Parimoo v. Amin — Ontario Court of Appeal upheld vexatious-litigant order

Case
Sabina Parimoo, Sabina Parimoo Medicine Professional Corporation c/o/b as Cherrycrest Medical Centre and Tariq Kantroo v. Abu Ubaida Amin, Ayesha Amin, 1245532-3 Canada Inc. provincially registered as 3273859 Ontario Inc. c/o/b as King Vape’s Incorporated, and 786 Ummah Investments Corp. c/o/b as Stop N Go Convenience
Court
Court of Appeal for Ontario (Canada)
Date Decided
August 10, 2026
Citation
2026 ONCA 574
Topics
Vexatious litigants, Civil procedure, Access to justice, Fresh evidence

Background

Abu Ubaida Amin and the respondents owned neighbouring units in a commercial complex. Their dispute began after Dr. Sabina Parimoo declined to accept Amin’s wife as a patient and subsequently generated numerous legal proceedings and regulatory complaints. In a defamation action against Amin, the respondents moved under s. 140 of Ontario’s Courts of Justice Act to have him declared a vexatious litigant and to restrict him and his corporations from commencing or continuing proceedings without leave.

The motion judge declared Amin a vexatious litigant. Her findings included that he admitted commencing 21 other court proceedings, none of which had reached a merits hearing; filed unsuccessful human-rights and regulatory complaints against parties, lawyers, witnesses, and others; and sent hundreds of emails to counsel and court staff containing foul, derogatory, and dehumanizing language despite judicial directions to stop inappropriate communications. Amin appealed on statutory, evidentiary, procedural-fairness, litigation-conduct, and Charter grounds, and sought to introduce fresh evidence.

The Court’s Holding

The Court of Appeal dismissed the appeal, holding that the motion judge applied the correct legal test under s. 140 and had ample evidence for her findings. A vexatious-litigant order is discretionary and fact-specific, and Amin identified no material legal error, palpable and overriding factual error, or failure to exercise discretion judicially. The court also rejected his procedural-fairness argument because he had requested that the motion be decided in writing.

The court held that Amin’s conduct was not merely defensive litigation activity. His extensive record of unsuccessful proceedings, complaints, threatening litigation communications, and abusive correspondence supported the conclusion that his disproportionate use of the justice system impeded access to justice for legitimate litigants. The order did not violate ss. 2(b), 7, or 15 of the Charter or deny access to justice; it allowed the court to screen litigation and prevent prejudice from disorderly conduct.

The court also dismissed Amin’s fresh-evidence motion. The proposed settlement documents and a 2023 transcript could not reasonably have affected the result because they did not undermine the motion judge’s broader findings concerning his litigation history and conduct.

Key Takeaways

  • Appellate courts defer to vexatious-litigant orders unless the judge made a material legal error, a palpable and overriding factual error, or failed to exercise discretion judicially.
  • A persistent pattern of unsuccessful proceedings, collateral complaints, abusive communications, and threatened claims can justify an order under s. 140 of the Courts of Justice Act.
  • A vexatious-litigant order does not itself eliminate access to the courts; it permits judicial screening to protect other parties and conserve finite court resources.

Why It Matters

The decision confirms that Ontario courts may consider a litigant’s overall pattern of proceedings, regulatory complaints, and communications when determining whether litigation has become vexatious. Conduct characterized as defensive will not avoid a s. 140 order when the record shows persistent, disproportionate, and abusive use of legal processes.

It also underscores the difficulty of overturning such a fact-driven discretionary order or supplementing the record on appeal with evidence that would not have changed the outcome.

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