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The patent EP3728460 was granted to Sabic on Feb 7, 2024. The application was filed on Dec 18, 2018 under application number EP18816156A. 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 |
|---|---|---|---|
| BASELL POLIOLEFINE ITALIA | Nov 7, 2024 | LYONDELLBASELL | ADMISSIBLE |
| INEOS EUROPE | Nov 5, 2024 | MATHISEN & MACARA | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US4866022 |
| DESCRIPTION | WO2010037747 |
| EXAMINATION | WO2010037747 |
| INTERNATIONAL-SEARCH-REPORT | EP3127945 |
| INTERNATIONAL-SEARCH-REPORT | JP2004002655 |
| INTERNATIONAL-SEARCH-REPORT | US2016046737 |
| INTERNATIONAL-SEARCH-REPORT | US6723795 |
| OPPOSITION | EP0942013 |
| OPPOSITION | EP3728459 |
| OPPOSITION | JP2003048996 |
| OPPOSITION | US2016046737 |
| OPPOSITION | US6350828 |
| OPPOSITION | WO2010037747 |
| OPPOSITION | WO2014152692 |
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.
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Decision to grant a European patent
Search/Exam
Dec 30, 2023
(Electronic) Receipt
Search/Exam
Dec 30, 2023
Filing of the translations of the claims
Search/Exam
Dec 30, 2023
French translation of claims
Search/Exam
Dec 30, 2023
German translation of the claims
Search/Exam
Aug 30, 2023
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Intention to grant (signatures)
Search/Exam
Aug 30, 2023
Text intended for grant (clean copy)
Search/Exam
Aug 30, 2023
Jun 16, 2023
Examination started
Search/Exam
Jul 5, 2021
Decision to allow further processing
Search/Exam
Apr 23, 2021
Decision to allow further processing
Search/Exam
Apr 12, 2021
(Electronic) Receipt
Search/Exam
Apr 12, 2021
Letter accompanying subsequently filed items
Search/Exam
Apr 12, 2021
Request for further processing
Search/Exam
Mar 11, 2021
Sep 30, 2020
Aug 6, 2020
Jul 30, 2020
Priority search results copy provided by EPO
Search/Exam
Jul 27, 2020
Communication to designated inventor
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Jul 27, 2020
Communication to designated inventor
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Communication to designated inventor
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Jul 27, 2020
Communication to designated inventor
Search/Exam
Jul 17, 2020
(Electronic) Receipt
Search/Exam
Jul 17, 2020
Request for entry into the European phase
Search/Exam
Jul 6, 2020
May 4, 2020
Information on entry into European phase
Search/Exam
Jul 18, 2019
Jun 27, 2019
Copy of the international search report
Search/Exam
Jun 27, 2019
Published international application - A1
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Dec 18, 2018
(Electronic) Receipt
PCTRO
Dec 18, 2018
Abstract
PCTRO
Dec 18, 2018
Claims
PCTRO
Dec 18, 2018
Description
PCTRO
Dec 18, 2018
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