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The patent EP2976505 was granted to Onesubsea UK on Jun 18, 2025. The application was filed on Mar 18, 2014 under application number EP14768808A. 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 |
|---|---|---|---|
| SULZER MANAGEMENT | May 10, 2022 | IPS IRSCH | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0570455 |
| INTERNATIONAL-SEARCH-REPORT | DE1528717 |
| INTERNATIONAL-SEARCH-REPORT | US2010284829 |
| INTERNATIONAL-SEARCH-REPORT | US2012183388 |
| INTERNATIONAL-SEARCH-REPORT | US2012321438 |
| INTERNATIONAL-SEARCH-REPORT | WO2009135802 |
| OPPOSITION | EP0570455 |
| OPPOSITION | JPH0559901 |
| OPPOSITION | US815281 |
| OPPOSITION | WO2009135802 |
| OPPOSITION | WO2009137319 |
| OPPOSITION | WO2010129749 |
| OPPOSITION | WO2011078680 |
| OPPOSITION | WO2012121605 |
| SEARCH | EP0570455 |
| SEARCH | WO2009135802 |
| SEARCH | WO2011078680 |
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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May 22, 2025
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Description
OPPO
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Refund of fees
OPPO
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Aug 24, 2021
Jul 15, 2021
Decision to grant a European patent
Search/Exam
Jul 2, 2021
(Electronic) Receipt
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Jul 2, 2021
French translation of claims
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Jul 2, 2021
German translation of the claims
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Jul 2, 2021
Letter accompanying subsequently filed items
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Mar 10, 2021
Mar 10, 2021
Mar 10, 2021
Text intended for grant (clean copy)
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Mar 10, 2021
Mar 9, 2021
Intention to grant (signatures)
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Feb 17, 2021
Examination started
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Sep 10, 2018
Letter concerning fees and payments
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Jul 4, 2018
Submission concerning representation
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Jun 12, 2018
Submission concerning representation
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Nov 28, 2017
Nov 20, 2017
Annexes in respect of a client data request
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Nov 20, 2017
Nov 16, 2017
Nov 2, 2017
General authorisation
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Nov 2, 2017
Oct 20, 2017
(Electronic) Receipt
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Oct 20, 2017
Oct 20, 2017
Amended claims with annotations
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Oct 20, 2017
Oct 20, 2017
Amended description with annotations
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Oct 20, 2017
Amendments received before examination
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Oct 20, 2017
Letter accompanying subsequently filed items
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Apr 11, 2017
Mar 24, 2017
Mar 24, 2017
European search opinion
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Mar 24, 2017
Information on Search Strategy
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Mar 24, 2017
Supplementary European search report
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Dec 1, 2016
Final instructions (loss of partial rights)
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Aug 1, 2016
Claim deemed abandoned
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Feb 4, 2016
Feb 3, 2016
Communication to designated inventor
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Jan 30, 2016
Jan 25, 2016
(Electronic) Receipt
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Jan 25, 2016
Letter accompanying subsequently filed items
Search/Exam
Jan 7, 2016
Jan 4, 2016
Dec 16, 2015
Letter which had not been notified
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Dec 1, 2015
Nov 27, 2015
Communication to designated inventor
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Nov 27, 2015
Communication to designated inventor
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Oct 16, 2015
(Electronic) Receipt
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Oct 16, 2015
Request for entry into the European phase
Search/Exam
Oct 6, 2015
Jul 29, 2015
Information on entry into European phase
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Feb 12, 2015
Notification of the recording of a change
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Oct 14, 2014
Sep 25, 2014
Copy of the international search report
Search/Exam
Sep 25, 2014
Published international application - A1
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