definiens: shall mean copie s of the Product Registrations, together with copie s of related correspondence between Seller or any of the Divesti ng Entities and the applicable Governmental 5 Authority, current approved packaging and any other existing files and dossiers, in each case relating solely to the Product Registrations and/or to the underlying data or information used to support, maintain or obtain marketing authorization of the underlying Product ; provided h owever that with respect to any such correspondence, packaging, files and dossiers that are not solely r elated to such Product Registrations and/or such un derlying data or information, but that are necessary or otherwise used or held for use in the conduct of the Busines s as of the Closing Date, then Seller shall, and shall cause ea ch other applicable Divesting Entity to, use commer cially reasonable efforts to extract or redact such corres pondence, packaging, files and dossiers and transfe r to Purchaser all portions of such correspondence, packaging, fil es and dossiers that are solely related to such Pro duct Registrations and/or such underlying data or inform ation