Exhibit 4.6 PREFERRED STOCK PURCHASE AGREEMENT PREFERRED STOCK PURCHASE AGREEMENT (the "Agreement"), dated as of December 3, 1997 by and between ImClone Systems Incorporated, a Delaware corporation, with a principal place of business at 180 Varick...Preferred Stock Purchase Agreement • March 31st, 1998 • Imclone Systems Inc/De • Biological products, (no disgnostic substances) • Delaware
Exhibit 10.66 Amendment of December 1997 to the Research and License Agreement between ImClone Systems Incorporated and Merck KGaA WHEREAS ImClone Systems (hereinafter "ImClone") and Merck KGaA (hereinafter "Merck" ) are parties to a Research and...Research and License Agreement • March 31st, 1998 • Imclone Systems Inc/De • Biological products, (no disgnostic substances)
