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Constitutional law 2025 FC 1586

Lho'Imggin v. Canada

The Federal Court struck a climate-change Charter claim for insufficient pleading, but granted leave to amend because the defects appeared curable.

  • Section 7 charter
  • Justiciability
  • Customary international law
  • Climate change obligations
  • Pleading standards
  • Section-7-charter
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Immigration MC2-03068

MC2-03068

The exclusion of the Associate Appellant under Article 1F(a) is reversed because the Minister failed to establish serious reasons to consider apartheid was a crime against humanity under customary international law in 1990-1994 and failed to prove the Associate Appellant made a voluntary, significant and knowing contribution (recklessness inadequate and contribution not sufficiently significant given rank, duties and branch). However the appeal is dismissed overall because the Appellants failed to prove objective basis/nexus to Convention grounds or a personalized risk or gender-based persecu…

  • Exclusion under article 1f(a)
  • Customary international law
  • Apartheid as crime against humanity
  • Mens rea and modes of liability
  • Convention refugee status
  • New evidence admissibility
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Public international law 2020 SCC 5

Nevsun Resources Ltd. v. Araya

The Supreme Court of Canada held that the act of state doctrine is not part of Canadian common law and allowed customary international law claims to proceed.

  • Customary international law
  • Jus cogens (peremptory norms)
  • Forced labour
  • Slavery
  • Cruel, inhuman or degrading treatment
  • Crimes against humanity
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Public international law 2017 BCCA 402

Araya v. Nevsun Resources Ltd.

The British Columbia Court of Appeal granted EarthRights International leave to intervene in Nevsun’s appeal, finding its public-law perspective could assist on key international law issues.

  • Act of state doctrine
  • Customary international law
  • Corporate liability for international law violations
  • Intervention
  • Alien tort statute (comparative jurisprudence)
  • Act-of-state-doctrine
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Civil 2016 ONCA 437

Xela Enterprises Ltd. v. Castillo

Rule 17.05(2) authorizes service in non‑Hague Convention states either in accordance with Ontario Rules or the law of the destination state; the rule's clear operational choice rebuts the presumption that the Rules must be read to require compliance with foreign service laws; service pursuant to r.17.05(2) that comes to the defendant's attention may be validated and does not offend customary international law or comity in this context; appeal dismissed and costs awarded.

  • Service of process abroad
  • Hague service convention
  • Comity
  • Customary international law
  • Validation of service
  • Forum non conveniens
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Constitutional law C36799

Mack v. Attorney General of Canada

The strike out was correct: the s.15 Charter claim is impermissibly retrospective because the head tax legislation was repealed in 1947 and the predominating act of discrimination is historical; the appellants cannot establish a binding pre-1947 customary international law prohibiting racial discrimination and any such norm would be ousted by contrary domestic statute; and the head tax statutes provide a juristic reason defeating an unjust enrichment claim, so the claim discloses no reasonable cause of action.

  • Section 15 charter
  • Retroactivity
  • Customary international law
  • Jus cogens
  • Unjust enrichment
  • Head tax
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Canada decisions are organised by court, judge, legal area and indexed issue so a practitioner can move from a proposition to a citable authority with the surrounding context intact.