Exhibit 6.1 This Letter Agreement is effective as of September 26, 2002 by and between Agere Systems Inc. with offices at 1110 American Parkway NE, Allentown, Pennsylvania 18109 (hereinafter "Agere") and Chartered Semiconductor Manufacturing Ltd, a...Letter Agreement • November 14th, 2002 • Chartered Semiconductor Manufacturing LTD • Semiconductors & related devices • New York
