The article concerns philosophical justification and philosophical background of copyright protection relating to international treaties and the law of European Union. This paper is divided into three parts. The first one presents the regulation of copyright law on the international level. Moreover, the European Union’s sources of copyright law are demonstrated. The second part concerns philosophical justification of the copyright protection. Various philosophical stands and concepts that can be helpful with better understanding of this branch of law are presented and explained. The conclusions on philosophical justification of copyright protection in regard to the international treaties and the EU law are shown in the final chapter.