Mariana Soares David

Senior Lawyer

Mariana Soares David joined Morais Leitão in 2006. She is a member of the firm’s litigation and arbitration team.

Mariana performs a significant part of her work drafting and negotiating commercial agreements (with special focus on distribution and commercial agency agreements), in matters related to the transport of hazardous products, product safety,  liability, agribusiness and other consumer related issues, as well as in the resolution of disputes arising therefrom.

She has accumulated experience in the areas of e-commerce, insurance contracts, unfair competition, environmental liability and directors' liability.

She has a significant track record of litigation and arbitration proceedings successfully settled through highly complex multi-party negotiations. Previously, she began her collaboration with the firm in the areas of corporate and M&A and capital markets, having participated in several mergers, acquisitions and other corporate transactions.

Mariana is certified as mediator and mediation master advocate by the Instituto de Certificação e Formação de Mediadores Lusófonos (ICFML) and is part of the exclusive list of mediators certified by the International Mediation Institute. She is also part of the list of mediators of the Ministry of Justice.





Law Degree (Nova Law School, 2006). Update Course in Portuguese Arbitration (Nova Law School, 2012). Course on Commercial Mediation & Mediation Advocacy (Nova Law School, Laboratório RAL and ACL, 2012).


Portuguese, English, French and Spanish.


Portuguese Bar Association (admitted in 2009).


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