Will the DOJ claim a Biden pardon is void in court?

If an official filing or statement made during oral argument in a federal court proceeding (e.g. briefs, motions, memoranda, or arguments made before the court on the record) contain a statement by the Department of Justice that a pardon issued by President Joe Biden is invalid (or “void”, “unenforceable”, or equivalent) before Jan 1, 2027, then the market resolves to Yes.