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EP 4 304 595 A1

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(43) Date of publication: 17.01.2024 Bulletin 2024/03 (21) Application number: 22714058.9 (22) Date of filing: 11.03.2022

(51) International Patent Classification (IPC):  A61K 31/485(2006.01) A61K 9/00(2006.01) A61M 5/00(2006.01) A61F 2/00(2006.01) A61L 31/00(2006.01) A61K 47/18(2017.01) (52) Cooperative Patent Classification (CPC): A61K 9/0043; A61K 47/183; A61K 31/485; A61M 2210/0618; A61K 9/08 (86) International application number: PCT/US2022/019918 (87) International publication number: WO 2022/192652 (15.09.2022 Gazette 2022/37)

(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: 12.03.2021 US 202163160563 P 21.04.2021 US 202163177772 P 30.08.2021 US 202163238729 P 31.08.2021 US 202117463079 (71) Applicant: Pocket Naloxone Corp. Bethesda, MD 20816 (US)

(72) Inventors: MATHAI, Ashanthi Bethesda, MD 20816 (US) FROST, Michael Warrington, PA 18976 (US) KIM, Serena Princeton, NJ 08540 (US) KOPPENHAGEN, Franciscus Salem, NH 03079 (US) ORINGHER, Seth Rockville, MD 20850 (US) (74) Representative: Marks & Clerk LLP  15 Fetter Lane London EC4A 1BW London EC4A 1BW (GB)