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The patent EP2726517 was granted to DOW on Jun 3, 2020. The application was filed on Jun 14, 2012 under application number EP12730329A. 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 |
|---|---|---|---|
| INEOS EUROPE | Mar 3, 2021 | KING | - |
| LUMMUS NOVOLEN TECHNOLOGY | Mar 3, 2021 | LEDERER & KELLER PATENTANWALTE PARTNERSCHAFT MBB | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | CN101241023 |
| DESCRIPTION | US2005137364 |
| DESCRIPTION | US3639377 |
| DESCRIPTION | US4101289 |
| DESCRIPTION | US4543399 |
| DESCRIPTION | US4588790 |
| DESCRIPTION | US4994534 |
| DESCRIPTION | US5352749 |
| DESCRIPTION | US5436304 |
| DESCRIPTION | US5462999 |
| DESCRIPTION | US6460412 |
| DESCRIPTION | US6489408 |
| INTERNATIONAL-SEARCH-REPORT | US2011152424 |
| INTERNATIONAL-SEARCH-REPORT | WO2005030815 |
| INTERNATIONAL-SEARCH-REPORT | WO2009029487 |
| OPPOSITION | EP0498603 |
| OPPOSITION | US2011152424 |
| OPPOSITION | US3652527 |
| OPPOSITION | US4535134 |
| OPPOSITION | US6350054 |
| OPPOSITION | US7420021 |
| OPPOSITION | US7459506 |
| OPPOSITION | WO2005030815 |
| OPPOSITION | WO2009029487 |
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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Description
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Jun 15, 2020
May 8, 2020
Decision to grant a European patent
Search/Exam
Apr 20, 2020
(Electronic) Receipt
Search/Exam
Apr 20, 2020
Filing of the translations of the claims
Search/Exam
Apr 20, 2020
French translation of claims
Search/Exam
Apr 20, 2020
German translation of the claims
Search/Exam
Apr 20, 2020
Letter accompanying subsequently filed items
Search/Exam
Mar 10, 2020
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Intention to grant (signatures)
Search/Exam
Mar 10, 2020
Text intended for grant (clean copy)
Search/Exam
Mar 10, 2020
Feb 13, 2020
(Electronic) Receipt
Search/Exam
Feb 13, 2020
Amended claims with annotations
Search/Exam
Feb 13, 2020
Claims
Search/Exam
Feb 13, 2020
Letter accompanying subsequently filed items
Search/Exam
Feb 13, 2020
Jan 28, 2020
Dec 17, 2019
(Electronic) Receipt
Search/Exam
Dec 17, 2019
Letter accompanying subsequently filed items
Search/Exam
Dec 17, 2019
Request for correction of client data
Search/Exam
Dec 13, 2019
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Intention to grant (signatures)
Search/Exam
Dec 13, 2019
Text intended for grant (clean copy)
Search/Exam
Dec 13, 2019
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Dec 13, 2017
(Electronic) Receipt
Search/Exam
Dec 13, 2017
Amended claims with annotations
Search/Exam
Dec 13, 2017
Claims
Search/Exam
Dec 13, 2017
Letter accompanying subsequently filed items
Search/Exam
Dec 13, 2017
Oct 24, 2017
Oct 19, 2017
(Electronic) Receipt
Search/Exam
Oct 19, 2017
Letter accompanying subsequently filed items
Search/Exam
Oct 19, 2017
Jun 20, 2017
Annex to the communication
Search/Exam
Jun 20, 2017
Communication from the Examining Division
Search/Exam
Jun 12, 2017
Jun 7, 2017
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May 25, 2016
(Electronic) Receipt
Search/Exam
May 25, 2016
Amended claims with annotations
Search/Exam
May 25, 2016
Claims
Search/Exam
May 25, 2016
Letter accompanying subsequently filed items
Search/Exam
May 25, 2016
Mar 23, 2016
Mar 18, 2016
(Electronic) Receipt
Search/Exam
Mar 18, 2016
Letter accompanying subsequently filed items
Search/Exam
Mar 18, 2016
Nov 20, 2015
Annex to the communication
Search/Exam
Nov 20, 2015
Communication from the Examining Division
Search/Exam
Nov 13, 2015
Examination started
Search/Exam
Sep 5, 2014
(Electronic) Receipt
Search/Exam
Sep 5, 2014
Sep 5, 2014
Amended claims with annotations
Search/Exam
Sep 5, 2014
Amendments received before examination
Search/Exam
Sep 5, 2014
Letter accompanying subsequently filed items
Search/Exam
Apr 23, 2014
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Mar 17, 2014
(Electronic) Receipt
Search/Exam
Mar 17, 2014
Annexes in respect of a client data request
Search/Exam
Mar 17, 2014
Letter accompanying subsequently filed items
Search/Exam
Mar 17, 2014
Mar 7, 2014
Feb 28, 2014
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Communication to designated inventor
Search/Exam
Feb 4, 2014
Communication to designated inventor
Search/Exam
Feb 4, 2014
Communication to designated inventor
Search/Exam
Feb 4, 2014
Communication to designated inventor
Search/Exam
Feb 4, 2014
Communication to designated inventor
Search/Exam
Feb 4, 2014
Communication to designated inventor
Search/Exam
Jan 21, 2014
Nov 28, 2013
(Electronic) Receipt
Search/Exam
Nov 28, 2013
Request for entry into the European phase
Search/Exam
Nov 8, 2013
Information on entry into European phase
Search/Exam
Jan 23, 2013
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Copy of the international search report
Search/Exam
Jan 3, 2013
Published international application - A1
Search/Exam
Sep 18, 2012
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Jun 27, 2012
Abstract
PCTISA
Jun 27, 2012
Claims
PCTISA
Jun 27, 2012
Description
PCTISA