ABSTRACT: The Authors deal with the problem of third parties intervention in arbitration proceedings in their legislation (portuguese and italian), which differ in the fact that the first does not explicitly consider such an institution, while the second, following a doctrinal debate, has a special discipline since 2006 with the introduction of art. 816 quinquies CPC. In their essays, a special attention is given to the admissibility conditions of third parties intervention, especially when they are unrelated to the arbitration agreement, and to the problem of their participation in the constitution of arbitral tribunal.
Revista Brasileira de Arbitragem