Dr. Jur. Théophile M. Margellos is President of the Boards of Appeal of the European Union Intellectual Property Office. 

He served as Chairperson of the First (Trade Marks) and Third (Designs) Boards of Appeal and is coordinator of the EUIPO Mediation team. He studied law at the Universities of Athens (GR), Strasbourg (FR) and Freiburg i. Br. (DE). He has successively worked as attorney at law specialised in IP and as referendaire in the EU Court of Justice (Luxembourg) and has been member of the legal service of the European Commission and European Patent Attorney. He has also been law professor at the Jules Verne University in Amiens, France. 

Sven Stürmann, LL.M., is a Lawyer and Mediator by the Universities of Göttingen, Berlin, (Germany) and Alicante (Spain). 

In 2004, he completed a Master of Intellectual Property Law in Alicante and is an internationally accredited Mediator (CEDR).

Sven started working at the European Union Intellectual Property Office, EUIPO, in January 2004, having previously practiced as Attorney-at-law (Rechtsanwalt) and mediator in Berlin (Germany). Over the past fourteen years at EUIPO he has worked as a Lawyer Linguist, Opposition and Cancellation Examiner, Legal Assistant of the 1st Board of Appeal, Legal Advisor and as Mediator. Between 2014 and 2017, he was Team Leader of the Knowledge and Legal Support Team at the Boards of Appeal and Leader of the Knowledge Circle Appeal Processes. Since August 2017, Sven is Chairperson of the 2nd Board of Appeal at EUIPO. Sven is also Member of the Board of Appeal of the Community Plant Variety Office (CPVO) in Angers, France.

He is one of the pioneering mediators at EUIPO, having contributed decisively towards the establishment of EUIPO's Mediation Service in 2011.

Sven is a frequent speaker for Mediation and European Union trade mark issues, both at EUIPO and international conferences and has published a broad range of articles concerning Mediation and European Union trade marks in German, English and Spanish.

Agnes Szanyi Felkl - Obtained M.SC. in architecture and building construction at the technical University of Budapest, in 1984. 

Started working in the building industry, until 1987, when I joined the Hungarian Patent Office, now Intellectual Property Office of Hungary. I started there in the Department of Patent Information which later has broadened its profile and in the early nineties was renamed as the Industrial Property Information Department.

In 1996 I have moved to the newly formed Trade Marks and Designs Department of the HPO, where I worked with International Trade Mark applications, participated in various working groups of WIPO and became the contact person to EUIPO (then: OHIM).

In 1998 I have also obtained my post garduate degree in intellectual property law, which constitutes the Hungarian legal degree necessary for representation in IP matters before the Hungarian Courts.

When Hungary was about to join the European Union, EUIPO was recruiting staff from the 10 new Member States well in advance, to have them trained and ready to work from the moment of accession. I applied for a job, and started as a trade mark examiner, in the core business, in September 2003. In 2006 I was appointed legal advisor of one of the services of the Trade marks and Cancellation Department. The next year I was already appointed to be a Member of the Boards of Appeal by the Administrative Board. After being re-elected, I'm serving my second term, working in both the Fifth Board (Trade Marks) and the Third Board (Designs).

My main working languages are English, Hungarian (my mother tongue), and German. I also speak Russian and Finnish, and learned Spanish and French to acertain extent.

Gordon Humphreys is currently Chairperson of the Fifth Board of Appeal at EUIPO, having joined the Boards as a Member in 2005. 

He was Head of the Register Service from 2002-2005 and joined EUIPO's Legal Department in 1997. He is also an accredited mediator with the Chartered Institute of Arbitrators and is a member of the EUIPO Mediation Service. Prior to working at EUIPO, he was in private practice in Luxembourg and Brussels and qualified both as a barrister and a Belgian avocat. Gordon was educated at the universities of Buckingham, Cardiff and Liège. He also frequently speaks and writes on trade mark and design matters.