Mosimann-Horn Advogados

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We are the product of a confluence of generations, combining the founding partners' experience with the dynamism of new talent.

In a trajectory of over fifty years, we have developed a complete, specialized firm that is open to many ways of thinking.
We invest in, value and provide growth opportunities for our staff, forming a cohesive, diverse and up-to-date team.
The result is a unique vision that allows us to achieve more intelligent ways of practicing law, develop secure and innovative solutions and offer our clients a multidisciplinary and strategic perspective.
With these attributes, we are committed to constantly being one step ahead, taking on challenges with strategic intelligence and a strong desire to do things differently.



Our knowledge about transformations in the sectors and fields in which we work is constantly evolving.  We are always dynamic and tirelessly up-to-date, this is expressed in the services we provide.  
For over fifty years, Mosimann-Horn has helped its clients to navigate complex legal issues with skill and professionalism.  
We strive to deeply understand our client's businesses and the shifting nuances and market conditions that influence (or may come to influence) their key sectors.
With knowledge, passion, and commitment, we help our clients achieve their goals


  • Environmental
  • Compliance and ESG
  • Litigation and Arbitration
  • Contracts
  • Criminal
  • Public Law
  • Asset Management, Family and Estate Law
  • Privacy and Data Protection
  • Intellectual Property
  • Credit Recovery
  • Insurance
  • Corporate Law and M&A
  • Labor
  • Tax Law
  • Agribusiness
  • Third Sector
  • Healthcare
  • Real Estate
  • Financial Institutions
  • Industry
  • Infrastructure, Transportation, and Logistics
  • Mining and Energy
  • Technology, Innovation and Digital Business
  • Tourism
  • Retail and Consumer


Oswaldo José Pedreira Horn Founding Partner
Hélio de Melo Mosimann Fouding Partner
Rafael de Assis Horn Founding Partner
Douglas Anderson Dal Monte Partner
Rodrigo de Assis Horn Partner
Fábio Kunz da Silveira Partner
Lio Vicente Bocorny Partner
Ítalo Augusto Mosimann Partner
Luana Regina Debatin Tomasi Partner
Janaína Marques da Silveira Partner

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