José Luís Arnaut > CMS > Lisbon, Portugal > Lawyer Profile

Rua Castilho, 50
1250-071 Lisbon

Work Department



Managing Partner


José Luís Arnaut is the Managing Partner and the head of the Intelectual Property practice at CMS Portugal. He has extensive experience providing advice to a roster of national and international clients in the field of intelectual property law, in which José Luís reached high level of recognition, with a special focus on patents, trademarks, domain names, new technologies and competition law.

José Luís Arnaut is also a member of the board of directors of several national and international entities.


Portuguese, English, French, Spanish

Lawyer Rankings

Portugal > Intellectual property

(Hall of Fame)

José Luís Arnaut – CMS

The IP department at CMS undertakes trade mark and patent filing, infringement and portfolio management work on behalf of multinational clients operating in a variety of sectors. Assisting Portuguese companies with the internationalisation of their brands is also a core strength of the department, which has wide-ranging experience in EU trade marks and related litigation. Leading the group is José Luís Arnaut, who is the first point of contact for several companies in relation to domain names, patents and trade marks. João Leitão Figueiredo is counsel of choice for several international companies; he specialises in industrial property rights pertaining to the life sciences, technology and media sectors.

Portugal > Data privacy and data protection

Data privacy and cybersecurity audits, regulatory compliance and matters involving the processing of personal data are among the typical mandates handled by the privacy and data protection team at CMS. Multinational and start-up companies in the technology, communications, life sciences, retail and banking sectors feature on the team’s diverse client roster. José Luís Arnaut oversees the team, which also advises on data breaches; clients benefit from access to a mobile app (CMS Breach Assistant) which helps them understand the priority steps that should be taken when faced with a breach. João Leitão Figueiredo is praised by clients for being ‘reliable, pragmatic and technically sound on all aspects of data protection work‘.

Portugal > TMT

CMS handles a range of transactional and regulatory matters related to the media, advertising and technology sectors. The team is typically instructed in matters involving the development and launch of new apps, software licensing agreements, M&A deals and advertising campaigns. José Luís Arnaut heads up the technology, media and communications team, which also features João Leitão Figueiredo, who has assisted private and public sector clients in various technology-related matters.