
Testimonials
Collated independently by Legal 500 research team.
‘They stand out for their professionalism, experience, in-depth knowledge of each case resulting from the study from different points of view, brilliance in the approach, efficiency in the reaction to untimely requirements of the courts, accessibility, and availability.’
‘It is an experienced and cohesive team with a proactive approach to work and focused on helping and advising clients.’
‘Berta Aguinaga is absolutely fabulous and a completely trustworthy criminal lawyer. She is intelligent, hard-working, and proactive with knowledge of the client and their needs. Enrique Muñoz is a great second in command of the team.’
‘Ontier's criminal team has a huge capacity for adaptation and they efficiently size their teams to offer competitive agreements to their clients. The team is super dedicated and knowledgeable about criminal practice.'
‘Both Berta Aguinaga and her collaborator Mercedes Benito maintain an incomparable attitude of cooperation with the client and interest in the resolution of the matters that are presented to them, far exceeding the attitude found in the market. Their knowledge of criminal law in particularly complicated matters is impressive.’
‘What distinguishes Ontier's criminal practice is, without a doubt, the human quality and level of empathy demonstrated at every stage of the process. In high-stress situations, such as those typically involving criminal cases, having a team that not only offers excellent legal advice but also gets involved on a personal level, is invaluable. Both Berta and Enrique have made us feel not just like clients, but like part of a family, providing close support and transmitting security through their deep knowledge in this field. This empathetic approach has made a difficult and stressful situation more bearable.’
Key clients
- Antonio del Valle Ruiz
- Ángel y Álvaro Pérez-Maura García
- José Luis Macho Conde
- Dentoestetic Centro de Salud y Estética Dental, S.L.
Work highlights
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Practice head
Berta Aguinaga Barrilero
Other key lawyers
Enrique Muñoz Blanco, Mercedes Benito Mira