Exhibit 10.20 AMENDED AND RESTATED EMPLOYMENT AGREEMENT THIS AMENDED AND RESTATED EMPLOYMENT AGREEMENT (this "Agreement"), dated as of February 11, 2005, by and between Alteon Inc., a Delaware corporation (the "Company"), and Judith S. Hedstrom (the...Employment Agreement • March 15th, 2005 • Alteon Inc /De • Pharmaceutical preparations
ALTEON INC.Alteon Inc /De • March 15th, 2005 • Pharmaceutical preparations • New York
Exhibit 10.19 AMENDED AND RESTATED EMPLOYMENT AGREEMENT THIS AMENDED AND RESTATED EMPLOYMENT AGREEMENT (this "Agreement") is dated as of December 15, 2004 by and between Alteon Inc., a Delaware corporation (the "Company"), and Kenneth I. Moch (the...Employment Agreement • March 15th, 2005 • Alteon Inc /De • Pharmaceutical preparations • New Jersey
ALTEON INC.Warrant And • March 15th, 2005 • Alteon Inc /De • Pharmaceutical preparations • New York
