Von Wobeser y Sierra, SC is a first port of call for major multinationals and leading domestic corporations seeking merger clearance and regulatory approval for cross-border acquisitions and M&A transactions. The team’s advisory practice is enhanced by its strong focus on compliance, which sees it conduct antitrust audits to ensure risk mitigation and also design tailored compliance programs for clients. The group is equally as strong on cartel practice investigation matters and the abuse of dominance cases; it is currently handling active COFECE investigations in the digital and financial market segments. Fernando Carreño co-heads the group and is a heavily sought-after practitioner for antitrust investigations. Sergio López serves as co-lead of the team and can draw on lengthy experience at Mexico’s competition authority to tackle the most complex antitrust mandates. Counsel Michel Llorens focuses on complex merger notifications and leniency program applications. Former associate Mónica Cabeza de Vaca moved in house as compliance manager at Visa (Mexico) in May 2025.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- ‘Over the course of our collaboration, we have been consistently impressed by the team's responsiveness and precision in addressing complex antitrust issues. One of their standout aspects is the ability to quickly assess a client’s needs, responding with tailored strategies that reflect a deep understanding of both local and international competition laws.’
- ‘It has been a pleasure working with Mónica Cabeza de Vaca, whose expertise and professionalism have significantly enhanced our collaborative efforts. Mónica stands out for her exceptional ability to clearly explain the nuances of Mexican merger control to foreign lawyers and clients. Her articulate communication and depth of knowledge make complex regulatory landscapes accessible.’
- ‘The Von Wobeser team is outstanding. Michel Llorengs, Sergio Lopez, and Fernando Carreño are excellent lawyers – the best I have seen. They are a very complete and well-integrated team, and it is a pleasure to work with them.’
- ‘They know very well how to support the business. They suggest practical ideas and solutions and are very proactive.’
- ‘The team is very pragmatic and user-friendly. They know how to navigate and streamline the often challenging Mexican antitrust processes.’
- ‘Fernando Carreño and Michel Llorens are our usual contacts, and they are exceptionally hard-working, available, and commercial in their approach, while also demonstrating excellent technical skills. They are fantastic to work with.’
Key clients
- Anheuser Busch InBev / Grupo Modelo
- Blackstone
- Kohlberg Kravis Roberts (KKR & Co, Inc.)
- Nissan Motor Co., Ltd.
- Clayton, Dubilier & Rice
- Grupo Infra
- Grupo TOMZA and Grupo SIMSA
- Mars
- BMW
- Amcor
Work highlights
Advised Mars and Kellanova on obtaining merger clearance in Mexico.
Advised CD&R and Sanofi on obtaining merger clearance in Mexico.
Advised Naspers/Prosus on obtaining merger clearance in Mexico for its acquisition of Despegar.com.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Practice head
Fernando Carreño; Sergio López
Other key lawyers
Michel Llorens; César Martínez