Questione giuridica chiave
Whether the appellant sufficiently substantiated an ownership-based claim for return of its original documents.
Decisione estratta
The claim was not sufficiently substantiated on the record, so the lower court could reject it.
Motivazione estratta
Whether a claim is sufficiently substantiated is governed by federal law; the appellant failed to show by precise record references that it had properly pleaded the factual basis of ownership.