(19)

(11)

EP 4 816 171 A1

(12)

(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24822100.4 (22) Date of filing: 26.11.2024

(51) International Patent Classification (IPC):  B33Y 70/00(2020.01) G03F 7/00(2006.01) G03F 7/038(2006.01) A61K 6/00(2020.01) A61C 7/08(2006.01) B33Y 80/00(2015.01) G03F 7/027(2006.01) G03F 7/105(2006.01) B29C 64/00(2017.01) B29C 64/124(2017.01) (52) Cooperative Patent Classification (CPC): G03F 7/0037; G03F 7/027; G03F 7/038; G03F 7/105; B33Y 70/00; B33Y 80/00; A61C 7/08 (86) International application number: PCT/US2024/057507 (87) International publication number: WO 2025/117572 (05.06.2025 Gazette 2025/23)

(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: 30.11.2023 US 202363604619 P (71) Applicant: Align Technology, Inc. San Jose, CA 95134 (US)	(72) Inventors: LEUNG, Adam San Jose, California 95134 (US) CHEN, Liang San Jose, California 95134 (US) (74) Representative: Carpmaels & Ransford LLP  One Southampton Row London WC1B 5HA London WC1B 5HA (GB)