The principles of civil procedure (the inherent, sectoral principles of civil procedure) are the fundamental legal ideas on which the specific legal regulation of civil proceedings is based. Their summary forms the characteristics of the proceedings, which may be different in various types of civil procedure.
This is also the same way in contentious and non-contentious proceedings. The aim of this paper is to emphasize the essence of selected principles applicable in contentious and non-contentious proceedings, which mainly concern the participation of the court and the parties in the proceedings, i.e. their procedural roles, initiative and activity.