The Competition Appeal Court, being a creature of statute, derives its powers exclusively from the Competition Act 89 of 1998. Section 37(1) expressly limits the Court's jurisdiction to review or hear appeals against decisions of the Competition Tribunal. Under section 31 of the Act, only decisions made by the Chairperson or other person contemplated in section 31(5), or decisions of a majority of panel members, constitute decisions of the Tribunal. Decisions of Assigned Members made in the course of pretrial case management do not constitute decisions of the Tribunal and are therefore not subject to review or appeal by the Competition Appeal Court under section 37. The legislature's express limitation of appeals to final decisions and specified interim/interlocutory decisions indicates no intention to permit unlimited interlocutory reviews of assigned members' procedural decisions.