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The patent EP3111381 was granted to Rigetti on Jan 6, 2021. The application was filed on Feb 27, 2015 under application number EP15796784A. 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 |
|---|---|---|---|
| SCHORR | Oct 6, 2021 | DIEHL & PARTNER | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | US2012326720 |
| INTERNATIONAL-SEARCH-REPORT | US2008131047 |
| INTERNATIONAL-SEARCH-REPORT | US2012124432 |
| INTERNATIONAL-SEARCH-REPORT | US2012319684 |
| INTERNATIONAL-SEARCH-REPORT | US2013005580 |
| OPPOSITION | US2012319085 |
| OPPOSITION | US2012319684 |
| OPPOSITION | US2012326720 |
| OPPOSITION | WO2005093649 |
| OTHER | US2012319085 |
| OTHER | US2012319684 |
| OTHER | US2012326720 |
| OTHER | WO2005093649 |
| SEARCH | US2012319085 |
| SEARCH | WO2005093649 |
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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(Electronic) Receipt
Appeal
Feb 26, 2025
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Nov 14, 2024
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Oct 6, 2023
Oct 4, 2023
(Electronic) Receipt
Appeal
Oct 4, 2023
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(Electronic) Receipt
Appeal
Aug 4, 2023
Aug 4, 2023
Notice of appeal
Appeal
May 30, 2023
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Means of redress
OPPO
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Document concerning representation
Search/Exam
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Jan 20, 2021
Dec 10, 2020
Decision to grant a European patent
Search/Exam
Dec 9, 2020
Intention to grant (signatures)
Search/Exam
Dec 1, 2020
Dec 1, 2020
Dec 1, 2020
Text intended for grant (clean copy)
Search/Exam
Dec 1, 2020
Oct 14, 2020
(Electronic) Receipt
Search/Exam
Oct 14, 2020
Amended claims with annotations
Search/Exam
Oct 14, 2020
Claims
Search/Exam
Oct 14, 2020
French translation of claims
Search/Exam
Oct 14, 2020
German translation of the claims
Search/Exam
Oct 14, 2020
Letter accompanying subsequently filed items
Search/Exam
Oct 14, 2020
Jul 7, 2020
(Electronic) Receipt
Search/Exam
Jul 7, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 7, 2020
Jul 6, 2020
Jul 6, 2020
Jun 30, 2020
(Electronic) Receipt
Search/Exam
Jun 30, 2020
Jun 15, 2020
Jun 15, 2020
Jun 15, 2020
Intention to grant (signatures)
Search/Exam
Jun 15, 2020
Text intended for grant (clean copy)
Search/Exam
Jun 15, 2020
Feb 10, 2020
Annex to a communication
Search/Exam
Feb 10, 2020
Annex to the communication
Search/Exam
Feb 10, 2020
Consultation by telephone/in person
Search/Exam
Feb 10, 2020
Feb 5, 2020
Jan 27, 2020
Annex to the communication
Search/Exam
Jan 27, 2020
Consultation by telephone/in person
Search/Exam
Jan 27, 2020
Jan 2, 2020
(Electronic) Receipt
Search/Exam
Jan 2, 2020
Amended claims with annotations
Search/Exam
Jan 2, 2020
Amended claims with annotations
Search/Exam
Jan 2, 2020
Claims
Search/Exam
Jan 2, 2020
Claims
Search/Exam
Jan 2, 2020
Letter accompanying subsequently filed items
Search/Exam
Jan 2, 2020
Aug 6, 2019
Advice of delivery
Search/Exam
Jul 25, 2019
Acknowledgement of a document
Search/Exam
Jul 22, 2019
Annex to the communication
Search/Exam
Jul 22, 2019
Summons to attend oral proceedings
Search/Exam
Apr 8, 2019
Apr 5, 2019
Change to the inventor details
Search/Exam
Apr 4, 2019
(Electronic) Receipt
Search/Exam
Apr 4, 2019
Amended claims with annotations
Search/Exam
Apr 4, 2019
Amended description with annotations
Search/Exam
Apr 4, 2019
Claims
Search/Exam
Apr 4, 2019
Description
Search/Exam
Apr 4, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 4, 2019
Mar 28, 2019
(Electronic) Receipt
Search/Exam
Mar 28, 2019
Letter concerning the inventor
Search/Exam
Dec 4, 2018
Annex to the communication
Search/Exam
Dec 4, 2018
Communication from the Examining Division
Search/Exam
Nov 26, 2018
Examination started
Search/Exam
Sep 26, 2018
Sep 26, 2018
Sep 14, 2018
Non-patent literature filed by a third party
Search/Exam
Sep 14, 2018
Non-scannable object
Search/Exam
Sep 14, 2018
Observations by third parties
Search/Exam
Sep 14, 2018
Patent document filed by a Third party
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May 23, 2018
(Electronic) Receipt
Search/Exam
May 23, 2018
May 23, 2018
Amended claims with annotations
Search/Exam
May 23, 2018
May 23, 2018
Amended description with annotations
Search/Exam
May 23, 2018
Amendments received before examination
Search/Exam
May 23, 2018
Letter accompanying subsequently filed items
Search/Exam
Nov 14, 2017
Oct 26, 2017
Oct 26, 2017
European search opinion
Search/Exam
Oct 26, 2017
Information on Search Strategy
Search/Exam
Oct 26, 2017
Supplementary European search report
Search/Exam
Oct 17, 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
Sep 7, 2016
Refund of fees
Search/Exam
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 17, 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 10, 2015
Notification of the recording of a change
Search/Exam
Nov 26, 2015
Published international application - A2
Search/Exam