Department profile
Baño León Abogados (Madrid - HQ)

Public Law

Europe Guide 2026 : Spain


Baño León Abogados (Madrid - HQ)

Rankings

About

Provided by Baño León Abogados (Madrid - HQ)

The firm praises itself of a very strong public law practice, which draws on regulatory know-how and knowledge of the intrincacies of administrative proceeding and administrative decision making. 

The practices advises in a range of sectors including payment services, transportation, sports, urban planning and concession contracts. Our team often advises service providers on contentious mandates linked to the award or performance of concession contracts. It defends successful bidders against appeals filed by competitors, and it assists with litigation filed as a result of the early termination of concessions, review of prices and extension of contracts. The team also acts for industry associations on varied advisory matters, including interactions with public authorities in respect of new regulations. 

Overall, the firm enjoys a very high success rate in obtaining favorauble judgments at the Spanish Supreme Court on public procurement matters. Recent cases at the Supreme Court include the consequences of breaching the duty of secrecy during the bidding process or the limits of competition law in joint ventures formed by competitors in public procurement contracts.

Clients include Aquila Acentor, Elecnor, FCC Aqualia, FCC Medioambiente and ASELIP among others.

Chambers Review

Provided by Chambers

Public Law - Spain

Band 3

Band 3


What the Team is Known For

Baño León Abogados is a dedicated domestic boutique with a strong client list consisting of industry associations and private companies. The law firm advises industrial companies on the impact of new regulations as well as strategic contentious claims. It has experience in significant cases referred up to the ECJ for a determination on the legality of new requirements for ride-sharing companies. It also advises on both the public authority and the private contractor side of disputes over the performance of public contracts.

Work Highlights

Provided by Chambers

  • Baño León Abogados advised Elecnor on its contract for the maintenance and comprehensive conservation of centres of the University of Valencia.

Strengths

Provided by Chambers

  • Baño León Abogados' strategic vision, reputation and writing are all exceptional. For contentious administrative proceedings and public procurement, they are strong.

    Public Law respondentEurope
  • Baño León Abogados stands out for its close and constant attention, wide availability, fast responses to enquiries and high-quality work.

    Public Law respondentEurope
  • Baño León Abogados has extensive knowledge of administrative law and knows how to approach matters to achieve the best result.

    Public Law respondentEurope
  • The team knows how to adapt quickly and gather information to be able to give the best advice.

    Public Law respondentEurope

Notable Practitioners

Provided by Chambers

  • Eminent PractitionersJosé María Baño León
    Eminent PractitionersJosé María Baño León

    José María Baño León

    José María Baño León has in-depth technical understanding of a broad array of public law issues, including advising on legal reforms and representing clients in proceedings before the Spanish Supreme Court. He also has an outstanding reputation for his academic profile.

    • He is a rock star – one of the greatest minds in Spanish public law and an absolute benchmark.

      Public Law respondentEurope
  • Band 5José María Baño Fos
    Band 5José María Baño Fos

    José María Baño Fos

    José María Baño Fos handles a range of administrative disputes, including filing appeals against previous rulings.
    • I really appreciate José María Baño Fos; he is a very hard worker and perfectly understands when something is urgent. He has the criteria to give added value beyond what the client asks for.

      Public Law respondentEurope
    • I would totally recommend José María Baño Fos as a professional and as a person.

      Public Law respondentEurope
    • I think José María Baño Fos is an excellent lawyer, with extensive knowledge of the operations of companies that work with public administrations.

      Public Law respondentEurope

Ranked Individuals at Baño León Abogados (Madrid - HQ) (2)

Spain

Members

Provided by Baño León Abogados (Madrid - HQ)

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