Agri South Africa (Agri SA), representing commercial farmers, challenged the constitutionality of the Mineral and Petroleum Resources Development Act 28 of 2002 (MPRDA), arguing that it expropriated pre‑existing mineral rights without compensation. The challenge was based on the experience of Sebenza (Pty) Ltd, which had purchased and registered coal mineral rights under the Minerals Act 50 of 1991. When the MPRDA came into force on 1 May 2004, Sebenza’s rights became ‘unused old order rights’, valid for one year and convertible into new rights upon application. Due to financial and internal difficulties, Sebenza did not apply for conversion and its rights lapsed. Sebenza and Agri SA claimed that the extinguishing of these rights amounted to expropriation under section 25 of the Constitution. The High Court upheld this claim, but the Supreme Court of Appeal overturned it, holding that no expropriation had occurred. Agri SA then appealed to the Constitutional Court.