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The patent EP3526265 was granted to Sabic on May 19, 2021. The application was filed on Oct 16, 2017 under application number EP17783520A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| LUMMUS NOVOLEN TECHNOLOGY | Feb 21, 2022 | KRAUS & LEDERER PARTGMBB | ADMISSIBLE |
| BASELL POLIOLEFINE ITALIA | Feb 18, 2022 | LYONDELLBASELL | ADMISSIBLE |
| BOREALIS | Feb 18, 2022 | MAIWALD | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | CN101597401 |
| DESCRIPTION | US4866022 |
| DESCRIPTION | WO03059599 |
| DESCRIPTION | WO2015091839 |
| DESCRIPTION | WO9858784 |
| INTERNATIONAL-SEARCH-REPORT | EP0775722 |
| INTERNATIONAL-SEARCH-REPORT | US2008161515 |
| INTERNATIONAL-SEARCH-REPORT | WO2013041470 |
| INTERNATIONAL-SEARCH-REPORT | WO2014166779 |
| INTERNATIONAL-SEARCH-REPORT | WO2015185490 |
| OPPOSITION | EP0945472 |
| OPPOSITION | US2008161515 |
| OPPOSITION | WO2004013193 |
| OPPOSITION | WO2006125673 |
| OPPOSITION | WO2009152268 |
| OPPOSITION | WO2011080151 |
| OPPOSITION | WO2011080153 |
| OPPOSITION | WO2013041470 |
| OPPOSITION | WO2014079969 |
| OPPOSITION | WO2014079971 |
| OPPOSITION | WO2014166779 |
| OPPOSITION | WO2014195127 |
| OPPOSITION | WO2015091829 |
| OPPOSITION | WO2015091940 |
| OPPOSITION | WO2015091984 |
| OPPOSITION | WO2015185490 |
| OPPOSITION | WO2016118729 |
| OPPOSITION | WO2018059955 |
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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Advice of delivery
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Letter accompanying subsequently filed items
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Decision to grant a European patent
Search/Exam
Apr 12, 2021
(Electronic) Receipt
Search/Exam
Apr 12, 2021
French translation of claims
Search/Exam
Apr 12, 2021
German translation of the claims
Search/Exam
Apr 12, 2021
Letter accompanying subsequently filed items
Search/Exam
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Intention to grant (signatures)
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Feb 3, 2021
Text intended for grant (clean copy)
Search/Exam
Feb 3, 2021
Dec 11, 2020
Examination started
Search/Exam
Nov 22, 2019
(Electronic) Receipt
Search/Exam
Nov 22, 2019
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Amended claims with annotations
Search/Exam
Nov 22, 2019
Amendments received before examination
Search/Exam
Nov 22, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 24, 2019
May 23, 2019
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Communication to designated inventor
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May 21, 2019
Communication to designated inventor
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May 21, 2019
Communication to designated inventor
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May 21, 2019
Communication to designated inventor
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May 16, 2019
Priority search results copy provided by EPO
Search/Exam
May 13, 2019
(Electronic) Receipt
Search/Exam
May 13, 2019
Annex
Search/Exam
May 13, 2019
Request for entry into the European phase
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May 10, 2019
Feb 22, 2019
Information on entry into European phase
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May 9, 2018
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Copy of the international search report
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Apr 19, 2018
Published international application - A1
Search/Exam
Jan 22, 2018
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Oct 25, 2017
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(Electronic) Receipt
PCTRO
Oct 16, 2017
Abstract
PCTRO
Oct 16, 2017
Claims
PCTRO
Oct 16, 2017
Description
PCTRO
Oct 16, 2017
Oct 16, 2017
Drawings
PCTRO
Oct 16, 2017
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