Antitrust | Pérez-Llorca, Despacho de abogados

Mexico Introduces New Merger Filing Fee Framework

mariajose.canal — Mon, 22 Dec 2025 19:41:50 +0000

Effective December 19, 2025, merger notifications filed in Mexico are subject to a new filing fee framework implemented by the National Antitrust Commission (CNA). The applicable fee is determined based on the Maximum Estimated Value (MEV) of the transaction in Mexico and must be paid upon filing, regardless of the complexity, duration, or outcome of the review process. The MEV is calculated by assessing various valuation parameters, including the transaction value and the Mexican assets or equity interests involved, and must reflect the highest resulting value.

This new framework has a direct impact on transaction structuring, timing, and regulatory strategy, making early MEV analysis a critical component of deal planning.

Consult the full content of the Legal Briefing here.

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Pérez-Llorca strengthens its Mexico office with the promotion of Antonio De Lisi, Patricio Martínez and Enrique Muñoz as new partners

mariajose.canal — Mon, 15 Dec 2025 16:24:55 +0000

The new appointments strengthen the firm’s capabilities in transactional, regulatory, antitrust and key areas for highly regulated sectors
The promotions are part of Pérez-Llorca’s overall process of strengthening talent and expanding its business, with 12 new partners and five counsels appointed in Spain, Mexico and Colombia

Pérez-Llorca announced the promotion of Antonio De Lisi, Patricio Martínez and Enrique Muñoz as new partners in the Mexico City office, consolidating the firm’s sustained growth in the country and strengthening its capabilities in some of the most in-demand practices for local and international clients.

With more than 20 years of international and national experience, Antonio De Lisi has led multidisciplinary teams in complex transactions, including project, structured, and corporate financing; infrastructure and energy project development; strategic alliances; and mergers and acquisitions. He regularly advises banks, funds, sponsors, and public and private companies on complex and large-scale operations, as well as project development, tenders, joint ventures and structured transactions in various segments of the energy sector, as well as providing ongoing regulatory support for strategic assets.

Patricio Martínez, who also has over two decades of experience, has led Pérez-Llorca’s Antitrust and Data Protection, AI and Cybersecurity practices in Mexico for the past year and a half. He has advised global firms on complex cross-border mergers and acquisitions, with a special emphasis on merger control, as well as on investigations and comprehensive regulatory compliance projects. His work includes the incorporation of technological tools to optimise the review of operations and strengthen privacy and data management frameworks.

Enrique Muñoz, with more than 20 years of experience in environmental, health and regulatory law, has worked for various industries, including chemicals, pharmaceuticals, food and beverages, energy, mining, tourism and health services. His practice includes advising and consulting on environmental impact, atmospheric emissions, hazardous waste, hazardous materials, and national waters, as well as managing authorisations, licences and permits before authorities such as SEMARNAT, COFEPRIS and ASEA, and advising on health regulations for products and services.

“These promotions reflect the firm’s commitment to merit, talent development and excellent service. Antonio, Patricio and Enrique have demonstrated high technical rigour, leadership and strategic vision that contribute decisively to the strengthening of our practices in Mexico,” added Jorge Mondragón, partner and Country Chair of Pérez-Llorca Mexico.

The promotion of the three new partners is part of the overall process of strengthening Pérez-Llorca’s talent pool. The firm has announced the promotion of 12 new partners in Spain, Mexico and Colombia, consolidating its structure in key areas such as Corporate, Finance, Tax, Administrative, Competition and Regulatory. In addition, five counsels were also promoted in various jurisdictions.

These promotions are in addition to the growth recorded in Mexico during 2025, in which the firm added nine new partners as a result of seven strategic integrations and two internal promotions. This move reaffirms Pérez-Llorca’s priority to strengthen its presence in the country, expand its local capabilities and support multi-jurisdictional transactions in line with its international strategy.

London Office

After seven years at the helm of the London office, the first opened by Pérez-Llorca in foreign territory, Álvaro Ramírez de Haro will hand over the reins to José Luis Romeu, a partner who has been working there since the beginning of 2024.

Ramírez de Haro will return to Madrid, where he will continue to work closely with the London office through his work with major international funds and firms.

Likewise, Ander Valverde, a partner based in London since 2022, who has combined his responsibility for the Finance team in Spain with the development of the firm’s debt practice in London, will return to Spain in April 2026, where he will continue to coordinate the Finance practice in Madrid and remain linked to the London office through the firm’s clients in this key financial centre for this practice.

Pérez-Llorca’s London office has a team of more than 10 people which, alongside José Luis Romeu, includes partners Isabel Villa (Restructuring) and the recently appointed Melchor Álvarez de Mon (Corporate), who joins the team in the British capital to further bolster this location.

José Luis Romeu joined Pérez-Llorca in 2017 as a lawyer in the Corporate practice and made partner in January 2024. Specialising in commercial law, his career has a strong international flavour as, in addition to an LL.M. in International Business and Economic Law from Georgetown University, he worked in the firm’s London office in 2019 and 2020 and is also a Solicitor of England and Wales.

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Pérez-Llorca promotes 12 new partners

Mónica Moreno — Mon, 15 Dec 2025 12:12:01 +0000

These appointments strengthen the Administrative, Competition, Corporate, Finance, Tax and Regulatory practice areas
The firm has also promoted five lawyers from Spain and Colombia to counsels
José Luis Romeu will take over the London office of the firm in the first quarter of 2026

Pérez-Llorca today announced the promotion of twelve professionals to partner in recognition of their track record, commitment, technical excellence and contribution to the growth of the firm. This move bolsters the firm’s leadership and commitment to developing talent in its various offices. Specifically, the new partners are based in the Madrid, Mexico City and Bogotá offices and will strengthen different strategic practice areas for the firm.

The Pérez-Llorca professionals who will become partners as of 1 January 2026 are:

Melchor Álvarez de Mon (Corporate, London)
Antonio De Lisi (Corporate, Mexico City)
Iciar de Lorenzo (Corporate, Madrid)
Francisco Gómez (Corporate, Madrid)
Eugenio Marín (Finance, Madrid)
Ángel Martín (Corporate, Madrid)
Patricio Martínez (Competition, Mexico City)
Enrique Muñoz (Regulatory, Mexico City)
Antonio Ruiz (Tax, Madrid)
Paola Valderrama (Corporate, Bogotá)
Belén Wert (Administrative, Madrid)
Yi Zhou (Tax, Madrid)

In addition, the firm has promoted Daragh Brehony (Litigation and Arbitration, Madrid), Eva del Amo (Real Estate, Madrid), Antonio García (Real Estate, Madrid), Nuria García (Real Estate, Madrid) and María Camila Parra (Real Estate, Bogotá) to counsels.

These appointments reflect Pérez-Llorca’s objective to drive internal growth, recognise in-house talent and strengthen its leadership structure in the face of current and future challenges in the legal market.

“We thank these professionals for their commitment, effort and dedication, and we are confident that, with the drive of this new generation of partners, our ability to serve our clients and our global reach will be further strengthened,” said Pedro Pérez-Llorca, Senior Partner of Pérez-Llorca.

London Office

Ramírez de Haro will return to Madrid, where he will continue to work closely with the London office through his work with major international funds and firms.

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Budget, the first challenge for the new antitrust authority

mariajose.canal — Wed, 22 Oct 2025 20:03:49 +0000

Martínez cautioned that although the incoming authority will have expanded mandate and shorter investigation timelines (cut from 600 to 450 days for mergers), it begins with a constrained budget, which could restrict its operational capacity and the thoroughness of its reviews. He notes that companies should monitor not only the legal framework, but also the resources available to the regulator in order to anticipate review risks and avoid regulatory surprises.

Read the full interview in El Economista here.

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Mexico’s New National Antitrust Commission Board – What It Signals and What to Watch

mariajose.canal — Wed, 15 Oct 2025 23:17:39 +0000

The CNA’s composition blends technical continuity, institutional experience, and new multidisciplinary perspectives driven by the federal administration. This Legal Briefing examines the profiles of the new commissioners, the potential regulatory approaches of the new authority, and the implications this transformation may have for Mexico’s business and compliance environment.

Consult the full content of the Legal Briefing here.

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Mexico’s antitrust reform sparks debate over independence and efficiency

mariajose.canal — Wed, 17 Sep 2025 19:17:49 +0000

During his remarks, Patricio Martínez emphasized that, while the shortened timelines for merger clearances could streamline the market, their effectiveness will depend on how the new authority handles information requests, as well as on the need to preserve technical autonomy to maintain investor confidence.

This interview highlights the challenges faced by the new institutional framework in balancing efficiency with legal certainty in an increasingly competitive environment.

Read the full interview on Latin Lawyer here.

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Farewell to Cofece: the National Antitrust Commission is born, aiming to apply higher fines

mariajose.canal — Thu, 17 Jul 2025 18:54:55 +0000

Our counsel Patricio Martínez speaks with El Financiero about the creation of the National Antitrust Commission and the implications of its implementation under the recent reform to the Federal Economic Competition Law. In the interview, Patricio highlights the increase in fines, the restructuring of the regulatory authority, and the potential impact of its alignment with the Executive Branch.

Consult the full content of the interview here.

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The recent reform to Mexico’s Federal Economic Competition Law updates the merger filing thresholds, significantly expanding the number of transactions subject to prior authorization.

mariajose.canal — Fri, 11 Jul 2025 17:39:44 +0000

On June 30, 2025, Mexico’s Congress approved a major reform to the LFCE that lowers the monetary thresholds triggering merger notification requirements. The changes affect the transaction value, target size, and party size tests—making it essential to reassess notification duties early in any deal involving Mexico.

Consult the full content of the Legal Briefing here.

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Redrawing the Rules: Mexico’s 2025 Antitrust Reform and What It Means for Global Business

mariajose.canal — Tue, 08 Jul 2025 16:32:05 +0000

The reform, expected to take effect in July 2025, dissolves COFECE and replaces it with a new authority under the Executive, while redefining institutional structures, increasing penalties, and introducing major changes to merger control and substantive competition rules. This new framework poses unprecedented challenges for international businesses, bringing heightened political uncertainty, stricter enforcement thresholds, and stronger sanctions.

Consult the full content of the Legal Briefing here.

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Cofece’s four new investigations into potential anticompetitive practices

mariajose.canal — Wed, 18 Jun 2025 18:46:47 +0000

Our team analyzes the scope of these investigations and their potential implications for the parties involved. Despite the ongoing institutional transition, the Commission continues to take firm action in key sectors of the Mexican economy.

Consult the full content of the Legal Briefing here.

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