MCAP Service Corporation v Klein

Decided: 2026-10-27. Docket: 2603-0229AC. Citation: 2026 ABCA 345 (CanLII). Procedure — Stay pending appeal — Enforcement of order — RJR-MacDonald Inc v Canada (Attorney General) test applied — Discretion to stay enforcement pending appeal considered — Serious question, irreparable harm, and balance of convenience addressed — Collateral attack concerns noted — Stay dismissed | Procedure — Stay pending appeal — Serious question — Whether appeal is arguable and not frivolous or vexatious — Reliance on affidavit of default accepted in earlier redemption order — Arguments characterized as collateral attack on redemption order — Serious question threshold not met on record — Stay dismissed | Procedure — Stay pending appeal — Irreparable harm — Whether applicant will suffer irreparable harm if s