EXHIBIT 10.50 EMPLOYMENT AGREEMENT THIS AGREEMENT by and between Biogen, Inc., a Massachusetts corporation (the "Company"), and James C. Mullen (the "Executive"), dated and effective as of March 6, 2003 (the "Effective Date"). WHEREAS, the Company...Employment Agreement • March 14th, 2003 • Biogen Inc • Biological products, (no disgnostic substances) • Massachusetts
ANTEGRENDevelopment and Marketing Collaboration Agreement • March 14th, 2003 • Biogen Inc • Biological products, (no disgnostic substances) • New York
