1. Nullity due to Lack of Jurisdiction (Ultra Vires Proceedings)

A decision is null if the court or tribunal acted without jurisdiction or exceeded statutory authority. Jurisdiction is the foundation of validity.

Core Principle

If jurisdiction is absent, the entire proceeding is a nullity and cannot be cured by consent.

Case Law

• Nik Elin Zurina v Kelantan (2024) – Federal Court held certain state enactments void as they were ultra vires Federal Constitution, reinforcing that actions beyond legal authority are null and void. 
• Public Prosecutor v Khong Teng Khen (1976) – affirmed validity of statutory framework; implies acts are valid only if within constitutional bounds. 
• Loh Kooi Choon v Government of Malaysia (1977) – emphasized limits of legal authority under constitutional structure. 

Micro-Point

Even a procedurally correct hearing becomes void if the tribunal lacked jurisdiction.

2. Nullity due to Violation of Natural Justice (Audi Alteram Partem)

Procedural nullity arises when a party is denied the right to be heard.

Core Principle

“No hearing = no valid decision.”

Case Law

• Lee Kwan Woh v Public Prosecutor (2009) – conviction quashed because the accused was not given proper opportunity to defend himself; this was a substantial miscarriage of justice. 
• Rohana Ariffin v Universiti Sains Malaysia (1989) – disciplinary proceedings must be fair and not arbitrary. 
• Mohamad Adri’ Ammar v Suruhanjaya Pasukan Polis (2023) – courts reaffirmed procedural fairness as essential even in administrative proceedings. 

Micro-Point

Failure to provide notice or hearing renders the decision procedurally void.

3. Nullity due to Mandatory Procedural Non-Compliance

Where statute prescribes mandatory steps, failure to comply results in nullity.

Core Principle

Mandatory procedural rules are condition precedent to validity.

Case Law

• Sim Koi Chuan v Nelson Sim Ping Hun (2023) – failure to comply with procedural requirements under Rules of Court raised jurisdictional defect issues. 
• Professor Dato Dr Mohd Fauzi v UPM (2019) – procedural fairness must still be observed even in disciplinary bodies. 

Micro-Point

If the statute requires a step (e.g., filing, service, notice), non-compliance can void proceedings.

4. Nullity due to Bias or Apparent Bias

Decisions made by biased adjudicators are null because fairness is compromised.

Core Principle

Justice must not only be done but seen to be done.

Case Law

• Lee Kwan Woh v Public Prosecutor (2009) – fairness requirement includes unbiased adjudication. 
• Rohana Ariffin v USM (1989) – disciplinary authority must appear fair. 

Micro-Point

Even procedural compliance cannot cure bias.

5. Nullity due to Procedural Irregularity Causing Prejudice

Not all irregularities cause nullity—only those causing substantial injustice.

Core Principle

Courts distinguish between:

• Curable irregularity
• Fatal irregularity (nullity)

Case Law

• Nunc Pro Tunc principle (Malaysian courts) – procedural defects may be retrospectively validated unless prejudice occurs. 
• Rohana Ariffin v USM (1989) – fairness evaluated holistically, not mechanically. 

Micro-Point

If no prejudice is shown, procedural defect may not lead to nullity.

6. Nullity in Civil Proceedings due to Invalid Originating Process

If initiating documents are defective, proceedings may be void.

Core Principle

Invalid writ or petition = invalid entire proceedings.

Case Law

• Sim Koi Chuan v Nelson Sim Ping Hun (2023) – procedural defects in probate-related proceedings challenged validity of action. 
• Malaysian courts consistently apply Rules of Court 2012 strictly in jurisdictional filings.

Micro-Point

A defective writ or petition may render the entire action a nullity if not rectified.

7. Nullity due to Retrospective Validation Failure (Procedural Cure Doctrine)

Courts may sometimes cure defects, but only if statutory compliance is not mandatory.

Core Principle

Procedural defects may be cured unless they go to jurisdiction.

Case Law

• Nunc Pro Tunc doctrine in Malaysian courts – allows retrospective correction of procedural irregularities in limited cases. 
• Rohana Ariffin principle – fairness is key, not rigid technicality. 

Micro-Point

Not every defect is fatal; only jurisdictional or fairness-defeating defects cause nullity.

CONCLUSION

Procedural nullity in Malaysia operates as a control mechanism ensuring legality, fairness, and jurisdictional discipline. It arises primarily in seven micro-situations:

1. Lack of jurisdiction (ultra vires acts)
2. Breach of natural justice
3. Failure to comply with mandatory procedure
4. Bias or apparent bias
5. Prejudicial procedural irregularity
6. Invalid originating process
7. Failure of curative validation principles

Malaysian courts consistently balance procedural strictness with substantive justice, ensuring that only serious defects that undermine legality result in true nullity.