(19)

(11)

EP 4 798 598 A1

(12)

(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24804674.0 (22) Date of filing: 24.10.2024

(51) International Patent Classification (IPC):  C07H 19/14(2006.01) A61P 35/00(2006.01) C07H 19/16(2006.01) A61K 31/70(2006.01) (52) Cooperative Patent Classification (CPC): C07H 19/16; C07H 19/14; A61P 35/00 (86) International application number: PCT/US2024/052824 (87) International publication number: WO 2025/090774 (01.05.2025 Gazette 2025/18)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 24.10.2023 US 202363592895 P (71) Applicant: Seagen Inc. Bothell, WA 98021 (US)	(72) Inventors: NEUMANN, Christopher Scott Bothell, Washington 98021 (US) OLIVAS, Kathleen Christina Bothell, Washington 98021 (US) ASHMUS, Roger A. Bothell, Washington 98021 (US) (74) Representative: Pfizer  European Patent Department 23-25 avenue du Docteur Lannelongue 75668 Paris Cedex 14 75668 Paris Cedex 14 (FR)