EXHIBIT 4.2 TRADEMARK COLLATERAL ASSIGNMENT AND SECURITY AGREEMENT ------------------------------------------------------ AGREEMENT made this 17th day of September, 2002 by and between AMERICAN BIOGENETIC SCIENCES, INC., a Delaware corporation...Trademark Collateral Assignment and Security Agreement • September 20th, 2002 • American Biogenetic Sciences Inc • Biological products, (no disgnostic substances) • New York
EXHIBIT 4.3 PATENT COLLATERAL ASSIGNMENT AND SECURITY AGREEMENT --------------------------------------------------- AGREEMENT made this 17th day of September, 2002 by and between AMERICAN BIOGENETIC SCIENCES, INC., a Delaware corporation ("DEBTOR"),...Patent Collateral Assignment and Security Agreement • September 20th, 2002 • American Biogenetic Sciences Inc • Biological products, (no disgnostic substances) • New York
EXHIBIT 4.4 CELL SECURITY AGREEMENT ----------------------- CELL SECURITY AGREEMENT made this 17th day of September, 2002 by and between AMERICAN BIOGENETIC SCIENCES, INC., a Delaware corporation ("DEBTOR"), with its chief executive office at 1375...Cell Security Agreement • September 20th, 2002 • American Biogenetic Sciences Inc • Biological products, (no disgnostic substances) • New York
