KLC, one of the largest legal firms in Greece, was founded in 2000 when three successful legal practices -founded and headed by Professor G.D. Kallimopoulos, Kostas Loukopoulos and Professor Aristides Chiotellis respectively- decided to pool their experience and prestige. Thus, a new type of legal practice with no precedent in Greece was created, aiming to the provision of effective, integrated, high-quality legal services.

With a view to facilitating further development and to establishing a presence in Europe, KLC proceeded with a further merger in 2002. By joining forces with Th. Lamnides & Associates, the practice greatly increased its activities in SE Europe and the former Soviet Union.

KLC's activities in Europe and its active participation in projects and intra-state agreements in the fields of energy, transportation, trade, investments and bank take-overs/mergers led to the opening of the firm's Brussels (2004), Bucharest (2004) and Sofia (2005) offices.

In June 2006, KLC merged with Professor Yiannis Z. Drosos & Associates with a view to responding even more fully to its clients' needs, especially in the field of public law.