Stelios Koumartzakis is Attorney at Law since 1998. He graduated the Athens University Law Department and holds a postgraduate degree in International Economic Law at Warwick University, specializing in Business Competition Law. He is fluent in English.

In the framework of 20 years of law he has been dealing with commercial and civil law cases and has a continuous presence in the courts of the whole country. Specialized areas of law are the law of civil and commercial contracts, motor vehicle damages and breach of contracts, property law and inheritance law and technology and Internet law. Also a major area of ​​concern is crowdfunding contracts dealing with funding issues through financial offers for ideas communicated over the Internet, intellectual property rights from this notification and contracts required on the Internet for the protection and protection of users and transactions.

He holds office in Kaisariani, Attica, at Formionos 39 Street.