Summaries Sunday: Supreme One-Liners

As a supplement to our Sunday Summary each month, Supreme Advocacy LLP in Ottawa presents Supreme One-Liners, a super-short descriptive guide to the most recent decisions at the Supreme Court of Canada. Supreme Advocacy LLP offers its more comprehensive weekly electronic newsletter, Supreme Advocacy Letter, summarizing all Appeals, Oral Judgments and Leaves to Appeal granted.

Appeals

Real Property: Riparian Rights
Zardev Inc. v. Dydzak, 2026 SCC 27 (41291)

Clarifications re riparian rights, submerged lots, accessories.

Leave to Appeal Granted

Administrative Law/Police: Mandamus
Royal Canadian Mounted Police External Review Committee, et al. v. Benison, et al., 2026 FCA 53 (42332)

Mandamus in administrative law & police context.

Civil Litigation/Arbitration: Standard of Review
Buffalo Point First Nation, et al. v. Buffalo Point Cottage Owners Association Inc., 2025 MBCA 72 (42053)

Standard of review re commercial arbitration.