Confidential Treatment Requested EXHIBIT 10.5.1 ADVANCE ROYALTY AGREEMENT THIS ROYALTY ADVANCE AGREEMENT (the "Agreement") is made this 9th day of January, 1997, by and between Boehringer Mannheim GmbH ("BM"), a German corporation, having a principal...Royalty Advance Agreement • July 11th, 1997 • Igen International Inc /Ca/ • Patent owners & lessors • Maryland
