definiens: shall be any Third Party subject to an [COMPANY] Acquisition or CAT Acquisition . 1.2 . Antibody shall mean a molecule or a gene encoding a molecule with a molecular weight greater than i@tQlilliQu$iiatMIDO O}tlJl ~ It~;j[***J and which -2 - Confidential Treatment Requested by letter dated February ' 2 ' ; 2002 comprises one or more immunoglobulin variable domains or parts of such domains or any existing or future fragments, variants, modifications or derivatives thereof ; provided, however, that such fragments, variants, modifications or derivatives retain at least a functional portion of an immunoglobulin variable domain, 1.3 . BLA shall mean a Biologics License Application or similar application filed with the FDA after completion of one or more human clinical trials to obtain Regulatory Approval for a Collaboration Product