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CSBA is a leading law firm in Portugal which takes the interests of its customers as a priority, designing and planning the most suitable strategy so that Customers achieve the intended purposes. 


CSBA has in its genesis the accumulated experience of decades of progress and success, a very relevant experience in challenging periods and innovative markets. CSBA, led by Isabel Marinho and Mafalda Rodrigues Fonseca, is proud in having today partnerships with the best law firms in the world.


To ensure the more effective legal framework for development strategies, or for the constraints of our customers, is our daily commitment in CSBA.


We will be happy to meet you and study your challenges.



Contribute to the success of our customers, increasing value in their activity allowing a better positioning in the markets in which they operate.

To this end, we develop competent and proactive multidisciplinary teams that guide the profession by the highest standards of professional ethics.



For CSBA to be recognized as a reference law firm that contributes to the ethical affirmation of justice and the success of its customers.


Profissional ethics

  • Exercise activity in accordance with the best practices encouraging customers to adopt them into their development strategies.



  • The pursuit of the interests of CSBA’s customers is based on excellence, advising them on the best practice of law. 



  • To ensure sustained and rapid responses to the challenges of its customers CSBA is attentive to markets where those act.



  • CSBA guides its activity for the accuracy and the development of a spirit of partnership and transparency in the relations with customers, colleagues and with the market.


Participation in publications

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Rua Castilho nº 44, 8º Piso

1250-071 Lisboa - Portugal

Tel: +351 213 846 200

Fax: +351 213 861 735

CSBA in the press:

“O Mar como Opção Estratégica”

“O Mar como Opção Estratégica”

“Energia Nuclear: Sim ou Não?”

“Energia Nuclear: Sim ou Não?”

"Shipping: uma opção estratégica"

"Shipping: uma opção estratégica"

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