Some representative examples of Guillermo's experience include:

Investment arbitration

• Representing Guatemalan and Panamanian renewable solar energy investors in multiple ICSID arbitrations against the Republic of Honduras under the DR-CAFTA and the Panama-Central America free trade agreement. *
• Successfully representing the Republic of Albania in an ICSID arbitration involving claims by a German investor under the Germany-Albania bilateral investment treaty, in relation to a concession for the operation of a port terminal. The dispute was successfully settled to the benefit of our client.
• Successfully representing Mitsui & Co. in an ICSID arbitration against Spain under the Energy Charter Treaty involving investments in the Spanish CSP sector. Currently acting for Mitsui defending the award in ICSID annulment proceedings. *
• Acting for a Spanish energy company in its US$600 million ICSID arbitration against a Latin American State, in a dispute relating to measures affecting the claimant's investments in the power-generation sector.
• Advising a multinational group on a corporate restructuring to maximize the investment treaty protection of its worldwide assets.
• Advising a Spanish investor with energy projects in Mexico to preserve its international arbitration rights in the context of Mexico's changes to the legal framework.

Commercial arbitration

• Advising a European multinational group on a dispute arising out of the O&M contract of one of Latin America's largest infrastructure projects. The dispute was successfully settled through a mediation process.
• Acting for the main contractor in one of the world's largest infrastructure projects located in Central America, in proceedings before the Dispute Adjudication Board (DAB) and related ICC arbitration against the Employer, worth in excess of US$2 billion.
• Representing a British concessionaire in a Geneva-seated ICC arbitration arising out of the EPC Contract of a US$1.2 billion motorway project in Eastern Europe.  The dispute was successfully settled to the benefit of our client.
• Successfully acting for a Belgium industrial group in a commercial arbitration in the Madrid Court of Arbitration concerning an M&A dispute.
• Serving as tribunal secretary in a Lima-seated arbitration related to a real estate and construction dispute under Peruvian law.

International Litigation

• Advising an ICSID award creditor on developing a comprehensive, multi-jurisdictional enforcement strategy against a European State.
• Successfully advising an oil and gas company in a class action before Dutch courts on a case related to the securities market.
• Successfully representing one of Spain's largest contractors defending a favorable award in annulment proceedings before the High Court of Justice of Madrid and securing the payment of said award.

(*) Ongoing