Department profile
CMS

Competition/European Law

Europe Guide 2026 : Portugal

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CMS

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About

Provided by CMS

CMS Portugal acts for a roster of national and international clients, in all areas of competition law, advising regularly on day-to-day competition issues. The team has been acknowledged as the go-to law firm, particularly, in highly regulated markets such as Energy, Healthcare & Pharma, Automotive and TMT. They also have extensive experience advising consumer goods companies, on all forms of distribution agreements. Moreover, the team is amongst the market leaders in anti-trust cases and in damage claims proceedings, representing claimants as well as defendants. 

Our activity includes legal advice on:

  • Antitrust - Compliance, Proceedings & Litigation on cartels, abuses of dominant position and vertical restraints
  • Horizontal and Vertical Agreements (including distribution agreements)
  • Merger control (particularly where complex multijurisdictional filings are involved)
  • State aid
  • Private enforcement
  • Compliance & Training
  • Competition Audits and Raid Simulation
  • Unfair Trade Practices

We have in-depth knowledge of how Competition law applies across different markets and with cross-disciplinary teams. We work to provide advice close to our clients’ needs.

For a comprehensive list of the services we provide, both internationally and in Portugal, please visit CMS website.  

Industries (6)

  • Energy
  • Healthcare
  • Pharmaceuticals
  • Automotive
  • TMT
  • Consumer Goods

Chambers Review

Provided by Chambers

Competition/European Law - Portugal

Band 3

What the Team is Known For

CMS frequently acts for clients in investigations into alleged cartels, as well as defending them in complaints of abuse of dominance. It additionally represents them in appeals against fines and in damages actions. The law firm also assists with obtaining competition law approval for proposed mergers, as well as challenging clearance decisions. The team has further experience in state aid mandates.

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Work Highlights

Provided by Chambers

  • CMS assisted CREST with merger control matters before the Portuguese Competition Authority.

Strengths

Provided by Chambers

  • The team at CMS has responsible partners who are extremely available, pragmatic and effective.

    Competition/European Law respondentEurope

  • The team at CMS is clear in communicating guidelines and has in-depth knowledge of the competitive landscape in Portugal.

    Competition/European Law respondentEurope

  • The partners at CMS have deep knowledge of the subject matter and the sector. Furthermore, the team provides personalised, tailor-made advice.

    Competition/European Law respondentEurope

  • CMS is super responsive and anticipates our questions. Therefore, we are very well prepared for our interactions with the regulator.

    Competition/European Law respondentEurope

  • CMS consistently provides timely updates, clear communication and demonstrates a strong commitment to client needs.

    Competition/European Law respondentEurope

Notable Practitioners

Provided by Chambers

  • Luís Miguel Romão
    Luís Miguel Romão

    Luís Miguel Romão

    Luís Miguel Romão frequently acts for clients on investigations into alleged no-poach agreements and cartel involvement, as well as in claims of abuse of dominance. He has further experience in appeals against authority decisions and damages actions. He also advises on merger control filings and state aid mandates.

    • Luís Miguel Romão is a very strong advocate for us. He is kind and incredibly responsive.

      Competition/European Law respondentEurope

    • He has deep knowledge of the subject matter and the ability to adapt to the needs of each situation.

      Competition/European Law respondentEurope

    • His strong points are his knowledge, how easy it is contact him and his capacity to deal with all themes to do with competition.

      Competition/European Law respondentEurope

    • What distinguishes Luís Miguel Romão is his ability to combine deep technical knowledge with practical and company-focused solutions.

      Competition/European Law respondentEurope
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Ranked Individuals at CMS (1)

Portugal

Members

Provided by CMS

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