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The patent EP3111380 was granted to Rigetti on Sep 4, 2019. The application was filed on Feb 27, 2015 under application number EP15796357A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| UEBERFLUSS | Jun 3, 2020 | SCHORR | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | WO2008067664 |
| INTERNATIONAL-SEARCH-REPORT | US2008109500 |
| INTERNATIONAL-SEARCH-REPORT | US2012005456 |
| INTERNATIONAL-SEARCH-REPORT | US2012319684 |
| INTERNATIONAL-SEARCH-REPORT | US2013005580 |
| INTERNATIONAL-SEARCH-REPORT | WO2012044149 |
| OTHER | EP2562694 |
| OTHER | US2008215850 |
| OTHER | US2009014714 |
| OTHER | US2012319085 |
| OTHER | WO2005093649 |
| SEARCH | EP2562694 |
| SEARCH | US2012319085 |
| SEARCH | WO2005093649 |
| SEARCH | WO2007147243 |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
Date
Description
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Nov 5, 2025
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Jun 16, 2025
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Mar 24, 2025
Mar 24, 2025
Mar 14, 2025
Mar 13, 2025
(Electronic) Receipt
Appeal
Mar 13, 2025
Mar 13, 2025
Mar 12, 2025
Mar 11, 2025
(Electronic) Receipt
Appeal
Mar 11, 2025
Mar 11, 2025
Feb 27, 2025
Feb 26, 2025
(Electronic) Receipt
Appeal
Feb 26, 2025
Feb 26, 2025
Nov 14, 2024
Nov 14, 2024
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May 21, 2024
(Electronic) Receipt
Appeal
May 21, 2024
May 21, 2024
May 6, 2024
May 6, 2024
Apr 30, 2024
Feb 24, 2023
Feb 17, 2023
(Electronic) Receipt
Appeal
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Feb 17, 2023
Reply to appeal
Appeal
Dec 20, 2022
Dec 14, 2022
Dec 14, 2022
Dec 13, 2022
(Electronic) Receipt
Appeal
Dec 13, 2022
Dec 13, 2022
Dec 9, 2022
Dec 9, 2022
Dec 8, 2022
(Electronic) Receipt
Appeal
Dec 8, 2022
Dec 8, 2022
Aug 17, 2022
Aug 9, 2022
Aug 9, 2022
Aug 9, 2022
Aug 9, 2022
Aug 9, 2022
Aug 9, 2022
Aug 9, 2022
Jul 19, 2022
Jun 13, 2022
Jun 13, 2022
Jun 9, 2022
(Electronic) Receipt
Appeal
Jun 9, 2022
Jun 9, 2022
Notice of appeal
Appeal
Mar 31, 2022
Mar 30, 2022
Mar 30, 2022
Mar 30, 2022
Mar 30, 2022
Mar 30, 2022
Mar 30, 2022
Means of redress
Search/Exam
Mar 30, 2022
Mar 30, 2022
Mar 30, 2022
Mar 30, 2022
Mar 30, 2022
Mar 10, 2022
Feb 18, 2022
Feb 18, 2022
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Feb 17, 2022
Feb 11, 2022
Feb 11, 2022
Feb 11, 2022
Feb 11, 2022
Nov 2, 2021
Sep 10, 2021
Sep 9, 2021
Sep 9, 2021
Sep 2, 2021
Sep 2, 2021
Sep 2, 2021
Sep 2, 2021
Sep 2, 2021
Jul 22, 2021
Jul 22, 2021
Jul 9, 2021
Jul 9, 2021
Mar 28, 2021
Mar 25, 2021
Mar 25, 2021
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Mar 23, 2021
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Mar 23, 2021
Mar 23, 2021
Feb 9, 2021
Feb 2, 2021
Feb 2, 2021
Feb 2, 2021
Feb 2, 2021
Feb 2, 2021
Jan 26, 2021
Jan 26, 2021
Annex
OPPO
Jan 26, 2021
Jan 26, 2021
Jan 26, 2021
Jan 26, 2021
Jan 26, 2021
Jan 26, 2021
Oct 19, 2020
Oct 14, 2020
Oct 14, 2020
Oct 14, 2020
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Oct 14, 2020
Jul 3, 2020
Jul 3, 2020
Jul 3, 2020
Jun 30, 2020
Jun 30, 2020
Jun 19, 2020
Jun 19, 2020
Jun 17, 2020
Jun 4, 2020
Jun 4, 2020
Jun 4, 2020
Jun 4, 2020
Jun 4, 2020
Jun 4, 2020
Jun 3, 2020
Jun 3, 2020
Jun 3, 2020
Jun 3, 2020
Jun 3, 2020
Sep 16, 2019
Aug 8, 2019
Decision to grant a European patent
Search/Exam
Jul 25, 2019
Jul 25, 2019
Jul 25, 2019
Intention to grant (signatures)
Search/Exam
Jul 25, 2019
Text intended for grant (clean copy)
Search/Exam
Jul 25, 2019
Jul 16, 2019
Jun 12, 2019
Jun 12, 2019
May 8, 2019
Citation in opposition procedure - 007
Search/Exam
May 8, 2019
Citation in opposition procedure - 008
Search/Exam
May 8, 2019
Citation in opposition procedure - 009
Search/Exam
May 8, 2019
Observations by third parties
Search/Exam
Apr 23, 2019
Apr 18, 2019
Change to the inventor details
Search/Exam
Apr 9, 2019
(Electronic) Receipt
Search/Exam
Apr 9, 2019
Amended claims with annotations
Search/Exam
Apr 9, 2019
Claims
Search/Exam
Apr 9, 2019
French translation of claims
Search/Exam
Apr 9, 2019
German translation of the claims
Search/Exam
Apr 9, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 9, 2019
Jan 31, 2019
Jan 18, 2019
Jan 18, 2019
Dec 24, 2018
Citation in opposition procedure - 004
Search/Exam
Dec 24, 2018
Citation in opposition procedure - 005
Search/Exam
Dec 24, 2018
Citation in opposition procedure - 006
Search/Exam
Dec 24, 2018
Observations by third parties
Search/Exam
Dec 7, 2018
Dec 7, 2018
Dec 7, 2018
Intention to grant (signatures)
Search/Exam
Dec 7, 2018
Text intended for grant (clean copy)
Search/Exam
Dec 7, 2018
Oct 24, 2018
Examination started
Search/Exam
May 31, 2018
(Electronic) Receipt
Search/Exam
May 31, 2018
May 31, 2018
Amended claims with annotations
Search/Exam
May 31, 2018
May 31, 2018
Amended description with annotations
Search/Exam
May 31, 2018
Amendments received before examination
Search/Exam
May 31, 2018
Letter accompanying subsequently filed items
Search/Exam
Nov 21, 2017
Nov 3, 2017
Nov 3, 2017
European search opinion
Search/Exam
Nov 3, 2017
Information on Search Strategy
Search/Exam
Nov 3, 2017
Supplementary European search report
Search/Exam
Oct 19, 2017
Search started
Search/Exam
Dec 7, 2016
Oct 6, 2016
Oct 4, 2016
Communication to designated inventor
Search/Exam
Oct 4, 2016
Communication to designated inventor
Search/Exam
Sep 19, 2016
Jul 14, 2016
(Electronic) Receipt
Search/Exam
Jul 14, 2016
Jul 14, 2016
Request for entry into the European phase
Search/Exam
Jun 28, 2016
Jun 27, 2016
Notification of the recording of a change
Search/Exam
Jun 21, 2016
Notification of the recording of a change
Search/Exam
Jan 28, 2016
Copy of the international search report
Search/Exam
Jan 28, 2016
Dec 14, 2015
Dec 14, 2015
Dec 14, 2015
Dec 11, 2015
Notification of the recording of a change
Search/Exam
Nov 26, 2015
Published international application - A2
Search/Exam