The binding legal principles are: (1) A valid opposition under Rule 59(7) of the High Court Rules, 2021 requires both a notice of opposition and opposing affidavit filed together - filing only an opposing affidavit renders the opposition a nullity; (2) The IECMS electronic filing system does not generate or substitute for a properly filed notice of opposition; (3) Failure to comply with the peremptory requirements of Rule 59(8) to serve opposition within seven days and file a certificate of service within 48 hours results in automatic bar under Rule 59(9); (4) Once barred under Rule 59(9), a party has no right of audience except to apply for removal of the bar, and cannot file further pleadings unless the bar is removed; (5) An application for removal of bar requires: (a) reasonable explanation for delay/default; (b) demonstration that application is bona fide; (c) no reckless or intentional disregard of rules; (d) prospects of success on the merits; and (e) no uncompensable prejudice to the other party; (6) After an answering affidavit has been filed, no further affidavits may be filed without leave of court under Rule 59(12); (7) Where the President has appointed a substantive chief under section 3 of the Traditional Leaders Act and section 283 of the Constitution, a challenge only to the nomination process without citing the President or seeking to set aside the appointment is moot, as nomination is part of the appointment process, not a standalone event; (8) A matter is moot when events outside the record have terminated the live controversy between parties; (9) Even where a matter is moot, the court retains discretion to hear it if in the interests of justice, considering factors including practical effect, importance of issues, complexity, and fullness of argument.