Mr Marios Sioufas > Sioufas & Associates Law Firm > Athens, Greece > Lawyer Profile

Sioufas & Associates Law Firm
182 33 ATHENS


Deputy Managing Partner


Mr. Marios Sioufas is deputy managing partner of Sioufas and Associates Law Firm, since 2005 and he is responsible of the legal departments: Intellectual Property, Commercial, Corporate M&A and  Dispute Resolution

He has an academic expertise on Intellectual Property Law, holding a Masters in Law  (LL.M) in Intellectual Property from the Queen Mary and Westfield College-University of London and more than 15 years of professional expertise handling cases of registration and protection of national, European and International trademarks and designs for a vast corporate clientele, within Greece and abroad and representing their interests before the Administrative Courts of Greece  and the European Union Intellectual Property Office.

Mr. Marios Sioufas has also experience in registration of Greek patents and collaborates with innovative teams for the drafting of partnership and R&D agreements for the development of inventions.

Mr. Marios Sioufas has successfully handled numerous litigation cases, representing mainly Greek Banks and financial institutions in disputes before the Greek Courts, 


Greek, English, Spanish


Athens Bar Association, AIJA, IAPP,


Master in Intellectual Property Law (LLM), Queen Mary University of London, Faculty of Law

Bachelor of Laws (L.L.B.), University of Westminster, Faculty of Law

1. Thesis «The nature and function of collective management of copyright law».

2. Thesis «Protecting interactivity: How to define and qualify multimedia products from a copyright perspective»  

Lawyer Rankings

Greece > Intellectual property

Trade marks, designs and trade secret matters are at the core of Sioufas & Associates Law Firm’s IP offering, with the firm frequently advising companies from across the education, technology and agriculture sectors. From Athens, Marios Sioufas oversees the practice, specialising in handling cases of registration and protection of European and international trade marks. Nikolaos Katiforis concentrates on data privacy. Dimitrios Frantzidis is also noted.

Greece > Dispute resolution

With extensive experience of handling employment, IP, and banking litigation (particularly defending Greek banks in court proceedings), the Sioufas & Associates Law Firm practice displays an ‘inherent disposition for constructive cooperation’. Based out of Athens, deputy managing partner Marios Sioufas specialises in complex IP and corporate disputes, Olga Eftychidou is an expert in enforcement and insolvency cases, and Nikolaos Katiforis focuses on administrative disputes and arbitration. Theodora Antonopoulou is also highlighted.