Enforcement of Foreign Letters Rogatory - Ontario Superior Court - Witness Opposing or Limiting Scope of Letters Rogatory

What are the strongest grounds to oppose letters rogatory in Ontario?: The strongest grounds to resist enforcement are: (1) specificity failure - where documents are described by sweeping category rather than with reasonable particularity, Ontario courts will refuse the order; (2) privilege - solicitor-client privilege under Canadian law is near-absolute; (3) public policy - where the request engages PHIPA-protected health records or Charter s 8 privacy rights, the court may refuse; and (4) lack of genuine necessity where the evidence is available to the foreign party by other means. Costs may be sought from the foreign requesting party where the witness substantially succeeds.

Jurisdiction: This fork operates in the Ontario Superior Court of Justice. The witness appears as respondent to a Notice of Application brought under s 46 of the Canada Evidence Act, RSC 1985, c C-5, and s 60 of the Ontario Evidence Act, RSO 1990, c E.23.

The Process at a Glance: Upon being served with the Notice of Application and letters rogatory, the witness retains Ontario counsel and obtains an assessment of viable grounds to oppose. Counsel reviews the six-factor test and identifies the strongest objection grounds. A Responding Application Record is prepared, including the witness affidavit. If privilege is claimed, a privilege log is prepared. The matter proceeds to a hearing before a Superior Court judge. In parallel, counsel explores whether a negotiated narrowed scope can avoid a contested hearing. If opposing outright, the witness argues at the hearing and seeks costs. If the order is partially granted, counsel ensures any examination obligations are scoped precisely.

Key Legislation and Case Law: s 46, Canada Evidence Act, RSC 1985, c C-5. s 60, Ontario Evidence Act, RSO 1990, c E.23. Gulf Oil Corp v Gulf Canada Ltd [1980] 2 SCR 39 - enforcement refused where contrary to Canadian public policy. Re Friction Division Products Inc and E I Du Pont de Nemours & Co Inc (No 2) (1986) 56 OR (2d) 722 - the six-factor test, including the specificity requirement. Personal Health Information Protection Act, SO 2004, c 3 where health records are engaged. Case law research via CanLII.

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