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Extract from the Register of European Patents

EP About this file: EP4022684

EP4022684 - ION IMPLANT DEFINED NANOROD IN A SUSPENDED MAJORANA FERMION DEVICE [Right-click to bookmark this link]
StatusThe patent has been granted
Status updated on  20.06.2025
Database last updated on 28.03.2026
FormerGrant of patent is intended
Status updated on  07.04.2025
FormerRequest for examination was made
Status updated on  03.06.2022
FormerThe international publication has been made
Status updated on  29.05.2021
Formerunknown
Status updated on  24.11.2020
Most recent event   Tooltip20.03.2026Lapse of the patent in a contracting state
New state(s): RO		published on 22.04.2026 [2026/17]
Applicant(s)For all designated states
International Business Machines Corporation
New Orchard Road
Armonk, New York 10504 / US
[2022/27]
Inventor(s)01 / HOLMES, Steven
c/o IBM Thomas J Watson Research Center 1101
Kitchawan Road Route 134, P.O. Box 218
Yorktown Heights, New York 10598 / US
02 / SADANA, Devendra
c/o IBM Thomas J Watson Research Center 1101
Kitchawan Road Route 134, P.O. Box 218
Yorktown Heights, New York 10598 / US
03 / HART, Sean
c/o IBM Thomas J Watson Research Center 1101
Kitchawan Road Route 134, P.O. Box 218
Yorktown Heights, New York 10598 / US
04 / GUMANN, Patryk
c/o IBM Thomas J Watson Research Center 1101
Kitchawan Road Route 134, P.O. Box 218
Yorktown Heights, New York 10598 / US
05 / BEDELL, Stephen
c/o IBM Thomas J Watson Research Center 1101
Kitchawan Road Route 134, P.O. Box 218
Yorktown Heights, New York 10598 / US
06 / LI, Ning
c/o IBM Thomas J Watson Research Center 1101
Kitchawan Road Route 134, P.O. Box 218
Yorktown Heights, New York 10598 / US
 [2022/27]
Representative(s)IBM Deutschland GmbH
Intellectual Property Law
IBM Campus 1
71139 Ehningen / DE
[N/P]
Former [2025/30]Hämmerling, Jens
IBM Deutschland GmbH
Patentwesen u. Urheberrecht
Schönaicher Straße 220
71032 Böblingen / DE
Former [2022/27]Ferara, Nina
IBM Deutschland GmbH
Patentwesen u. Urheberrecht
IBM-Allee 1
71139 Ehningen / DE
Application number, filing date20807356.913.11.2020
[2022/27]
WO2020EP82086
Priority number, dateUS20191668838619.11.2019         Original published format: US201916688386
[2022/27]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2021099222
Date:27.05.2021
Language:EN
[2021/21]
Type: A1 Application with search report 
No.:EP4022684
Date:06.07.2022
Language:EN
The application published by WIPO in one of the EPO official languages on 27.05.2021 takes the place of the publication of the European patent application.
[2022/27]
Type: B1 Patent specification 
No.:EP4022684
Date:23.07.2025
Language:EN
[2025/30]
Search report(s)International search report - published on:EP27.05.2021
ClassificationIPC:H10N60/10, H10N60/01, H10N60/81, H10D62/10, H10D62/85, H01L21/266
[2025/14]
CPC:
H10P30/22 (EP); H10D64/205 (US); B82Y10/00 (US);
B82Y40/00 (US); H10D62/118 (EP); H10D62/121 (EP,US);
H10N60/01 (EP); H10N60/0912 (US); H10N60/128 (EP);
H10N60/81 (EP); H10N60/84 (US); H10P30/206 (EP);
H10P30/208 (EP) (-)
Former IPC [2022/27]H01L27/18, G06N10/00, H01L39/02, H01L39/22, H01L39/24, H01L29/06
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 [2022/27]
Extension statesBANot yet paid
MENot yet paid
Validation statesKHNot yet paid
MANot yet paid
MDNot yet paid
TNNot yet paid
TitleGerman:IONENIMPLANTATDEFINIERTER NANOSTAB IN EINER SUSPENDIERTEN MAJORANA-FERMIONEN-VORRICHTUNG[2022/27]
English:ION IMPLANT DEFINED NANOROD IN A SUSPENDED MAJORANA FERMION DEVICE[2022/27]
French:NANOTIGE DÉFINIE PAR IMPLANT IONIQUE DANS UN DISPOSITIF DE FERMION DE MAJORANA SUSPENDU[2022/27]
Entry into regional phase31.03.2022National basic fee paid 
31.03.2022Designation fee(s) paid 
31.03.2022Examination fee paid 
Examination procedure31.03.2022Amendment by applicant (claims and/or description)
31.03.2022Examination requested  [2022/27]
31.03.2022Date on which the examining division has become responsible
08.04.2025Communication of intention to grant the patent
18.06.2025Fee for grant paid
18.06.2025Fee for publishing/printing paid
18.06.2025Receipt of the translation of the claim(s)
Divisional application(s)EP25182854.7  / EP4597546
Fees paidRenewal fee
15.11.2022Renewal fee patent year 03
14.11.2023Renewal fee patent year 04
02.12.2024Renewal fee patent year 05
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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  TooltipAT23.07.2025
BG23.07.2025
ES23.07.2025
FI23.07.2025
HR23.07.2025
LV23.07.2025
PL23.07.2025
RO23.07.2025
SE23.07.2025
NO23.10.2025
RS23.10.2025
GR24.10.2025
IS23.11.2025
PT24.11.2025
[2026/17]
Former [2026/11]AT23.07.2025
BG23.07.2025
ES23.07.2025
FI23.07.2025
HR23.07.2025
LV23.07.2025
PL23.07.2025
SE23.07.2025
NO23.10.2025
RS23.10.2025
GR24.10.2025
IS23.11.2025
PT24.11.2025
Former [2026/10]AT23.07.2025
BG23.07.2025
FI23.07.2025
HR23.07.2025
LV23.07.2025
PL23.07.2025
SE23.07.2025
NO23.10.2025
RS23.10.2025
GR24.10.2025
IS23.11.2025
PT24.11.2025
Former [2026/09]AT23.07.2025
FI23.07.2025
HR23.07.2025
LV23.07.2025
SE23.07.2025
NO23.10.2025
GR24.10.2025
IS23.11.2025
PT24.11.2025
Former [2026/08]AT23.07.2025
FI23.07.2025
HR23.07.2025
NO23.10.2025
IS23.11.2025
PT24.11.2025
Former [2026/07]IS23.11.2025
PT24.11.2025
Former [2026/03]PT24.11.2025
Cited inInternational search[A] WO2019074557  (MICROSOFT TECHNOLOGY LICENSING LLC et al.)
 [A] WO2017153388  (UNIV COPENHAGEN et al.) [A] 1-16 * paragraphs [0070] - [0092]; figure 1 *
 [A] WO2019180267  (UNIV COPENHAGEN et al.) [A] 1-16 * page 2, line 30 - page 12, line 2; figures 1-4 *
 [A] US10177297  (MARCUS CHARLES M et al.) [A] 1-16 * page 2, line 10 - page 4, line 25 * * page 6, lines 18-22; figure 5 * * page 11, line 4 - page 14, line 1 *
 [A] US2016035470  (YAZDANI ALI et al.) [A] 1-16 * column 5, line 3 - column 11, line 67; figures 7a,7b *
 [A] US2019013457  (LUTCHYN ROMAN et al.) [A] 1-16 * paragraphs [0037] - [0048]; figures 1-5 *
 [YA] WO2007032802  (UNIV HOUSTON et al.) [A] 20-23
 [A]   V. MOURIK ET AL: "Signatures of Majorana Fermions in Hybrid Superconductor-Semiconductor Nanowire Devices", SCIENCE, vol. 336, no. 6084, 25 May 2012 (2012-05-25), pages 1003 - 1007, XP055150634, ISSN: 0036-8075, DOI: 10.1126/science.1222360

DOI:   http://dx.doi.org/10.1126/science.1222360
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.