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The patent EP3217336 was granted to Rigetti on Oct 1, 2025. The application was filed on Jan 31, 2017 under application number EP17153888A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 1, 2021 | SCHORR | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | US2015028970 |
| OPPOSITION | US5387864 |
| OPPOSITION | WO2015057839 |
| OPPOSITION | WO2015178991 |
| OTHER | EP3058618 |
| OTHER | US2015028970 |
| OTHER | US5387864 |
| OTHER | WO2015057839 |
| OTHER | WO2015178991 |
| SEARCH | US2015028970 |
| SEARCH | US5387864 |
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
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Appeal
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Appeal
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Appeal
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(Electronic) Receipt
Appeal
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Appeal
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Reply to appeal
Appeal
Feb 28, 2023
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(Electronic) Receipt
Appeal
Dec 21, 2022
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Notice of appeal
Appeal
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Means of redress
OPPO
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Authorisation
OPPO
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Sep 14, 2020
Aug 6, 2020
Decision to grant a European patent
Search/Exam
Jul 22, 2020
(Electronic) Receipt
Search/Exam
Jul 22, 2020
Filing of the translations of the claims
Search/Exam
Jul 22, 2020
French translation of claims
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Jul 22, 2020
German translation of the claims
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Jul 22, 2020
Letter accompanying subsequently filed items
Search/Exam
May 8, 2020
May 8, 2020
May 6, 2020
Apr 24, 2020
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Non-scannable object
Search/Exam
Apr 24, 2020
Non-scannable object
Search/Exam
Apr 24, 2020
Observations by third parties
Search/Exam
Mar 25, 2020
Mar 25, 2020
Mar 25, 2020
Intention to grant (signatures)
Search/Exam
Mar 25, 2020
Text intended for grant (clean copy)
Search/Exam
Mar 25, 2020
Feb 19, 2020
Annex to the communication
Search/Exam
Feb 19, 2020
Consultation by telephone/in person
Search/Exam
Feb 19, 2020
Feb 18, 2020
Feb 17, 2020
Feb 10, 2020
Annex to the communication
Search/Exam
Feb 10, 2020
Summons to attend oral proceedings
Search/Exam
Feb 6, 2020
(Electronic) Receipt
Search/Exam
Feb 6, 2020
Amended claims with annotations
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Feb 6, 2020
Amended claims with annotations
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Feb 6, 2020
Claims
Search/Exam
Feb 6, 2020
Claims
Search/Exam
Feb 6, 2020
Letter accompanying subsequently filed items
Search/Exam
Feb 6, 2020
Jan 30, 2020
(Electronic) Receipt
Search/Exam
Jan 30, 2020
Letter accompanying subsequently filed items
Search/Exam
Jan 30, 2020
Oral proceedings: reply to date proposed
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Jan 24, 2020
Jan 17, 2020
Annexes in respect of a client data request
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Jan 17, 2020
Letter accompanying subsequently filed items
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Jan 17, 2020
Jan 10, 2020
Annexes in respect of a client data request
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Jan 10, 2020
Annexes in respect of a client data request
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Jan 10, 2020
Oct 25, 2019
Advice of delivery
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Oct 23, 2019
Advice of delivery
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Oct 18, 2019
Acknowledgement of a document
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Oct 18, 2019
Annex to the communication
Search/Exam
Oct 18, 2019
Summons to attend oral proceedings
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Oct 11, 2019
Summons to attend oral proceedings
Search/Exam
Aug 20, 2019
(Electronic) Receipt
Search/Exam
Aug 20, 2019
Filing of the translations of the claims
Search/Exam
Aug 20, 2019
French translation of claims
Search/Exam
Aug 20, 2019
German translation of the claims
Search/Exam
Jun 21, 2019
Jun 21, 2019
Apr 30, 2019
Non-patent literature filed by a third party
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Apr 30, 2019
Non-patent literature filed by a third party
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Apr 30, 2019
Non-patent literature filed by a third party
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Apr 30, 2019
Non-patent literature filed by a third party
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Apr 30, 2019
Non-patent literature filed by a third party
Search/Exam
Apr 30, 2019
Non-scannable object
Search/Exam
Apr 30, 2019
Observations by third parties
Search/Exam
Apr 30, 2019
Patent document filed by a Third party
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Apr 30, 2019
Patent document filed by a Third party
Search/Exam
Apr 17, 2019
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Intention to grant (signatures)
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Apr 17, 2019
Text intended for grant (clean copy)
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Apr 17, 2019
Apr 8, 2019
Apr 5, 2019
Change to the inventor details
Search/Exam
Mar 28, 2019
(Electronic) Receipt
Search/Exam
Mar 28, 2019
Letter concerning the inventor
Search/Exam
Dec 21, 2018
(Electronic) Receipt
Search/Exam
Dec 21, 2018
Amended claims with annotations
Search/Exam
Dec 21, 2018
Claims
Search/Exam
Dec 21, 2018
Letter accompanying subsequently filed items
Search/Exam
Dec 21, 2018
Aug 16, 2018
Annex to the communication
Search/Exam
Aug 16, 2018
Communication from the Examining Division
Search/Exam
Aug 2, 2018
Examination started
Search/Exam
Mar 13, 2018
(Electronic) Receipt
Search/Exam
Mar 13, 2018
Mar 13, 2018
Amended claims with annotations
Search/Exam
Mar 13, 2018
Mar 13, 2018
Amended description with annotations
Search/Exam
Mar 13, 2018
Amendments received before examination
Search/Exam
Mar 13, 2018
Letter accompanying subsequently filed items
Search/Exam
Oct 4, 2017
Letter accompanying subsequently filed items
Search/Exam
Oct 4, 2017
Letter concerning the priority
Search/Exam
Oct 4, 2017
Non-scannable object
Search/Exam
Oct 4, 2017
US-Priority document (transmitted on CD)
Search/Exam
Sep 18, 2017
Aug 25, 2017
Invitation to file priority document
Search/Exam
Aug 17, 2017
Notification of forthcoming publication
Search/Exam
Aug 3, 2017
Aug 3, 2017
European search opinion
Search/Exam
Aug 3, 2017
European search report
Search/Exam
Aug 3, 2017
Information on Search Strategy
Search/Exam
Jul 24, 2017
Search started
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Jul 5, 2017
Jun 27, 2017
(Electronic) Receipt
Search/Exam
Jun 27, 2017
Letter concerning the priority
Search/Exam
Apr 6, 2017
Mar 31, 2017
Mar 24, 2017
Communication to designated inventor
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Mar 24, 2017
Communication to designated inventor
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Mar 24, 2017
Communication to designated inventor
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Mar 24, 2017
Communication to designated inventor
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Jan 31, 2017
Abstract
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Jan 31, 2017
Jan 31, 2017
Claims
Search/Exam
Jan 31, 2017
Description
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Jan 31, 2017
Designation of inventor
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Jan 31, 2017
Drawings
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Jan 31, 2017
Request for grant of a European patent
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