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The patent EP3424984 was granted to Zeon on Apr 19, 2023. The application was filed on Feb 16, 2017 under application number EP17759670A. 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 |
|---|---|---|---|
| CARIFLEX PTE | Jan 17, 2024 | EP&C | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2009531497 |
| DESCRIPTION | JPS55142635 |
| INTERNATIONAL-SEARCH-REPORT | JP2009179680 |
| INTERNATIONAL-SEARCH-REPORT | JP2009533501 |
| INTERNATIONAL-SEARCH-REPORT | JPH08505426 |
| INTERNATIONAL-SEARCH-REPORT | JPS56109268 |
| INTERNATIONAL-SEARCH-REPORT | US3285869 |
| INTERNATIONAL-SEARCH-REPORT | WO2013099501 |
| INTERNATIONAL-SEARCH-REPORT | WO2014157034 |
| OPPOSITION | EP2799483 |
| OPPOSITION | GB813198 |
| OPPOSITION | GB893066 |
| OPPOSITION | GB957967 |
| OPPOSITION | US2913444 |
| OPPOSITION | US3215649 |
| OPPOSITION | US3261792 |
| OPPOSITION | US3285869 |
| OPPOSITION | WO2008074513 |
| OTHER | EP2799483 |
| OTHER | GB1016235 |
| OTHER | GB1016236 |
| OTHER | GB813198 |
| OTHER | GB893066 |
| OTHER | GB957967 |
| OTHER | JP2016037079 |
| OTHER | US2015087761 |
| OTHER | US2913444 |
| OTHER | US3161792 |
| OTHER | US3215649 |
| OTHER | US3261792 |
| OTHER | US3285869 |
| OTHER | WO2008074513 |
| OTHER | WO2013099501 |
| SEARCH | US1282406 |
| SEARCH | US3809662 |
| SEARCH | WO2014181714 |
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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Feb 11, 2025
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Dec 18, 2023
May 4, 2023
Mar 23, 2023
Decision to grant a European patent
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Jan 18, 2023
Jan 18, 2023
Dec 30, 2022
(Electronic) Receipt
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Dec 30, 2022
Filing of the translations of the claims
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Dec 30, 2022
French translation of claims
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Dec 30, 2022
German translation of the claims
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Dec 30, 2022
Letter accompanying subsequently filed items
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Oct 6, 2022
Oct 6, 2022
Oct 6, 2022
Intention to grant (signatures)
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Oct 6, 2022
Text intended for grant (clean copy)
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Oct 6, 2022
Jun 23, 2022
Jun 23, 2022
Jun 10, 2022
(Electronic) Receipt
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Jun 10, 2022
Letter accompanying subsequently filed items
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Jun 10, 2022
Observations by third parties
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Mar 25, 2022
Amended description with annotations
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Mar 25, 2022
Description
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Mar 25, 2022
Feb 3, 2022
Jan 27, 2022
Letter which had not been notified
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Jan 26, 2022
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Jan 18, 2022
(Electronic) Receipt
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Jan 18, 2022
Letter accompanying subsequently filed items
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Jan 18, 2022
Non-patent literature filed by a third party
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Jan 18, 2022
Non-patent literature filed by a third party
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Jan 18, 2022
Non-patent literature filed by a third party
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Non-patent literature filed by a third party
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Non-patent literature filed by a third party
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Non-patent literature filed by a third party
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Non-patent literature filed by a third party
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Non-patent literature filed by a third party
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Non-patent literature filed by a third party
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Jan 18, 2022
Non-patent literature filed by a third party
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Jan 18, 2022
Non-patent literature filed by a third party
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Jan 18, 2022
Observations by third parties
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Jan 18, 2022
Patent document filed by a Third party
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Jan 18, 2022
Patent document filed by a Third party
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Jan 18, 2022
Patent document filed by a Third party
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Jan 3, 2022
Annex to the communication
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Jan 3, 2022
Communication from the Examining Division
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Nov 26, 2021
Nov 26, 2021
Nov 18, 2021
(Electronic) Receipt
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Nov 18, 2021
Citation filed by a third party
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Nov 18, 2021
Letter accompanying subsequently filed items
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Nov 18, 2021
Observations by third parties
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Sep 22, 2021
Sep 22, 2021
Sep 16, 2021
(Electronic) Receipt
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Sep 16, 2021
Letter accompanying subsequently filed items
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Sep 16, 2021
Observations by third parties
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Sep 10, 2021
Amended description with annotations
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Sep 10, 2021
Description
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Sep 10, 2021
Aug 25, 2021
Aug 18, 2021
Aug 4, 2021
(Electronic) Receipt
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Aug 4, 2021
Letter accompanying subsequently filed items
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Aug 4, 2021
Non-patent literature filed by a third party
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Aug 4, 2021
Observations by third parties
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Aug 4, 2021
Patent document filed by a Third party
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Aug 4, 2021
Patent document filed by a Third party
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Aug 4, 2021
Patent document filed by a Third party
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Aug 4, 2021
Patent document filed by a Third party
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Jul 16, 2021
Annex to the communication
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Jul 16, 2021
Communication from the Examining Division
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Apr 12, 2021
Amended claims with annotations
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Apr 12, 2021
Claims
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Apr 12, 2021
Jan 13, 2021
Annex to the communication
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Jan 13, 2021
Communication from the Examining Division
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Dec 23, 2020
Examination started
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Apr 22, 2020
Apr 22, 2020
Amended claims with annotations
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Apr 22, 2020
Amendments received before examination
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Nov 6, 2019
Oct 18, 2019
Oct 18, 2019
Oct 18, 2019
European search opinion
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Oct 18, 2019
Information on Search Strategy
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Oct 18, 2019
Supplementary European search report
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Sep 5, 2019
Search started
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Dec 12, 2018
Notification of forthcoming publication
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Oct 8, 2018
Oct 8, 2018
Communication to designated inventor
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Oct 8, 2018
Communication to designated inventor
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Oct 8, 2018
Communication to designated inventor
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Sep 19, 2018
Sep 19, 2018
Aug 17, 2018
(Electronic) Receipt
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Aug 17, 2018
Abstract
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Aug 17, 2018
Claims
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Aug 17, 2018
Description
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Aug 17, 2018
Request for entry into the European phase
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Jul 13, 2018
Information on entry into European phase
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Sep 25, 2017
Sep 8, 2017
Copy of the international search report
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Sep 8, 2017
Sep 8, 2017
International publication pamphlet
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