Article 34(3) of the Model Law (First Schedule to the Arbitration Act [Chapter 7.15]) creates a peremptory three-month time limit within which an application to set aside an arbitral award must be made. Once this period expires, the right to challenge the award is lost irrevocably. The clear and unambiguous language stating that an application "may not be made" after three months admits of no extension, and the court has no power to grant condonation for late filing, even on good cause shown. This is a statutory time limit akin to prescription periods, not a procedural rule subject to the court's inherent discretion to extend time. Arbitral awards made under the Arbitration Act may only be set aside using the grounds and procedures set out in Article 34 of the Model Law, not through High Court review procedures under the High Court Act and Rules.