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 > Banking, finance and capital markets

Sioufas & Associates Law Firm, a team with ‘very good coordination’, acts for a range of financial institutions, servicers and foreign investment funds. The practice advises on due diligence concerning Greek NPL portfolios, in addition to handling a range of banking matters. Managing partner George Sioufas, who has an active transactional and advisory practice, leads the team alongside Marios Sioufas and Olga Eftychidou.

Greece > Dispute resolution

Sioufas & Associates Law Firm primarily provides ‘direct, immediate and accurate services’ for clients in the banking industry, having represented a significant number of Greek banks in court litigation. The team’s expertise includes intellectual property work, banking and finance, commercial, insolvency, employment and competition law disputes. Marios Sioufas has successfully handled numerous litigation cases, being a mainstay of the firm’s bank-side work, as has Olga Eftychidou. Nikolaos Katiforis has an extensive experience in public law and arbitration, as well as commercial litigation.

Greece > Intellectual property

A firm with ‘excellent collaborative skills’, Sioufas & Associates Law Firm focuses on trade marks, designs and patents, providing both advisory and litigation expertise. Advising on availability issues of IP rights and avoidance of possible conflicts with existing rights is central to the practice. Marios Sioufas is experienced in handling cases of registration and protection of national, European and international trademarks and designs as well as representing clients before the Administrative Courts of Greece and the European Union Intellectual Property Office.