In English and English-derived legal systems, an Anton Piller order is a court order that provides the right to search premises and seize evidence without prior warning. Wikipedia

Court order which provides for the right to search premises without prior warning Wikipedia Disambiguation

court order for search and seizure of evidence Wikidata

A court order allowing a plaintiff to go to someone's premises and seize documents (entry must be with that person's permission, but if refused would be a contempt of court). Used in extreme cases when a prospective defendant might destroy documents, especially computer files, if they knew a court case was coming. Wiktionary