Joined Cases No. 138/2012 and 139/2012. The Supreme Court of Appeal. AVENTIS PHARMA SA and SANOFI AVENTIS SOUTH AFRICA (PTY) LTD and WINTHROP PHARMACEUTICALS (PTY) LTD v. CIPLA LIFE SCIENCES (PTY) LTD and CIPLA MEDPRO (PTY) LTD and MEDPRO PHARMACEUTICA (PTY) LTD v. TREATMENT ACTION CAMPAIGN