Justice Mary E. Vallee sits on the Ontario Superior Court of Justice, primarily in Newmarket (Central East Region-Simcoe County) with chambers in Barrie. Since at least 2016 through to 2025, she has presided over 43 cases exclusively at this court level. Her docket has included a mix of motions, costs endorsements, trials, and sentencing decisions, with a notable emphasis on civil litigation and family law matters. Recent activity shows a decreasing caseload trend, with no cases in the last year or month as of October 2025.
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