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Gianni & Origoni

Decio Nicola Mattei

Decio Nicola Mattei



  • Litigation and Arbitration

WSG Practice Industries



Decio Nicola Mattei focuses on civil, corporate, insolvency, banking and real estate litigation and he assists and advises both Italian and multinational companies. He has developed significant expertise in defending clients before arbitration panels, including those managed by international chambers, and in the drafting of commercial agreements, in particular in the real estate field.

Decio graduated in Law from the University LUISS Guido Carli in Rome in 1997, and he subsequently attended the Academy Of American and International Law (University of Texas, Dallas) in 2006 and the “ICC's Young Arbitrators Forum” (Barcelona, Spain) in 2008.

He is a member of the Italian Bar and he has rights of audience before the Italian Supreme Court. He is also a member of the Alumni of the Academy of American and International Law.

He speaks Italian, English and Spanish.

Bar Admissions

  • BENEVENTO Bar (Italy)


  • University LUISS "Guido Carli" of Rome
  • University of Texas at Dallas, Academy of American and International Law
Areas of Practice

Litigation and Arbitration

WSG's members are independent firms and are not affiliated in the joint practice of professional services. Each member exercises its own individual judgments on all client matters.

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