On 10 March 2016 the project team - creator of IUS ROMANUM journal and the editorial staff of the journal, with the support of the Department of Theory and History of the State and Law and the Department of Civil Law at the Law Faculty of the Sofia University "St. Kliment Ohridski" and CIELA Publishing House, organized a scientific colloquium with international participation on "Roman and contemporary commercial law". The colloquium was in the memory of Assoc. prof. Rumen Cholov, Phd who was teaching Roman law at Sofia University for many years. In 2014, 65 years have passed since his birth, and in 2005 he left us forever, leaving an unfinished idea of teaching and developing of Roman law related to contemporary interests and requirements. At the end of the 1990s Prof. Cholov first placed in the academic circles and in the public space the theme of the continuity of the Roman Institute in modern commercial and banking law - years before in Bulgaria to create the new legal framework of these relations . His lectures on the programs of the Bulgarian National Radio attracted great interest in this issue. At the conference were presented the main concepts on the question of the existence of Roman commercial law and its relation to the Banking Law of Ancient Rome, its influence on various contemporary commercial law institutes, the procedural protection of traders, etc.