(1) An application for leave to appeal under section 375 is commenced by filing a notice of application for leave to appeal in accordance with the rules of court of the Supreme Court within—
(a) 28 days after the day on which the child is sentenced by the appellate court; or
(b) any extension of that period granted under section 313 of the Criminal Procedure Act 2009 .
(2) The Registrar of Criminal Appeals must provide to the respondent a copy of the notice of application for leave to appeal within 7 days after the day on which the notice of application is filed.