
TMT
With Theodore Konstantakopoulos and Athina Skolarikou at the helm, the 'exceptional' practice at Zepos & Yannopoulos deploys experienced experts in data protection, cybersecurity, and regulatory compliance proceedings. The outfit is well versed in acting for telecoms companies, start-ups, and media service providers, routinely overseeing AI governance programs and soft IP issues. Konstantakopoulos primarily specialises in e-commerce law and content regulation matters, Skolarikou is highly knowledgeable in the IT and hotel sectors, whilst Antonis Giannakodimos predominantly concentrates on unfair terms and consumer contract affairs. Yolanda Antoniou-Rapti stands out for her GDPR insight and Iliana Papantoni is also highlighted as a key team member.
Testimonials
Collated independently by Legal 500 research team.
‘Exceptional team with deep expertise spanning from partners to associates. Theodore Konstantakopoulos is one of the leading figures in the field of TMT and personal data in Greece, highly knowledgeable and efficient. He is a highly pragmatic lawyer who understands his field and prioritizes client needs. He possesses extensive expertise in data protection law, demonstrating considerable experience and sound judgment. Yolanda Antoniou–Rapti actively assumes responsibility for client relationships and consistently delivers high-quality service.’
‘My primary contact, Yolanda Antoniou-Rapti, is a highly skilled and well-educated professional. She consistently provides her expert legal opinions with a strategic, thoughtful approach, offering clear and insightful guidance demonstrating both depth of knowledge and practical application.’
‘I have known and worked with Theodoris (Theodore) Konstantakopoulos for almost three years. Theodoris is a seasoned legal professional and trusted business advisor. Theodoris inspires trust, and then he delivers. He gets the business imperative and then makes the legal process follow it. Over the past three years working together, I have witnessed Theodoris’ strength in building great legal teams to drive results for corporate commercial and TMT & Data practice fields. He is extremely dedicated to his clients and has a passion for helping businesses. I attest to Theodoris’ ethical, high integrity and exacting standards both as a lawyer and as a business partner.’
‘Mr. Theodoros Konstantakopoulos stands out in the TMT area. Strong skills and expertise. Quick and effective.’
‘Theodore Konstantakopoulos possesses exceptional communication skills, adeptly simplifying complex ideas, and prioritizes meeting client needs promptly, comfortably, and with confidence. He is accessible and responsive, and he is also willing to allocate matters appropriately, utilizing skilled associates to assist clients in managing costs and ensuring work is conducted at the appropriate level.’
‘Theodoris Konstantakopoulos is a high-end professional, with excellent knowledge of the matters at hand.’
‘The Zepos & Yannopoulos TMT team provides an excellent level of service and combines a deep knowledge of regulatory and legislative developments with technical expertise and business acumen. They are available and eager to respond to all matters, including under tight deadlines.’
‘Theodore Konstantakopoulos provides valuable legal advice which is both knowledgeable and business oriented. He is available to discuss and provide pragmatic advice even on complex matters.'
Key clients
- Health Data Specialists (HeaDS) (Veeda Group)
- Huawei
- Colgate-Palmolive
- Spotify
- Hewlett Packard Enterprise
- Tui Musement
- Mediacube
- Greek Research and Technology Network (GRNET S.A.)
- Infobip
- DEUTSCHE TELEKOM
- Mirum
- Cerved
- CISCO
Work highlights
- Provided GDPR compliance support and Group DPO service for Health Data Specialists (HeaDS), coordinating work and deliverables in 8 jurisdictions in Europe, the US and Australia.
- Advised Huawei on legal developments in the area of cybersecurity and telecoms, with a particular focus on 5G.
- Advised several multinationals, including Amazon, Deutsche Telekom and L’Oreal, with operational presence in Greece, with regard to the EU Whistleblowing Directive.
Lawyers

Practice head
The lawyer(s) leading their teams.
Theodore Konstantakopoulos, Athina Skolarikou