Buzbee (Pty) Ltd v. The Registrar of Patents and Two Others was an appeal of the Registrar of Patent’s decision to allow a one-day extension of time, ex post facto, within which to file a counterstatement in response to an application for revocation of South African patent 2002/8482. In terms of Patent Regulation 90(1), a patentee must serve and file a counterstatement to an application for revocation within two months of its service and lodging (or on extension of that period), failing which the patent will be deemed revoked.