Berchtold said the affidavits behind the warrants were sealed in federal court.

Wells Fargo also said the affidavits will have no impact on its mortgage repurchase obligations.

Justice Christine Grice said the affidavits would not be admitted as evidence and she would explain her grounds at the case's conclusion.

As such, it said the affidavits "raise issues of general and public importance and significant issues specific to Mr Ellis' case".