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The patent EP2970646 was granted to Braskem America on Aug 19, 2020. The application was filed on Mar 13, 2014 under application number EP14775618A. 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 |
|---|---|---|---|
| BASELL POLIOLEFINE ITALIA | May 19, 2021 | LYONDELLBASELL | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US2011124817 |
| INTERNATIONAL-SEARCH-REPORT | US2012302701 |
| INTERNATIONAL-SEARCH-REPORT | US6015854 |
| INTERNATIONAL-SEARCH-REPORT | US7381773 |
| INTERNATIONAL-SEARCH-REPORT | US7732530 |
| INTERNATIONAL-SEARCH-REPORT | US8044135 |
| INTERNATIONAL-SEARCH-REPORT | US8076429 |
| INTERNATIONAL-SEARCH-REPORT | US8247512 |
| INTERNATIONAL-SEARCH-REPORT | WO2012085612 |
| INTERNATIONAL-SEARCH-REPORT | WO2013004804 |
| SEARCH | US2009105417 |
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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Means of redress
OPPO
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Description
OPPO
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Aug 31, 2020
Jul 23, 2020
Decision to grant a European patent
Search/Exam
Jul 8, 2020
(Electronic) Receipt
Search/Exam
Jul 8, 2020
Filing of the translations of the claims
Search/Exam
Jul 8, 2020
French translation of claims
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Jul 8, 2020
German translation of the claims
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Jul 8, 2020
Letter accompanying subsequently filed items
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Mar 3, 2020
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Intention to grant (signatures)
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Mar 3, 2020
Text intended for grant (clean copy)
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Mar 3, 2020
Dec 19, 2018
(Electronic) Receipt
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Dec 19, 2018
Amended description with annotations
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Dec 19, 2018
Description
Search/Exam
Dec 19, 2018
Letter accompanying subsequently filed items
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Dec 19, 2018
Sep 3, 2018
Annex to the communication
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Sep 3, 2018
Communication from the Examining Division
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Feb 28, 2018
(Electronic) Receipt
Search/Exam
Feb 28, 2018
Amended claims with annotations
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Feb 28, 2018
Claims
Search/Exam
Feb 28, 2018
Letter accompanying subsequently filed items
Search/Exam
Feb 28, 2018
Oct 25, 2017
Annex to the communication
Search/Exam
Oct 25, 2017
Communication from the Examining Division
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Oct 9, 2017
(Electronic) Receipt
Search/Exam
Oct 9, 2017
Amended claims with annotations
Search/Exam
Oct 9, 2017
Claims
Search/Exam
Oct 9, 2017
Letter accompanying subsequently filed items
Search/Exam
Oct 9, 2017
Jun 16, 2017
Annex to the communication
Search/Exam
Jun 16, 2017
Communication from the Examining Division
Search/Exam
Jun 9, 2017
Examination started
Search/Exam
Jan 16, 2017
(Electronic) Receipt
Search/Exam
Jan 16, 2017
Jan 16, 2017
Amended claims with annotations
Search/Exam
Jan 16, 2017
Amendments received before examination
Search/Exam
Jan 16, 2017
Letter accompanying subsequently filed items
Search/Exam
Jul 12, 2016
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Jul 1, 2016
Jun 23, 2016
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European search opinion
Search/Exam
Jun 23, 2016
Information on Search Strategy
Search/Exam
Jun 23, 2016
Supplementary European search report
Search/Exam
Jun 13, 2016
Search started
Search/Exam
May 4, 2016
Apr 25, 2016
(Electronic) Receipt
Search/Exam
Apr 25, 2016
Apr 25, 2016
Amended claims with annotations
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Apr 25, 2016
Amendments received before examination
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Apr 25, 2016
Letter accompanying subsequently filed items
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Apr 20, 2016
Communication to designated inventor
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Apr 13, 2016
(Electronic) Receipt
Search/Exam
Apr 13, 2016
Letter accompanying subsequently filed items
Search/Exam
Apr 13, 2016
Letter concerning the inventor
Search/Exam
Dec 23, 2015
Dec 22, 2015
Dec 15, 2015
Letter which had not been notified
Search/Exam
Oct 22, 2015
Oct 20, 2015
Communication to designated inventor
Search/Exam
Oct 20, 2015
Communication to designated inventor
Search/Exam
Oct 20, 2015
Communication to designated inventor
Search/Exam
Oct 20, 2015
Communication to designated inventor
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Oct 20, 2015
Communication to designated inventor
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Oct 20, 2015
Communication to designated inventor
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Oct 2, 2015
Sep 21, 2015
(Electronic) Receipt
Search/Exam
Sep 21, 2015
Request for entry into the European phase
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Aug 7, 2015
Information on entry into European phase
Search/Exam
Oct 22, 2014
Oct 2, 2014
Copy of the international search report
Search/Exam
Oct 2, 2014
Published international application - A1
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