Background: Darius Bossé appealed a Federal Court decision rejecting his motion to submit additional affidavits in a case alleging violations of his linguistic rights under the Official Languages Act. Bossé claimed the ArriveCAN app operated only in English on his phone, and he couldn't switch to French.

Issues: The appeal focused on whether the Federal Court erred in its discretion under Rule 312 by not considering the unique nature of a remedy under the Official Languages Act and whether the additional affidavits were relevant.

Decision: The Federal Court of Appeal dismissed the appeal, upholding the lower court's decision and emphasizing the importance of presenting complete evidence initially rather than supplementing it later based on the opposing party's submissions.

Appellant was required to pay costs in the amount of $500.