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José Luís Arnaut

Work +351210958100

Work Department

Intellectual Property; Lifesciences; TMT


Managing Partner Head of the Intellectual Property and TMT Practice Areas. He is a member of the board of several national and international entities. Founding Partner of CMS Rui Pena & Arnaut José Luís has a vast experience on legal strategic advice to public and private companies. His main areas of practice include restructuring, privatisations, mergers and acquisitions and private equity. His career has started has a lawyer within the practice area of intellectual property law with special focus on patent, trademarks, domain names, new technologies and competition law, areas where José Luís reached high level of recognition. He is a member of the board of several national and international entities.


José Luís Arnaut is, since 1992, European Patents Attorney at the European Patent Office (Munich). He is, since 1996, European Trademarks Attorney at the Office for Harmonisation of the Internal Market of the European Union (Alicante) and Official Agent of Intellectual Property at I.N.P.I – Instituto Nacional da Propriedade Industrial. He has integrated in 1996 the Commission for the Follow-up and Revision of the Code of Intellectual Property and between 1998 and 1999 he has been a Member of the Commission for the Revision of the Code of Intellectual Property. José Luís was member of the Portuguese Parliament for 12 years. He was Deputy Prime Minister (José Manuel Durão Barroso) between 2002 and 2004 and Minister for Cities, Local Administration, Housing and Regional Development (2004 – 2005). He has held office as Chairman of the Foreign Affairs Commission of the Parliament of the Portuguese Republic (2005 – 2008) and was Chairman of the Parliamentary Commission for National Defence of the Parliament of the Portuguese Republic.


English, French, Spanish, Portuguese


Member of ABA – American Bar Association since 1996. He is a member of several international associations related with his area of practice, in which he has already held leading posts. Some of the associations to which he belongs are: INTA (International Trademark Association), AIPPI (Association Internationale pour la Protection de la Propriété Industrielle), FICPI (Fédération Internationale de Conseils en Propriété Industrielle), ECTA (European Communities Trade Mark Association) and PTMG (Pharmaceutical Trade Marks Group).


José Luís Arnaut is graduated in Law from Universidade Lusíada de Lisboa and has obtained the Diplôme d’Études Supérieures Spécialisées en “Accords et Propriété Industrielle” from CEIPI – Centre d’Études Internationales de la Propriété Industrielle, Université Robert Schuman in Strasbourg.


Intellectual property

Within: Leading individuals

José Luís Arnaut - CMS

Within: Intellectual property

Especially active in trade mark enforcement, CMS acts for a solid roster of clients that includes The Navigator Company, Altice, EDP, Galp, Amorim, Super Bock, and LVMH. IP stalwart and public figure José Luís Arnaut leads the team.

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Legal Developments by:

  • Access to justice: protective costs orders in planning challenges

    Third parties and competing developers have no rights of appeal to the Secretary of State against planning decisions. Disappointed applicants can appeal to the Secretary of State and can have the merits of the application reconsidered. The only remedy available to a disappointed third party is a challenge by way of judicial review in the High Court on a point of law. The sense of frustration and disempowerment this creates has not been helped by the increasing complexity of the planning process and the use of consultation to legitimise decisions that many perceive may already have been taken.
    - CMS Group

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