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Extract from the Register of European Patents

EP About this file: EP3815323

EP3815323 - SECURE VIRTUAL MACHINE MIGRATION USING ENCRYPTED MEMORY TECHNOLOGIES [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  28.02.2025
Database last updated on 08.04.2026
FormerThe patent has been granted
Status updated on  22.03.2024
FormerGrant of patent is intended
Status updated on  26.11.2023
FormerRequest for examination was made
Status updated on  03.04.2021
FormerThe international publication has been made
Status updated on  03.01.2020
Most recent event   Tooltip13.03.2026Lapse of the patent in a contracting state
New state(s): HU		published on 15.04.2026 [2026/16]
Applicant(s)For all designated states
INTEL Corporation
2200 Mission College Blvd.
Santa Clara, CA 95054 / US
[2021/18]
Inventor(s)01 / PATEL, Baiju V.
2817 NW 81st Pl.
Portland, Oregon 97229 / US
02 / SOOD, Kapil
6771 NW Flora Vista Terrace
Portland, Oregon 97229 / US
03 / LI, Weigang
93 302, No. 811 Dong Chuan Road
Shanghai 200240 / CN
04 / YU, Ping
No. 880 Zi Xing Road, Shanghai Zizhu Science Park
Shanghai 200241 / CN
05 / WEI, Changzheng
No. 880 Zi Xing Road, Shanghai Zizhu Science Park
Shanghai 200241 / CN
06 / WANG, Junyan
93 302, No. 811 Dong Chuan Road
Shanghai 200240 / CN
07 / ZENG, Xin
93 302, No. 811 Dong Chuan Road
Shanghai 200240 / CN
 [2021/18]
Representative(s)Goddar, Heinz J.
Boehmert & Boehmert
Anwaltspartnerschaft mbB
Pettenkoferstrasse 22
80336 München / DE
[2021/18]
Application number, filing date18924608.528.06.2018
[2021/18]
WO2018CN93232
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2020000285
Date:02.01.2020
Language:EN
[2020/01]
Type: A1 Application with search report 
No.:EP3815323
Date:05.05.2021
Language:EN
The application published by WIPO in one of the EPO official languages on 02.01.2020 takes the place of the publication of the European patent application.
[2021/18]
Type: B1 Patent specification 
No.:EP3815323
Date:24.04.2024
Language:EN
[2024/17]
Search report(s)International search report - published on:CN02.01.2020
(Supplementary) European search report - dispatched on:EP04.01.2022
ClassificationIPC:G06F21/53, G06F21/60, H04L9/08, G06F9/455, H04L9/40
[2023/48]
CPC:
H04L63/0435 (EP); G06F9/45558 (EP,US); G06F12/1408 (US);
G06F21/53 (EP,US); G06F21/602 (EP,US); G06F21/64 (US);
H04L9/0861 (EP); G06F2009/4557 (EP,US); G06F2009/45583 (US);
G06F2009/45587 (US); G06F2221/2149 (US) (-)
Former IPC [2022/04]G06F21/53, G06F21/60, H04L9/08, G06F9/455, H04L29/06
Former IPC [2021/18]H04L29/06
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 [2021/18]
Extension statesBANot yet paid
MENot yet paid
Validation statesKHNot yet paid
MANot yet paid
MDNot yet paid
TNNot yet paid
TitleGerman:SICHERE MIGRATION EINER VIRTUELLEN MASCHINE UNTER VERWENDUNG VON VERSCHLÜSSELTEN SPEICHERTECHNOLOGIEN[2021/18]
English:SECURE VIRTUAL MACHINE MIGRATION USING ENCRYPTED MEMORY TECHNOLOGIES[2021/18]
French:MIGRATION DE MACHINE VIRTUELLE SÉCURISÉE À L'AIDE DE TECHNOLOGIES À MÉMOIRE CHIFFRÉES[2021/18]
Entry into regional phase02.09.2020National basic fee paid 
02.09.2020Search fee paid 
02.09.2020Designation fee(s) paid 
02.09.2020Examination fee paid 
Examination procedure02.09.2020Examination requested  [2021/18]
19.07.2022Amendment by applicant (claims and/or description)
27.11.2023Communication of intention to grant the patent
14.03.2024Fee for grant paid
14.03.2024Fee for publishing/printing paid
14.03.2024Receipt of the translation of the claim(s)
Opposition(s)27.01.2025No opposition filed within time limit [2025/14]
Fees paidRenewal fee
02.09.2020Renewal fee patent year 03
14.06.2021Renewal fee patent year 04
26.05.2022Renewal fee patent year 05
29.05.2023Renewal fee patent year 06
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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  TooltipCY28.06.2018
HU28.06.2018
AT24.04.2024
BG24.04.2024
CZ24.04.2024
DK24.04.2024
EE24.04.2024
ES24.04.2024
FI24.04.2024
HR24.04.2024
IT24.04.2024
LV24.04.2024
MC24.04.2024
PL24.04.2024
RO24.04.2024
SE24.04.2024
SI24.04.2024
SK24.04.2024
SM24.04.2024
IE28.06.2024
LU28.06.2024
BE30.06.2024
CH30.06.2024
NO24.07.2024
RS24.07.2024
GR25.07.2024
IS24.08.2024
PT26.08.2024
[2026/16]
Former [2026/10]CY28.06.2018
AT24.04.2024
BG24.04.2024
CZ24.04.2024
DK24.04.2024
EE24.04.2024
ES24.04.2024
FI24.04.2024
HR24.04.2024
IT24.04.2024
LV24.04.2024
MC24.04.2024
PL24.04.2024
RO24.04.2024
SE24.04.2024
SI24.04.2024
SK24.04.2024
SM24.04.2024
IE28.06.2024
LU28.06.2024
BE30.06.2024
CH30.06.2024
NO24.07.2024
RS24.07.2024
GR25.07.2024
IS24.08.2024
PT26.08.2024
Former [2025/51]CY28.06.2018
AT24.04.2024
BG24.04.2024
CZ24.04.2024
DK24.04.2024
EE24.04.2024
ES24.04.2024
FI24.04.2024
HR24.04.2024
LV24.04.2024
MC24.04.2024
PL24.04.2024
RO24.04.2024
SE24.04.2024
SI24.04.2024
SK24.04.2024
SM24.04.2024
IE28.06.2024
LU28.06.2024
BE30.06.2024
CH30.06.2024
NO24.07.2024
RS24.07.2024
GR25.07.2024
IS24.08.2024
PT26.08.2024
Former [2025/42]AT24.04.2024
BG24.04.2024
CZ24.04.2024
DK24.04.2024
EE24.04.2024
ES24.04.2024
FI24.04.2024
HR24.04.2024
LV24.04.2024
MC24.04.2024
PL24.04.2024
RO24.04.2024
SE24.04.2024
SI24.04.2024
SK24.04.2024
SM24.04.2024
IE28.06.2024
LU28.06.2024
BE30.06.2024
CH30.06.2024
NO24.07.2024
RS24.07.2024
GR25.07.2024
IS24.08.2024
PT26.08.2024
Former [2025/22]AT24.04.2024
BG24.04.2024
CZ24.04.2024
DK24.04.2024
EE24.04.2024
ES24.04.2024
FI24.04.2024
HR24.04.2024
LV24.04.2024
MC24.04.2024
PL24.04.2024
RO24.04.2024
SI24.04.2024
SK24.04.2024
SM24.04.2024
IE28.06.2024
LU28.06.2024
BE30.06.2024
CH30.06.2024
NO24.07.2024
RS24.07.2024
GR25.07.2024
IS24.08.2024
PT26.08.2024
Former [2025/13]AT24.04.2024
BG24.04.2024
CZ24.04.2024
DK24.04.2024
EE24.04.2024
ES24.04.2024
FI24.04.2024
HR24.04.2024
LV24.04.2024
MC24.04.2024
PL24.04.2024
RO24.04.2024
SK24.04.2024
SM24.04.2024
LU28.06.2024
NO24.07.2024
RS24.07.2024
GR25.07.2024
IS24.08.2024
PT26.08.2024
Former [2025/11]AT24.04.2024
BG24.04.2024
CZ24.04.2024
DK24.04.2024
EE24.04.2024
ES24.04.2024
FI24.04.2024
HR24.04.2024
LV24.04.2024
MC24.04.2024
PL24.04.2024
RO24.04.2024
SK24.04.2024
SM24.04.2024
NO24.07.2024
RS24.07.2024
GR25.07.2024
IS24.08.2024
PT26.08.2024
Former [2025/10]AT24.04.2024
BG24.04.2024
CZ24.04.2024
DK24.04.2024
EE24.04.2024
ES24.04.2024
FI24.04.2024
HR24.04.2024
LV24.04.2024
PL24.04.2024
RO24.04.2024
SK24.04.2024
SM24.04.2024
NO24.07.2024
RS24.07.2024
GR25.07.2024
IS24.08.2024
PT26.08.2024
Former [2025/09]AT24.04.2024
BG24.04.2024
DK24.04.2024
EE24.04.2024
ES24.04.2024
FI24.04.2024
HR24.04.2024
LV24.04.2024
PL24.04.2024
NO24.07.2024
RS24.07.2024
GR25.07.2024
IS24.08.2024
PT26.08.2024
Former [2025/08]AT24.04.2024
BG24.04.2024
DK24.04.2024
ES24.04.2024
FI24.04.2024
HR24.04.2024
LV24.04.2024
PL24.04.2024
NO24.07.2024
RS24.07.2024
GR25.07.2024
IS24.08.2024
PT26.08.2024
Former [2024/49]AT24.04.2024
BG24.04.2024
ES24.04.2024
FI24.04.2024
HR24.04.2024
LV24.04.2024
PL24.04.2024
NO24.07.2024
RS24.07.2024
GR25.07.2024
IS24.08.2024
PT26.08.2024
Former [2024/48]AT24.04.2024
BG24.04.2024
ES24.04.2024
FI24.04.2024
HR24.04.2024
NO24.07.2024
GR25.07.2024
IS24.08.2024
PT26.08.2024
Former [2024/47]BG24.04.2024
FI24.04.2024
HR24.04.2024
NO24.07.2024
GR25.07.2024
IS24.08.2024
PT26.08.2024
Former [2024/46]BG24.04.2024
FI24.04.2024
HR24.04.2024
NO24.07.2024
IS24.08.2024
Documents cited:Search[I] US9712503  (AHMED KHAJA EHTESHAMUDDIN et al.) [I] 8-14 * column 1, line 65 - column 6, line 26 * * figure 1 *
 [A] US2017277898  (POWELL JEREMY W et al.) [A] 1-14 * paragraphs [0017] , [0021] * * paragraphs [0065] - [0066] * * figure 1 *
 [A] GB2500219  (IBM et al.) [A] 1-14 * page 4, line 13 - page 7, line 31 * * figure 2 *
International search[A] CN103139221  (INST OF SOFTWARE CAS et al.) [A] 1-20 * the whole document *
 [A] CN101897211  (MICROSOFT CORP et al.) [A] 1-20 * the whole document *
 [A] US9317326  (RAMANATHAN ARUNACHALAM et al.) [A] 1-20 * the whole document *
 [A] CN106462458  (UNIV DALIAN TECH et al.) [A] 1-20 * the whole document *
 [A] CN101984631  (BEIJING SHIJIHULIAN ENGINEERING TECHNOLOGY SERVICE CO LTD et al.) [A] 1-20 * the whole document *
 [A] US2013191648  (BURSELL MICHAEL et al.) [A] 1-20 * the whole document *
by applicantUS9712503
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.