Letters Patent jurisdiction turns on cause of action, defendant presence, and balance of convenience in forum selection.

Clause 12 of the Letters Patent was examined on the basis of where the cause of action arose and whether leave was needed to sue in the High Court. The text explains that leave is required when the cause of action arises partly within jurisdiction, while a suit may be filed without leave if it arises wholly within jurisdiction. It also notes that the defendant's presence within jurisdiction and the location of relevant facts or property may affect the jurisdictional enquiry. The balance of convenience, drawn from the forum conveniens doctrine, is identified as a relevant factor in deciding whether leave should be granted and which forum is appropriate.

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Issues: (i) whether leave under Clause 12 of the Letters Patent could be refused merely because the defendant disputed that any part of the cause of action arose within jurisdiction; (ii) whether the question of leave under Clause 12 required consideration of the balance of convenience on the facts before deciding jurisdictional leave.

Issue (i): whether leave under Clause 12 of the Letters Patent could be refused merely because the defendant disputed that any part of the cause of action arose within jurisdiction.

Analysis: Clause 12 permits institution of a suit on the Original Side where the cause of action arises wholly within jurisdiction, and with leave where it arises in part within jurisdiction. The question is to be decided on the plaintiff's pleaded facts and the relevant bundle of facts, not by accepting the defendant's bare denial that no part of the cause of action arose within the Court's jurisdiction.

Conclusion: leave could not be refused solely on the defendant's denial of jurisdictional facts.

Issue (ii): whether the question of leave under Clause 12 required consideration of the balance of convenience on the facts before deciding jurisdictional leave.

Analysis: In a case where part of the cause of action arises within one forum and part within another, the court may consider convenience, but that exercise must be undertaken on the actual facts and not on assumptions. The relevant enquiry is whether the plaintiff or the defendant would suffer greater hardship if leave is granted or refused, and such adjudication must be made after proper consideration of all material facts.

Conclusion: the balance of convenience was a relevant factor and had to be determined on facts before leave could be granted or refused.

Final Conclusion: the refusal of leave was set aside and the matter was remitted for fresh consideration of the leave application in accordance with law.

Ratio Decidendi: an application for leave under Clause 12 of the Letters Patent must be decided on the pleaded and relevant facts, and the court may consider balance of convenience only after a proper factual assessment, not on assumptions or a defendant's mere denial of jurisdiction.

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