor, Instituto de Empresa, Madrid, Spain: Law Unplugged- International Commercial Arbitration Advocacy.

British American Tobacco

2011 - 2014
2009 - 2011
2006 - 2009
2004 - 2006

Head of Legal (Regulatory Futures Department), London, UKHead of function and Global Leadership team member leading a specialist legal team providing counsel, advocacy, and engagement strategies on critical regulatory trends impacting the business.

General Counsel – Middle East Area, Dubai, UAE

Senior executive and Middle East Area business leadership team member leading the legal, corporate security and anti-illicit trade teams. Successfully drove businesses risk management processes across several highly volatile markets (including Iraq, Iran, Syria, Jordan, Lebanon, Palestine, KSA, UAE, Bahrain, Kuwait, Qatar, Oman, Yemen). Successfully defended significant product liability as well as dealer/distributor termination litigation.

Global Regulation Counsel- London, UK

Specialized lawyer providing regulatory counsel and training to end markets enabling the business to navigate increasingly challenging regulatory business environment. Pioneered strategy of utilizing IP protections of international trade and investment laws to counter regulatory proposals such as plain packaging. Led challenges to national legislation and regulation as well as EU directives banning advertising and promotion (including product display), through constitutional arguments such as violation of fundamental rights of communication and private property rights as well as public international law (TRIPS, WTO, TBT) and EU arguments (Proportionality, European Convention of Human Rights).

Legal Director, Madrid, Spain

Head of function and member of area business leadership team member, leading the legal team and compliance/businesses risk management processes in Spain, Portugal, Gibraltar, Andorra, and Azores. Led business through challenging transition to total advertising ban and ensuing price war. Successfully prosecuted significant product liability, IP infringement, advertising, dealer/distributor termination and contract litigation, including first ever private antitrust challenge against leading competitor in Portugal.

2000 – 2004 | Pernod Ricard: Legal Director, Madrid, Spain – Established new legal department, providing counsel and governance to manufacturing, marketing, and import/export activities of business. Successfully prosecuted dealer/distributor terminations, unfair competition, and trademark infringement litigation before Spanish and Portuguese Courts, including first ever legal challenge to outdoor alcohol advertising ban in Spain.

1998- 2000 | Decathlon España: Legal Counsel, Madrid, Spain – Providing corporate and commercial law counselling. Successfully negotiated and consummated key real estate transactions, including opening new stores in Andalucía, Pais Vasco, and Galicia.



  • Curso de Experto en Mediación Civil, Mercantil y Familiar, (100hr) Escuela Internacional de Mediación (Madrid, June 2023).
  • NYSBA Advanced Commercial Mediation Training, presented by Simeon Baum and Stephen Hochman approved under Part 146 of the Rules of the Chief Administrative Judge (New York, May 2023).
  • NYSBA Commercial Mediation Training, presented by Simeon Baum and Stephen Hochman approved under Part 146 of the Rules of the Chief Administrative Judge (New York, October 2022)
  • The Phoenix Dispute Solutions Limited (PDSL) Mediation Training Programme (40 hr)- an International Mediation Institute, Civil Mediation Council and CIArb approved training provider (London, UK) (2022).
  • The Phoenix Dispute Solutions Limited (PDSL) NY Mediation Training Programme (40 hr) (London, UK) (2022).


  • CIArb Module 3 – International Arbitration: Evidence, Decision Making and Award Writing, Chartered Institute of Arbitrators (London, UK) (2021).
  • CIArb Module 2- Contract and Tort law, Chartered Institute of Arbitrators (London, UK) (2021).
  • CIArb Module 1- Advanced Course on International Commercial Arbitration, CEU San Pablo University and the Center for International Arbitration, Mediation and Negotiation (CIAMEN) in collaboration with the Chartered Institute of Arbitrators (Madrid, Spain) (2018).


  • Spanish Law Degree (“Licenciatura en Derecho”) – Spanish Ministry of Education (Madrid, Spain) (2000).
  • LLM, Corporate Counseling, (“Master Asesoría Jurídica de Empresa”) Instituto de Empresa (Madrid, Spain) (1998).
  • Juris Doctor, Fordham University School of Law (New York, NY) (1989)
  • Bachelor of Arts, Political Science, Rutgers, The State University of New Jersey (New Brunswick, NJ) (1986).


  • Active (for oral hearings): English (native), Spanish (fluent), French (intermediate).
  • Passive (for reading documents): English (native), Spanish (fluent), French (intermediate).
  • Drafting (for writing Awards/Decisions/etc.): English (native), Spanish (fluent).