Bernardo Diniz de Ayala

Partner since 2008 ––– Lisbon
Member no. 12161L of the Portuguese Bar Association
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  • French



Bernardo Ayala is the current managing partner of Uría Menéndez-Proença de Carvalho.

He has over 30 years’ experience advising on public law, infrastructure projects (including project finance) and dispute resolution (including arbitration, public law litigation and multijurisdictional litigation), and is recognised as one of Portugal’s leading practitioners in these areas.

Bernardo advises a broad spectrum of clients on public procurement (particularly project financing structures); domestic and multijurisdictional litigation and arbitration concerning public and administrative law issues; the civil liability of public authorities; M&A in regulated sectors; privatisations; regulatory matters; and financial products contracted by public entities.

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  • Law Degree, Universidade de Lisboa, 1993

Professional associations

  • Portuguese Bar Association
  • International Bar Association
  • European Group of Public Law
  • Public Contracts in Legal Globalization network

Teaching activity

He lectured on several public law subjects at the Faculty of Law of the Universidade de Lisboa between 1992 and 1998 (constitutional law, administrative law, fundamental rights and urban planning law), and at the Faculty of Law of the Universidade Católica Portuguesa between 2003 and 2015 (public procurement, public-private partnerships, the state-owned corporate sector and fundamental rights).

Recent publications

  • Bernardo Diniz de Ayala. In Estudos em Homenagem à Professora Doutora Maria da Glória Garcia. Volume I. Lisboa: Universidade Católica Portuguesa Editora, 2023

  • Eduardo Ayala González, Ingrid Pi i Amorós, Bernardo Diniz de Ayala. Cuadernos de Derecho Farmacéutico, n.º 73, 2020

  • Decree-Law 19-a/2020: a potential basis for investment claims against Portugal

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    Fernando Aguilar de Carvalho, Bernardo Diniz de Ayala, Nair Cordas. Investment Arbitration Outlook Uría Menéndez, n.º 6, 2020

  • Bernardo Diniz de Ayala. In Escritos de Direito público. Volume III. Contencioso administrativo e arbitragem. José Duarte Coimbra (Organizador), Tiago Fidalgo de Freitas (Organizador), Francisco Paes Marques (Organizador). Coimbra: Almedina, 2019

  • Bernardo Diniz de Ayala. In Estudos em Homenagem a Rui Pena. José de Matos Correia (Organizador), Rui Chancerelle de Machete (Organizador), Pedro Melo (Organizador), Agostinho Pereira de Miranda (Organizador), Nuno Pena (Organizador). Coimbra: Almedina, 2019