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Extract from the Register of European Patents

EP About this file: EP3799641

EP3799641 - PROTECTING ARTIFICIAL INTELLIGENCE MODELS USING VIRTUAL SECURE MODE [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  05.12.2025
Database last updated on 28.03.2026
FormerThe patent has been granted
Status updated on  26.12.2024
FormerGrant of patent is intended
Status updated on  03.10.2024
FormerExamination is in progress
Status updated on  20.06.2024
FormerRequest for examination was made
Status updated on  05.03.2021
FormerThe international publication has been made
Status updated on  18.01.2020
Formerunknown
Status updated on  05.08.2019
Most recent event   Tooltip20.02.2026Lapse of the patent in a contracting state
New state(s): LU		published on 25.03.2026  [2026/13]
Applicant(s)For all designated states
Microsoft Technology Licensing, LLC
One Microsoft Way
Redmond, WA 98052-6399 / US
[2021/45]
Former [2021/14]For all designated states
Microsoft Technology Licensing, LLC
One Microsoft Way
Redmond, Washington 98052-6399 / US
Inventor(s)01 / SHEN, Wenbo
Microsoft Technology Licensing, LLC One Microsoft
Way
Redmond, Washington 98052-6399 / US
02 / NITTA, Bryston Mitsuo
Microsoft Technology Licensing, LLC One Microsoft
Way
Redmond, Washington 98052-6399 / US
03 / LIANG, Chen
Microsoft Technology Licensing, LLC One Microsoft
Way
Redmond, Washington 98052-6399 / US
04 / TERAN GUAJARDO, Adrian Francisco
Microsoft Technology Licensing, LLC One Microsoft
Way
Redmond, Washington 98052-6399 / US
 [2021/14]
Representative(s)Page White Farrer
Bedford House
21a John Street
London WC1N 2BF / GB
[2025/05]
Former [2021/14]Townsend, Martyn
Page White & Farrer Bedford House John Street
London WC1N 2BF / GB
Application number, filing date19744929.127.06.2019
[2021/14]
WO2019US39398
Priority number, dateUS20181603171510.07.2018         Original published format: US201816031715
[2021/14]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2020013996
Date:16.01.2020
Language:EN
[2020/03]
Type: A1 Application with search report 
No.:EP3799641
Date:07.04.2021
Language:EN
The application published by WIPO in one of the EPO official languages on 16.01.2020 takes the place of the publication of the European patent application.
[2021/14]
Type: B1 Patent specification 
No.:EP3799641
Date:29.01.2025
Language:EN
[2025/05]
Search report(s)International search report - published on:EP16.01.2020
ClassificationIPC:G06F21/14
[2021/14]
CPC:
G06F21/14 (EP); G06F21/53 (US); G06F21/51 (US);
G06F21/6209 (US); G06F9/45558 (US); G06N3/02 (US);
G06F2009/45587 (US) (-)
Designated contracting statesAL,   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 [2021/14]
Extension statesBANot yet paid
MENot yet paid
Validation statesKHNot yet paid
MANot yet paid
MDNot yet paid
TNNot yet paid
TitleGerman:SCHUTZ KÜNSTLICHER INTELLIGENZMODELLE UNTER VERWENDUNG EINES VIRTUELLEN SICHEREN MODUS[2021/14]
English:PROTECTING ARTIFICIAL INTELLIGENCE MODELS USING VIRTUAL SECURE MODE[2021/14]
French:PROTECTION DE MODÈLES D'INTELLIGENCE ARTIFICIELLE À L'AIDE D'UN MODE SÉCURISÉ VIRTUEL[2021/14]
Entry into regional phase04.01.2021National basic fee paid 
04.01.2021Designation fee(s) paid 
04.01.2021Examination fee paid 
Examination procedure04.01.2021Examination requested  [2021/14]
04.01.2021Date on which the examining division has become responsible
28.01.2021Amendment by applicant (claims and/or description)
19.06.2024Despatch of a communication from the examining division (Time limit: M02)
14.08.2024Reply to a communication from the examining division
04.10.2024Communication of intention to grant the patent
19.12.2024Fee for grant paid
19.12.2024Fee for publishing/printing paid
19.12.2024Receipt of the translation of the claim(s)
Opposition(s)30.10.2025No opposition filed within time limit [2026/02]
Fees paidRenewal fee
14.06.2021Renewal fee patent year 03
13.05.2022Renewal fee patent year 04
31.03.2023Renewal fee patent year 05
19.06.2024Renewal fee patent year 06
Opt-out from the exclusive  Tooltip
competence of the Unified
Patent Court		 See the Register of the Unified Patent Court for opt-out data
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Lapses during opposition  TooltipAT29.01.2025
BG29.01.2025
CZ29.01.2025
DK29.01.2025
EE29.01.2025
ES29.01.2025
FI29.01.2025
HR29.01.2025
IT29.01.2025
LV29.01.2025
MC29.01.2025
NL29.01.2025
PL29.01.2025
RO29.01.2025
SE29.01.2025
SK29.01.2025
SM29.01.2025
NO29.04.2025
RS29.04.2025
GR30.04.2025
IS29.05.2025
PT29.05.2025
LU27.06.2025
[2026/13]
Former [2026/11]AT29.01.2025
BG29.01.2025
CZ29.01.2025
DK29.01.2025
EE29.01.2025
ES29.01.2025
FI29.01.2025
HR29.01.2025
IT29.01.2025
LV29.01.2025
MC29.01.2025
NL29.01.2025
PL29.01.2025
RO29.01.2025
SE29.01.2025
SK29.01.2025
SM29.01.2025
NO29.04.2025
RS29.04.2025
GR30.04.2025
IS29.05.2025
PT29.05.2025
Former [2025/49]AT29.01.2025
BG29.01.2025
CZ29.01.2025
DK29.01.2025
EE29.01.2025
ES29.01.2025
FI29.01.2025
HR29.01.2025
IT29.01.2025
LV29.01.2025
NL29.01.2025
PL29.01.2025
RO29.01.2025
SE29.01.2025
SK29.01.2025
SM29.01.2025
NO29.04.2025
RS29.04.2025
GR30.04.2025
IS29.05.2025
PT29.05.2025
Former [2025/48]AT29.01.2025
BG29.01.2025
CZ29.01.2025
DK29.01.2025
EE29.01.2025
ES29.01.2025
FI29.01.2025
HR29.01.2025
IT29.01.2025
LV29.01.2025
NL29.01.2025
PL29.01.2025
SE29.01.2025
SM29.01.2025
NO29.04.2025
RS29.04.2025
GR30.04.2025
IS29.05.2025
PT29.05.2025
Former [2025/47]AT29.01.2025
BG29.01.2025
DK29.01.2025
ES29.01.2025
FI29.01.2025
HR29.01.2025
IT29.01.2025
LV29.01.2025
NL29.01.2025
PL29.01.2025
SE29.01.2025
SM29.01.2025
NO29.04.2025
RS29.04.2025
GR30.04.2025
IS29.05.2025
PT29.05.2025
Former [2025/46]AT29.01.2025
BG29.01.2025
ES29.01.2025
FI29.01.2025
HR29.01.2025
LV29.01.2025
NL29.01.2025
PL29.01.2025
SE29.01.2025
SM29.01.2025
NO29.04.2025
RS29.04.2025
GR30.04.2025
IS29.05.2025
PT29.05.2025
Former [2025/42]AT29.01.2025
BG29.01.2025
ES29.01.2025
FI29.01.2025
HR29.01.2025
LV29.01.2025
NL29.01.2025
PL29.01.2025
SE29.01.2025
NO29.04.2025
RS29.04.2025
GR30.04.2025
IS29.05.2025
PT29.05.2025
Former [2025/35]AT29.01.2025
BG29.01.2025
ES29.01.2025
FI29.01.2025
HR29.01.2025
LV29.01.2025
NL29.01.2025
PL29.01.2025
NO29.04.2025
RS29.04.2025
GR30.04.2025
IS29.05.2025
PT29.05.2025
Former [2025/34]ES29.01.2025
FI29.01.2025
HR29.01.2025
LV29.01.2025
NL29.01.2025
PL29.01.2025
NO29.04.2025
RS29.04.2025
IS29.05.2025
PT29.05.2025
Former [2025/33]ES29.01.2025
FI29.01.2025
NL29.01.2025
PL29.01.2025
RS29.04.2025
Former [2025/30]NL29.01.2025
Cited inInternational search[I] US2016140343  (NOVAK MARK FISHEL et al.) [I] 1-15 * abstract * * paragraph [0013] - paragraph [0015] * * paragraph [0338] - paragraph [0339] * * claim 1 * * figures 1, 4 *
 [A] US2017357910  (SOMMER BRUNO M et al.) [A] 1-15 * the whole document *
 [A] US2015082305  (HEPKIN DAVID A et al.) [A] 1-15 * the whole document *
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.