Borja Sainz de Aja

Partner since 2014 ––– Madrid
Member no. 66240 of the Madrid Bar Association


Borja Sainz de Aja joined Uría Menéndez in 1999 and headed its office in Lima from November 2002 until September 2004. He specialises in Intellectual Property, distribution, unfair competition, advertising, data protection law and litigation relating to these areas of law.

He regularly advises engineering and technology multinationals and other companies in sectors such as electronics, microelectronics, software, food, beverages, tobacco, textiles and education on the negotiation, drafting and structure of contracts and transactions. Borja also represents these clients before regulatory bodies and courts in proceedings on the protection of patents, trademarks, industrial designs, copyright, know-how and other intellectual property rights.

Moreover, Borja advises market leaders in the telecommunications, electronics, financial services and food and drinks sectors in litigation and non-litigation matters regarding unfair competition and advertising issues, including passing-off, gaining unfair advantage from the reputation of others, misleading practices, sales below cost, protection of trade secrets, misappropriation of trademarks and getting ups.

His expertise includes advising on commercial law issues, including corporate matters and collaboration contracts. He specialises in drafting distribution, software and internet related contracts. Borja has been involved in the drafting of the corporate aspects and standard conditions of leading Spanish on-line service providers.

Borja has extensive experience on personal data protection and advises multinational and domestic clients from all sectors on the design, regularisation and processing of their databases and information systems.

In the 2015 edition of Iberian Lawyer he was named one of the top 40 lawyers under the age of 40 in Spain and Portugal.

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  • Law Degree, Universidad de Navarra, 1998, summa cum laude

Professional associations

  • Madrid Bar Association
  • Spanish Group of the International Association for the Protection of Intellectual Property
  • Lex Mundi - contact for Spain
  • Spanish Association for the Defence of Competition (Unfair Competition Section)

Teaching activity

Borja is a lecturer on the Master of Business Law and the Master of Digital Law at the Universidad de Navarra (UNAV).

He is a lecturer on the Master of New Technologies at the Universidad Complutense and on the Master of Intellectual Property at the Universidad Autónoma and Universidad Carlos III in Madrid.

Also, he is a lecturer on the Master of Economic Criminal Law at the Universidad Rey Juan Carlos in Madrid.

Likewise, he has been a lecturer on the Master's degree in intellectual property at the Universidad Pontificia de Comillas in Madrid and a degree in Law (Commercial Law) at Centro Universitario Villanueva.

Recent publications