Copies of artefacts are ubiquitous in our lifeworld and have gained influence on several domains such as economy, culture and science. This development has induced wide-ranging public debates about how to evaluate copying processes regarding their legitimacy, which up to the present day have not reached consensus. This situation calls for an ethics of copying. However, such an ethics has not been elaborated in detail up to the present day. This paper aims at creating foundations of an artefact-related ethics of (...) copying by giving a sketch of an answer to the question of what it means to illegitimately copy an artefact. In order to achieve this, I firstly define “artefact copy” to limit the subject area of such an ethics. Secondly, I answer the question of where to draw the line between legitimate and illegitimate processes of copying. (shrink)