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Rule Details

CNOOC PETROLEUM NORTH AMERICA ULC v 801 SEVENTH INC

Citation 2026 ABKB 361
Court Court of King's Bench of Alberta
Year 2026
Justice NIXON ACJ

Rules Discussed

  • Rule 3.65 Permission of Court to amendment before or after close of pleadings

Case Summary

This decision arose from an Application by the Plaintiffs and Defendants by counterclaim, CNOOC Petroleum North America ULC and CNOOC Limited (collectively, the “CNOOC Parties”), for permission to amend their Statements of Defence to Counterclaim pursuant to Rule 3.65, following the liability phase of a bifurcated commercial lease dispute. The Defendant, 801 Seventh Inc. (the “Landlord”), opposed some of the proposed amendments.

Associate Chief Justice Nixon reviewed the governing principles under Rule 3.65 and confirmed that the threshold for amending pleadings is low. The Court reaffirmed the general rule that amendments should ordinarily be allowed unless one of the recognized exceptions applies, including serious non-compensable prejudice, bad faith, limitation concerns, or where the proposed amendment is hopeless. The Court explained that a proposed amendment is hopeless if it would be subject to being struck under principles analogous to Rule 3.68, including where it discloses no reasonable claim or defence, is frivolous or irrelevant, constitutes an abuse of process, or is otherwise plainly incapable of succeeding. Nixon A.C.J. further emphasized that only modest evidence is required to support proposed amendments, particularly where the amendments merely provide further particulars to existing pleadings.

In applying these principles, the Court repeatedly emphasized that relevance remains the foundation of pleadings and that amendments must still meet a minimal threshold of factual support. However, the Court rejected the Landlord’s position that prior interlocutory decisions concerning production or abuse of process conclusively barred the proposed amendments. The Court held that many of the amendments either responded to allegations already advanced by the Landlord, further particularized existing pleadings, or were supported by “some evidence” contained in agreements and documentary records already before the Court. Associate Chief Justice Nixon also confirmed that permitting amendments under Rule 3.65 does not determine the ultimate merits, relevance, or admissibility of the allegations at later stages of the litigation.

Applying the low threshold governing amendments, the Court granted permission under Rule 3.65 for all disputed amendments to the Statements of Defence to Counterclaim.

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