Andersen
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Combining ‘high technical competence’ with a ’practical’ approach, Andersen is a ‘go-to’ adviser for M&A, transactional structuring, regulatory compliance and corporate governance across infrastructure, energy, telecoms and financial services. Practice head Mariana Abreu, recognised for her ’strategic capacity’ and ‘global vision’, is experienced in M&A, compliance and regulatory matters.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- ‘Andersen is the go-to law firm for my company for all matters related to commercial and corporate law. They combine extensive knowledge of Portuguese commercial law with excellent expertise in the energy sector, making them an ideal partner for M&A transactions, PPAs, other contracts, etc. This is complemented by a strong work ethic and dedication to clients.’
- ‘Andersen distinguishes itself through a combination of high technical competence and a practical, client-oriented approach. The firm combines in-depth legal knowledge in commercial, corporate, and M&A law with a true understanding of the business sector, allowing it to provide advice that is not only legally sound but also commercially useful and strategic.'
Key clients
- Regenerate Sustainable Agriculture Fund
- KGAL
Work highlights
Acted for the joint venture formed by ARD Investment & Development and Ibervalles on the acquisition of Hotel Cascais Miragem in Portugal, with a total investment of €205m.


