
Highly regarded for its ‘excellent knowledge’, Andersen Legal - Pistiolis - Triantafyllos & Associates Law Firm consistently advises major financial institutions and international investors on all aspects associated with joint ventures and multi-jurisdictional acquisitions. The firm is particularly active in the energy, banking and insurance industries. Managing partner Theodore Pistiolis specialises in every element of corporate transactions. Fellow co-heads Katerina Simopoulou and Dimitra Gkanatsiou focus on corporate governance and reorganisations. Themistoklis Giannakopoulos is knowledgeable in regulatory compliance, and Evgenia Apostolopoulou is another key contact.
Testimonials
Collated independently by Legal 500 research team.
‘There are several partners and associates standing out, ensuring excellent results. Dimitra Gkanatsiou is knowledgeable and has a keen eye for detail and always available. She is unquestionably motivated by getting the job done. Theodore Pistiolis is an excellent lawyer with vast experience in many legal areas. His approach is business-oriented. Anastasios Triantafyllos has vast experience and litigation skills – absolutely the kind of lawyer you would always want on your side of the table. Together with Theodore, they make a formidable team.’
‘Andersen Legal has established itself as one of the most trusted partners of our group throughout the years. A leader in Employment, TMT, and corporate law in Greece. Experienced, always with a solution at hand, looking at the big picture and clients' objectives.'
‘Theodore Pistiolis is dedicated to getting the job done, with a deep understanding of client’s needs. He is a solution-focused lawyer with excellent communication skills. He always brings something unique to the table; created a firm that is versatile and capable of handling a wide range of legal challenges. Dimitra Gkanatsiou has an ability to anticipate challenges and deliver valuable advice.'
‘The individual that cooperates with us is Katerina Simopoulou, who holds significant knowledge. Also she is positive and keen to provide the best solution by also taking into account the commercial part of business.’
‘Responsiveness and excellent knowledge of the niche market, in which they operate (Corporate, M&A).’
‘Theodoris Pistiolis is a top lawyer. He is hard working with a sharp mind that can deliver challenging tasks under pressure. He has deep knowledge and experience and his advice is always precise and helpful.'
- 'Dimitra Gkanatsiou is very professional with deep knowledge on corporate/commercial issues and always helpful and available.’
‘Theodore Pistiolis demonstrates top-notch law expertise, excellent legal skills, a good business understanding, and a business-oriented approach. A rising, dynamic, and enthusiastic team supports Theodore. Dimitra Gkanatsiou is a top-quality advisor in corporate matters. Dimitra always works with unique professionalism, offering personal attention to our case simultaneously. Evgenia is a talented lawyer with great potential.’
Key clients
- Allianz Trade
- NVISO
- CHEP Hellas
- Intrakat
- Netcompany-Intrasoft
- Gefsinus
- Alpiq Energy
- Segafreddo
- Heron Group
- Eurobank Asset Management
- Praktiker
- e-SHARE
- P-NET
- Telemed Greece SA
Work highlights
- Advised Lax Roman Lion, a Cyprus-based company and owner of two SPVs, on the spin-off procedure that led to eight new SPVs.
- Advised Blue Stream on the sale of its shares to a listed company in the ASE.
- Advised Lamda Energy Investments on selling its 20% share to R ENERGY 1.
Lawyers

Practice head
The lawyer(s) leading their teams.
Theodore Pistiolis, Dimitra Gkanatsiou, Katerina Simopoulou