(19)

(11)

EP 1 675 871 A2

(12)

(88) Date of publication A3: 24.11.2005 (43) Date of publication: 05.07.2006 Bulletin 2006/27 (21) Application number: 04795967.1 (22) Date of filing: 12.10.2004

(51) International Patent Classification (IPC):  C07K 14/525(1995.01) (86) International application number: PCT/US2004/034880 (87) International publication number: WO 2005/035564 (21.04.2005 Gazette 2005/16)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 10.10.2003 US 510430 P (71) Applicant: Xencor Inc. Monrovia, CA 91016 (US)	(72) Inventors: DESJARLAIS, John, R. Pasadena, CA 91104 (US) STEED, Paul, Michael Chapel Hill, NC 27516 (US) ZALEVSKY, Jonathan Riverside, CA 92058 (US) SZYMKOWSKI, David, Edmund Monrovia, CA 91016 (US) (74) Representative: Kiddle, Simon John et al Mewburn Ellis LLP York House, 23 Kingsway London WC2B 6HP London WC2B 6HP (GB)