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(11)

EP 4 771 460 A1

(12)

(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 23818248.9 (22) Date of filing: 24.10.2023

(51) International Patent Classification (IPC):  G06F 1/16(2006.01) H04M 1/02(2006.01) (52) Cooperative Patent Classification (CPC): G06F 1/1681; G06F 1/1652; H04M 1/0268; H04M 1/022 (86) International application number: PCT/CN2023/126136 (87) International publication number: WO 2025/086084 (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: KH MA MD TN (71) Applicant: Microsoft Technology Licensing, LLC Redmond, WA 98052-6399 (US)	(72) Inventors: CAPLOW-MUNRO, Devin Samuel Jacob Redmond, Washington 98052 (US) WITT, Eric Paul Redmond, Washington 98052 (US) V YAREMENKO, Denys Redmond, Washington 98052 (US) TOMKY, Brett Andrew Redmond, Washington 98052 (US) LAU, Tung Yuen Redmond, Washington 98052 (US) (74) Representative: Page White Farrer  Bedford House 21a John Street London WC1N 2BF London WC1N 2BF (GB)