The New Framework between Mexico and the European Union for Investment Protection and Dispute Resolution

The New Framework between Mexico and the European Union for Investment Protection and Dispute Resolution

1. Scope and Status of the Instruments

On May 22, 2026, Mexico and the European Union (hereinafter, the “EU”) signed the Modernized Global Agreement (hereinafter, the “MGA”) and the Interim Trade Agreement (hereinafter, the “iTA”). The signature of both instruments does not entail their immediate entry into force: the MGA and the iTA are subject to the applicable internal procedures of each party and, therefore, their effects must be analyzed under a differentiated implementation structure. The key point is that the MGA would replace, once ratified, the Economic Partnership, Political Coordination and Cooperation Agreement currently in force since 2000, while the iTA would allow the application of trade matters falling within the EU’s exclusive competence to move forward earlier.

By way of context, the original agreement was signed in 1997 and entered into force in 2000; unlike the new MGA, it did not include a comprehensive investment protection regime. At the same signing ceremony, the parties also signed a letter of intent to conduct a political and strategic dialogue between Mexico and the EU, which is relevant to the institutional context but does not, by itself, alter the analysis of the investment chapter.

The European Commission identifies the MGA as the instrument that would include the political and cooperation pillar, as well as the trade and investment pillar, including investment protection provisions. By contrast, the iTA would cover only the trade parts of the MGA that fall within the EU’s exclusive competence; it would also expire and be replaced by the MGA once the latter fully enters into force.

The practical relevance of the new framework would not be limited to trade modernization. In investment matters, once applicable, the MGA would replace the traditional protection model under bilateral investment treaties between Mexico and several EU Member States with an institutionalized dispute settlement regime through an Investment Court System (hereinafter, the “ICS”).

2. Two-Track Entry into Force

The implementation structure distinguishes between the iTA and the MGA. The iTA covers matters falling within the EU’s exclusive competence and could enter into force within a shorter timeframe, once the parties complete their internal procedures and exchange the corresponding notifications. At the EU level, the European Commission has stated that the iTA would require the consent of the European Parliament and the adoption of a Council decision concluding the agreement. As from its entry into force, the iTA would function as a transitional instrument and, with respect to the matters it covers, would replace the trade provisions of the currently applicable framework until it is replaced by the MGA.

The MGA would require a broader process. The European Commission has stated that, following signature, the MGA is subject to the corresponding adoption and ratification processes, including the involvement of the European Parliament and ratification by the EU Member States in accordance with their national procedures. In Mexico, the approval of international treaties would correspond to the Senate of the Republic, pursuant to Article 76, Section I, of the Political Constitution of the United Mexican States.

The practical consequence is that the iTA could enter into force faster than the MGA, while the full entry into force of the MGA would depend on the completion of broader legislative and parliamentary processes. Therefore, investment analysis should distinguish between trade benefits that may be implemented earlier and investment protection rules that could remain subject to a longer timetable or to provisional application, if so agreed.

Additionally, certain political dialogue and cooperation provisions of the MGA could be applied provisionally if the parties so agree, without this implying the full entry into force of the agreement or necessarily the early application of investment protection provisions.

3. Replacement of Bilateral Investment Treaties and Transitional Regime

The MGA would have a direct regulatory impact on the 14 bilateral investment treaties currently in force between Mexico and EU Member States (hereinafter, the “BITs”), including those entered into with Germany, Austria, Belgium-Luxembourg, Denmark, Spain, Finland, France, Greece, Italy, the Netherlands, Portugal, the Czech Republic, Slovakia, and Sweden. Pursuant to Article 10.54 of the MGA, on the date of entry into force of the agreement, the treaties listed in Annex 10-C would cease to have effect and would be replaced by the MGA.

The transition could also be brought forward through provisional application. Article 10.54(2) provides that, if the provisional application of the MGA covers the investment protection and dispute settlement sections, the application of the treaties listed in Annex 10-C would be suspended from the date of such provisional application. If provisional application ends without the MGA entering into force, the suspension would cease and the treaties would resume their effects.

Article 10.54 itself would preserve a transitional window for claims under the BITs. A claim could be submitted under the relevant bilateral treaty if it arises from an alleged breach that occurred before the suspension or, as the case may be, before the entry into force of the MGA, provided that no more than three years have elapsed from the applicable suspension or entry into force.

This design would require a distinction between existing investments, potential disputes arising before the suspension of the BITs, and claims arising during any provisional application of the MGA. The window of access to the BIT mechanisms could close before full ratification of the MGA if provisional application includes the relevant investment sections.

4. Investment Protection Standards

The MGA would preserve investment protection standards, including fair and equitable treatment, full protection and security, national treatment, most-favored-nation treatment, and protection against expropriation, but with a more limited design than that provided in several traditional BITs. With respect to fair and equitable treatment, Article 10.15 would limit breach of the standard to specific circumstances, including denial of justice, fundamental breach of due process, manifest arbitrariness, harassment, coercion, or abuse of power, as well as additional elements that the parties may adopt under the agreement itself.

Article 10.15 would also provide that legitimate expectations may be considered when a party made a specific representation to induce the investment and subsequently frustrated it; however, it would clarify that the mere fact that an action or omission is inconsistent with the investor’s legitimate expectations would not, by itself, constitute a breach of the standard, even if there is loss or damage to the investment.

With respect to expropriation, Article 10.18 would provide that a party could not expropriate or nationalize a covered investment, directly or indirectly, except for a public purpose, in a non-discriminatory manner, through prompt, adequate, and effective compensation, and in accordance with due process. This approach should be analyzed together with the specific rules of the MGA and its annexes on expropriation.

5. New Dispute Settlement Mechanism: Investment Court System

The MGA would replace, once applicable, the traditional investor-State arbitration model with the ICS. Pursuant to Article 10.30, a permanent tribunal would be established to hear investment claims; its members would be appointed by the Joint Council. The tribunal would be composed of nine members: three nationals of Mexico, three nationals of EU Member States, and three nationals of third countries, appointed for a five-year term. The tribunal would hear cases in divisions of three members, with a composition that would include one national of an EU Member State, one national of Mexico, and one national of a third country.

Article 10.31 would establish a permanent Appeal Tribunal to review awards issued by the tribunal of first instance. The Appeal Tribunal would be composed of six members: two nationals of Mexico, two nationals of EU Member States, and two nationals of third countries. Grounds for appeal would include those provided for annulment of awards under Article 52 of the ICSID Convention, errors of law, and manifest errors of fact, including the appreciation of domestic law. In addition, Article 10.49 would provide that either disputing party could appeal within 90 days following the issuance of the award and that, as a general rule, the appeal proceeding should not exceed 180 days, and in no case should it exceed 270 days.

The ICS would reduce the procedural autonomy that characterizes traditional ad hoc arbitration. Instead of tribunals constituted case by case by the parties, the MGA would establish an institutional mechanism with permanent members, rotating composition, and an appeal tribunal. This could generate greater jurisprudential consistency, but also less control by the parties over the composition of the decision-making body.

The new mechanism would also reinforce procedural transparency by establishing an institutional framework with greater public access to procedural acts, documents, and hearings compared to traditional investor-State arbitration, where openness would depend to a greater extent on the applicable rules and the procedural conduct of the parties.

6. Procedural Rules Affecting Claim Strategy

The MGA would introduce a prior consultation stage. Pursuant to Article 10.22, consultations would have to be held within 60 days following the request, unless the parties agree on a longer period. The request would have to contain specific information regarding the claimant, the provisions allegedly breached, the legal and factual basis of the claim, the challenged measures, the damage claimed, and evidence of the investment.

Article 10.22 would also provide that the request for consultations would have to be submitted within three years from the date on which the investor became aware, or should have become aware, of the alleged breach and the corresponding damage. In disputes against the EU or a Member State, where domestic proceedings have been pursued with respect to the same measures, the MGA would provide specific rules for calculating the period, while maintaining an absolute limit of ten years. In addition, if the investor does not submit the claim within 18 months after the request for consultations, the request would be deemed withdrawn with respect to the same measures, unless an extension is agreed.

Article 10.25 would introduce a broad waiver and withdrawal requirement. To submit a claim to the tribunal, the investor would have to withdraw from existing proceedings and waive in writing the right to initiate proceedings before domestic or international courts or tribunals with respect to the same measures. This requirement would extend, in certain cases, to the local enterprise and to persons with an economic interest in it.

Article 10.24 would regulate the determination of the respondent when the dispute involves the EU or a Member State. If the EU does not inform within 60 days whether it or the relevant Member State will act as respondent, the investor could proceed in accordance with the identification rules set forth in that article.

The MGA would also incorporate anti-abuse and third-party funding rules. Article 10.25 would exclude claims based on investments made through fraud, corruption, or abuse of process, while Article 10.29 would require disclosure of the identity and address of the third-party funder upon submission of the claim or, if the funding arrangement is entered into later, without delay.

7. Practical Implications for Investors

Investors with structures between Mexico and the EU should review which instrument currently protects each investment, particularly where coverage exists under any of the BITs that could be replaced or suspended by the MGA. This review should include corporate nationality, investment vehicle, investment date, host jurisdiction, applicable treaty, available standards, dispute settlement clauses, and potential claim deadlines.

Potential disputes should be mapped as a priority. If the relevant State conduct occurred before the suspension of a BIT or before the entry into force of the MGA, the claim could fall within the three-year transitional window provided in Article 10.54. The decision to initiate consultations, preserve evidence, or submit a claim may depend on the date of the measure, the damage, the investor’s knowledge, and the possible provisional application of the MGA.

Corporate structures should also be reviewed in light of the anti-abuse rules, the waiver of parallel proceedings, and the extension of withdrawal requirements to local enterprises or persons with an economic interest. Restructurings carried out when the dispute already exists or is reasonably foreseeable could face jurisdictional or admissibility objections under the new regime.

In third-party funded claims, the obligation to disclose the funder must be incorporated from the design stage of the case. The identity of the funder, the general funding terms, the negotiation strategy, and coordination with transparency obligations may affect procedural strategy and potential settlement negotiations.

8. What Comes Next?

Follow-up should focus on the ratification of the MGA, the approval and entry into force of the iTA, any decision on provisional application of the MGA, the scope of such provisional application with respect to the investment chapter, and the date from which the BITs would be suspended or replaced.

The establishment and composition of the permanent tribunal and the Appeal Tribunal, the adoption of supplementary rules by the Joint Council, the implementation of transparency procedures, and the evolution of any project toward a Multilateral Investment Court should also be monitored. Article 10.33 provides that, if a multilateral investment dispute settlement mechanism enters into force between the parties, the applicable provisions of the MGA will cease to apply in favor of that mechanism.

The International Arbitration and Investment practice area remains available to assess the effect of the MGA and the iTA on investment structures, applicable treaties, potential claims, deadlines for preserving rights, and investor-State dispute settlement strategies.