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The patent EP3134474 was granted to Ineos Styrolution Group on Oct 2, 2019. The application was filed on Apr 24, 2015 under application number EP15721152A. 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 |
|---|---|---|---|
| ELIX POLYMERS | Jun 16, 2020 | ABG LAW | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | CN102367327B |
| INTERNATIONAL-SEARCH-REPORT | US2013203909 |
| INTERNATIONAL-SEARCH-REPORT | US5162419 |
| INTERNATIONAL-SEARCH-REPORT | WO9965991 |
| OPPOSITION | US2003036586 |
| OPPOSITION | US2013158183 |
| OPPOSITION | US2013203909 |
| OPPOSITION | US4212774 |
| OPPOSITION | WO2013100336 |
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
Jul 8, 2025
Jul 8, 2025
Claims
Appeal
Jul 8, 2025
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(Electronic) Receipt
Appeal
Apr 10, 2025
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(Electronic) Receipt
Appeal
Mar 17, 2025
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(Electronic) Receipt
Appeal
Mar 3, 2025
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Feb 24, 2025
(Electronic) Receipt
Appeal
Feb 24, 2025
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Feb 14, 2025
(Electronic) Receipt
Appeal
Feb 14, 2025
Feb 14, 2025
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Jan 14, 2025
(Electronic) Receipt
Appeal
Jan 14, 2025
Authorisation
Appeal
Jan 14, 2025
Jan 14, 2025
Dec 17, 2024
Dec 12, 2024
(Electronic) Receipt
Appeal
Dec 12, 2024
Dec 12, 2024
Dec 10, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 5, 2024
Dec 4, 2024
(Electronic) Receipt
Appeal
Dec 4, 2024
(Electronic) Receipt
Appeal
Dec 4, 2024
Dec 4, 2024
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Mar 28, 2024
Mar 25, 2024
(Electronic) Receipt
Appeal
Mar 25, 2024
Mar 25, 2024
Mar 25, 2024
Mar 25, 2024
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Mar 25, 2024
Mar 25, 2024
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Mar 25, 2024
Mar 25, 2024
Reply to appeal
Appeal
Nov 30, 2023
Nov 27, 2023
(Electronic) Receipt
Appeal
Nov 27, 2023
Nov 27, 2023
Nov 27, 2023
Nov 27, 2023
Nov 27, 2023
Nov 27, 2023
Nov 27, 2023
Nov 27, 2023
Sep 26, 2023
Sep 20, 2023
(Electronic) Receipt
Appeal
Sep 20, 2023
Sep 20, 2023
Notice of appeal
Appeal
Aug 16, 2023
Jul 31, 2023
Jul 27, 2023
Jul 27, 2023
Jul 27, 2023
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Means of redress
OPPO
Jul 27, 2023
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General enquiry
OPPO
Jul 17, 2023
Apr 25, 2023
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Apr 5, 2023
Apr 5, 2023
Apr 5, 2023
Apr 5, 2023
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Authorisation
OPPO
Jul 14, 2022
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Oct 22, 2020
Oct 16, 2020
Oct 16, 2020
Oct 16, 2020
Oct 16, 2020
Oct 16, 2020
Jul 17, 2020
Jul 17, 2020
Jun 24, 2020
Jun 16, 2020
Jun 16, 2020
Authorisation
OPPO
Jun 16, 2020
Jun 16, 2020
Jun 16, 2020
Jun 16, 2020
Jun 16, 2020
Jun 16, 2020
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Oct 14, 2019
Sep 5, 2019
Decision to grant a European patent
Search/Exam
Aug 28, 2019
Change to the inventor details
Search/Exam
Aug 28, 2019
Aug 22, 2019
(Electronic) Receipt
Search/Exam
Aug 22, 2019
Annexes in respect of a client data request
Search/Exam
Aug 22, 2019
Filing of the translations of the claims
Search/Exam
Aug 22, 2019
French translation of claims
Search/Exam
Aug 22, 2019
German translation of the claims
Search/Exam
Aug 22, 2019
Letter accompanying subsequently filed items
Search/Exam
May 20, 2019
May 20, 2019
May 20, 2019
Intention to grant (signatures)
Search/Exam
May 20, 2019
Text intended for grant (clean copy)
Search/Exam
May 20, 2019
Dec 28, 2018
Submission concerning representation
Search/Exam
Dec 21, 2018
Submission concerning representation
Search/Exam
Dec 20, 2017
(Electronic) Receipt
Search/Exam
Dec 20, 2017
Amended description with annotations
Search/Exam
Dec 20, 2017
Description
Search/Exam
Dec 20, 2017
Letter accompanying subsequently filed items
Search/Exam
Dec 20, 2017
Sep 5, 2017
Annex to the communication
Search/Exam
Sep 5, 2017
Communication from the Examining Division
Search/Exam
Aug 30, 2017
Examination started
Search/Exam
Feb 1, 2017
Dec 23, 2016
Nov 30, 2016
Communication to designated inventor
Search/Exam
Nov 30, 2016
Communication to designated inventor
Search/Exam
Nov 30, 2016
Communication to designated inventor
Search/Exam
Nov 10, 2016
(Electronic) Receipt
Search/Exam
Nov 10, 2016
Request for entry into the European phase
Search/Exam
Oct 31, 2016
Oct 31, 2016
Sep 20, 2016
Sep 20, 2016
Sep 20, 2016
Notification of the recording of a change
Search/Exam
Sep 2, 2016
Information on entry into European phase
Search/Exam
Apr 5, 2016
Apr 5, 2016
Apr 5, 2016
Apr 5, 2016
Apr 5, 2016
Mar 22, 2016
Notification of election of EPO
Search/Exam
Mar 2, 2016
Feb 25, 2016
PCT demand form
PCT2
Feb 25, 2016
Feb 25, 2016
Feb 25, 2016
Feb 25, 2016
Feb 25, 2016
Nov 16, 2015
Oct 29, 2015
Copy of the international search report
Search/Exam
Oct 29, 2015
Published international application - A1
Search/Exam
Jul 13, 2015
Jul 13, 2015
Jul 13, 2015
Apr 24, 2015
(Electronic) Receipt
PCTRO
Apr 24, 2015
Abstract
PCTRO
Apr 24, 2015
Claims
PCTRO
Apr 24, 2015
Description
PCTRO
Apr 24, 2015