Greece > EU and competition Tier 4

Described as ‘competent, available and straight to the point’, VAINANIDIS ECONOMOU & ASSOCIATES LAW FIRM assists domestic and international clients in a range of commercial transactions and their inherent competition law aspects. The firm's offering includes commercial disputes before the civil courts in Greece and in international arbitration proceedings. Based in Athens, the ‘exceptional’ Aida Economou heads the group.

Practice head(s):

Aida Economou


‘Competent, available and straight to the point.’

‘Aida is an exceptional lawyer, extremely competent and able to provide high level legal advice in a business oriented way.’

Work highlights

  • Represented an international pharmaceutical company in civil litigation involving a multimillion damages claim by a Greek wholesaler.
  • Advised an international confectionery company in relation to its distribution system in Greece.
  • Advised on the settlement procedure before the Hellenic Competition Commission in a case involving Greek tug services companies.

The firm: In 2024, the firm celebrated its 37th  anniversary. Through the high-quality work and commitment of its people the firm has gained the trust of international companies and distinguished international law firms.

Areas of practice
EU and competition law: The firm is extensively involved in EU and competition law. Its practice includes investigations brought by the Hellenic Competition Commission regarding horizontal and vertical agreements, as well as abuse of dominance cases. It has assisted firms in dawn raids, cleared  mergers and has been successful in the rejection of complaints brought before the Commission.

The firm advises businesses on a wide range of commercial transactions, distribution and management agreements, as well as on their related competition law aspects. Its thorough knowledge and experience in the pharmaceutical, hospitality, food and industrial products’ sectors contributes to the provision of efficient advice on a variety of issues, including pricing, sales and distribution strategies.

The firm represents clients in antitrust damages litigation  before the civil courts, the administrative courts and the Council of State. It assists clients in the education of their employees through  competition law compliance  seminars. Vainanidis Economou & Associates is currently involved in cases before the  courts relating to  pharmaceuticals and  cooling systems and advises in transactions relating to the hospitality sector,  elevators sector, food sector and public benefit foundations.  

 Privacy law: The firm has a consolidated experience in privacy and data protection law.  It has assisted its clients in understanding and implementing the GDPR  and meeting related compliance requirements. 

Corporate and M&A: The wave of legislative reforms in Greek company law in recent years has created new types of companies, new mechanisms of companies’ transformations and, naturally, new challenges. The firm’s creative approach and its embedded practice of prior consultation with the competent administrative authorities have led to practical and suitable solutions with respect to M&A projects. During the last years the firm’s M&A activity  has significantly increased.

Commercial law and litigation: The added value offered by the firm to its clients, which allows them to move faster in an increasingly complex legal environment, is its swift and efficient reaction to requests for legal advice on a wide range of business issues, daily operational matters, corporate matters, debt collection, relations with the banks with the aim of obtaining or restructuring finance, granting of securities, communication with the authorities, etc.

With respect to dispute resolution, the firm views strategy, innovative thinking and in-depth research as the key factors to successful litigation. Disputes between shareholders, claims for loss of profits, disputes arising from insolvency and bankruptcy proceedings, objections against participation in public tenders, claims for damages relating to defective products and accidents resulting from use of equipment, claims related to distribution and agency agreements and their termination are some of the matters typically handled by the firm before the Greek courts and in international arbitration.

Employment law: The firm assists clients on all kind of matters which may arise from the moment of hiring of their employees until their dismissal, including related litigation. It has advised international companies in the establishment of their employment practices in Greece, in restructuring projects and where necessary, in the termination of their Greek operations .

Department Name Email Telephone
Antitrust and competition Aida Economou +
Antitrust and competition Costas Vainanidis +
Data protection Evita Vainanidis +
Employment Anna Kazantzidou +
Hotels and leisure Aida Economou +
Hotels and leisure Anna Kazantzidou +
Pharmaceuticals Costas Vainanidis +
Pharmaceuticals Aida Economou +
Corporate and M&A Anita Vainanidis +
Corporate and M&A Costas Vainanidis +
Litigation and arbitration Aida Economou +
Litigation and arbitration Marianna Rapti +
Public procurement Costas Vainanidis +
Public procurement Dimitris Katsaounis +
Debt collection Anna Kazantzidou +
Real estate Anita Vainanidis +
Real estate Katerina Tolia +
Distribution and agency Aida Economou +
Restructuring and insolvency Dimitris Katsaounis +
Restructuring and insolvency Costas Vainanidis +
Photo Name Position Profile
Aida Economou  photo Dr Aida Economou Founder, Managing Partner
Number of lawyers : 11
Association of European Lawyers
European Competition Lawyers Forum
Contact : Dr Aida Economou (Managing Partner,

COMPANY/FIRM: from The Legal 500 2018 edition
TESTIMONIAL: “Vainanidis Economou & Associates Law Firm’s excellent practice provides a very high level of service. Practice head Aida Economou is a real support in negotiations.”

COMPANY/FIRM: from The Legal 500 2019 edition
TESTIMONIAL: “The competition practice is led by the very efficient and to-the-point Aida Economou.”

COMPANY/FIRM: Amgen (Europe) GmbH
TESTIMONIAL: “Vainanidis Economou & Associates provide top end competition and litigation advice. Aida Economou is easy-to-go to, always responsive, provides both in depth legal advice and strategic input, and most importantly delivers results. Unaltered quality for the last 10 years that we have been working with her and the firm.”

COMPANY/FIRM: AHI Carrier S.E Europe Air-Conditioning SA
TESTIMONIAL: “The Law firm Vainanidis Economou & Associates has provided our company with world class legal services for a time span of over 20 years and specifically Mrs. Aida Economou with whom we are in direct contact. The firm has vast qualifications and in-depth experience with a clear understanding of our operating environment, providing comprehensive & high quality legal advice and regulatory support efficiently & successfully responding to our company requirements.”


Vainanidis Economou & Associates is a dynamic law firm with offices in Athens providing high level services to national and international clients. Its practice covers multiple areas of law and a variety of business sectors.