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EP 4 121 026 A1

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(43) Date of publication: 25.01.2023 Bulletin 2023/04 (21) Application number: 21771166.2 (22) Date of filing: 16.03.2021

(51) International Patent Classification (IPC):  A61K 31/14(2006.01) A61K 9/107(2006.01) A61K 9/00(2006.01) A61K 47/34(2017.01) A61P 31/14(2006.01) A61K 38/21(2006.01) A61K 47/44(2017.01) A61K 47/26(2006.01) A61K 45/06(2006.01) A61K 31/4706(2006.01) (52) Cooperative Patent Classification (CPC): A61K 47/44; A61K 47/26; A61K 31/14; A61K 45/06; A61P 31/14; A61K 9/1075; A61K 47/10; A61K 47/186; A61K 9/0014; A61K 9/0043; A61K 9/0048; A61K 31/4425; A61K 31/444; A61K 31/77; A61K 31/085   C-Sets: A61K 31/085, A61K 2300/00; A61K 31/14, A61K 2300/00; A61K 31/4425, A61K 2300/00; A61K 31/444, A61K 2300/00; A61K 31/77, A61K 2300/00; (86) International application number: PCT/US2021/022534 (87) International publication number: WO 2021/188518 (23.09.2021 Gazette 2021/38)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 17.03.2020 US 202062990534 P 24.03.2020 US 202016828542 (71) Applicant: Bluewillow Biologics, Inc. Ann Arbor MI 48105 (US)	(72) Inventors: PERALTA, David Ann Arbor, Michigan 48105 (US) CIOTTI, Susan Ann Arbor, Michigan 48105 (US) (74) Representative: Altmann Stößel Dick Patentanwälte PartG mbB  Theodor-Heuss-Anlage 2 68165 Mannheim 68165 Mannheim (DE)