Catch the other side's AI-hallucinated citations.

Fictitious citations don't belong in court. CaseCheck automatically flags AI-hallucinated citations in seconds.

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How CaseCheck Works.

1

Upload your list of authorities or full legal submissions

Drag and drop your list, schedule or table of authorities in PDF format.

2

CaseCheck extracts every citation

Our parser identifies every case — numbered lists, tables, bullets, Quebec c. style, Re/In re, and more — with 100% accuracy on tested formats.

3

Automatic verification against CanLII database

A search window opens automatically. Check whether the case exists, then mark it found or not found.

4

Download your verification report

Once all citations are verified, export a report documenting which citations were confirmed and which were not found.

No one filed fake cases as real authority until generative AI.

Now they appear in the other side's submissions every week.

Opposing counsel is often the first to notice

In Canadian filings flagged for fictitious citations, the other side is usually the first to raise the issue.

A plausible citation is not a real one

Fictitious citations mirror the format, year, and court code of real ones. The eye can't tell them apart. CaseCheck can.

Check before you commit

There is no point reading a case that doesn't exist. A citation check before substantive review saves the hours you would have spent looking for it.

Built for Canadian case law

CaseCheck cross-references against CanLII. It does not hallucinate.

The research backs it up

Courtready has documented over 140 cases of fictitious citations across 45 Canadian courts and tribunals. The research is public and ongoing.

Private by design

CaseCheck runs entirely in your browser. Nothing about the document, its citations, or the results leaves your machine.

Real Consequences

What Happens When Citations Are Wrong.

Canadian courts have imposed escalating sanctions for fabricated or unverified case citations. These are not hypothetical.

2024 BCSC 285

Supreme Court – BC

Lawyer personally liable for costs

"Citing fake cases in court filings and other materials handed up to the court is an abuse of process and is tantamount to making a false statement to the court."

2025 ONSC 2965

Superior Court – ON

Contempt of court proceedings

"Counsel may not mis-state or misrepresent the law to the court whether by way of AI hallucinations or by any other means."

2025 QCCS 3521

Superior Court – QC

$5,000 fine for referring to AI-hallucinated cases

"Tenter d'induire la partie adverse et le Tribunal en erreur en produisant des extraits fictifs de jurisprudence et autres autorités constitue un manquement grave."

2025 FC 1233

Federal Court of Canada

Entire motion record struck from file

"Removal of the abusive Motion Record from the Court file is necessary to preserve the integrity of the Court's process and the administration of justice."

2025 FC 1060

Federal Court of Canada

Costs ordered personally against counsel

"The potential for generative artificial intelligence to hallucinate is well known and this Court has issued a practice direction in regard to its use."

Live Database

CaseCheck tracks every known instance of fictitious citations in Canadian courts.

Our research team maintains a comprehensive database documenting cases across courts and tribunals where AI-hallucinated case law was identified in legal proceedings.

0+ documented cases

0+ courts & tribunals

Updated weekly

Explore the database

Questions? We have answers.

Get in Touch

Have a question, feedback, or want to learn more? Drop us a message.

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About Courtready

Legal Tech for Everyone

Courtready builds practical legal tools used by tens of thousands of Canadians — lawyers, paralegals, and self-represented litigants — to navigate the justice system with confidence.

From flight delay compensation calculators to Ontario court deadline tools and limitation period analyzers, Courtready's free resources are designed to make the law accessible and actionable.

CaseCheck is the newest addition to the Courtready suite, built to address the growing threat of AI-generated fake case citations in Canadian court filings.

Visit courtready.ca →

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