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The patent EP2239291 was granted to Bayer Materialscience on Mar 9, 2022. The application was filed on Jul 19, 2007 under application number EP10007054A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 |
|---|---|---|---|
| ECONIC | Nov 27, 2019 | APPLEYARD LEES | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US3404109 |
| DESCRIPTION | US3538043 |
| DESCRIPTION | US4500704 |
| DESCRIPTION | US4826953 |
| DESCRIPTION | US5145883 |
| DESCRIPTION | US5482908 |
| DESCRIPTION | US5777177 |
| DESCRIPTION | US5783513 |
| DESCRIPTION | US6713599 |
| DESCRIPTION | US6762278 |
| OPPOSITION | US2001046940 |
| OPPOSITION | US4826953 |
| OPPOSITION | US5482908 |
| OPPOSITION | US5712216 |
| OPPOSITION | US5777177 |
| OPPOSITION | US5783513 |
| OPPOSITION | US6762278 |
| OPPOSITION | WO2004087788 |
| OPPOSITION | WO2006103213 |
| OTHER | US5482908 |
| OTHER | US5783513 |
| OTHER | WO9916775 |
| SEARCH | US4500704 |
| SEARCH | US4826953 |
| SEARCH | US6713599 |
| SEARCH | WO03029240 |
| SEARCH | WO2006103214 |
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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Feb 10, 2022
Feb 10, 2022
Feb 7, 2022
Jan 31, 2022
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Dec 14, 2021
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Refund of fees
Search/Exam
Dec 10, 2021
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Dec 8, 2021
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Dec 3, 2021
Nov 30, 2021
(Electronic) Receipt
Appeal
Nov 30, 2021
Nov 30, 2021
Withdrawal of an appeal
Appeal
Oct 4, 2021
Oct 4, 2021
Sep 27, 2021
(Electronic) Receipt
Appeal
Sep 27, 2021
(Electronic) Receipt
Appeal
Sep 27, 2021
Advice of delivery
Appeal
Sep 27, 2021
Sep 27, 2021
Notice of appeal
Appeal
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Mar 11, 2019
Jan 31, 2019
Decision to grant a European patent
Search/Exam
Jan 10, 2019
(Electronic) Receipt
Search/Exam
Jan 10, 2019
Filing of the translations of the claims
Search/Exam
Jan 10, 2019
French translation of claims
Search/Exam
Jan 10, 2019
German translation of the claims
Search/Exam
Oct 30, 2018
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Oct 30, 2018
Intention to grant (signatures)
Search/Exam
Oct 30, 2018
Text intended for grant (clean copy)
Search/Exam
Oct 30, 2018
Sep 7, 2018
(Electronic) Receipt
Search/Exam
Sep 7, 2018
Amended claims with annotations
Search/Exam
Sep 7, 2018
Amended claims with annotations
Search/Exam
Sep 7, 2018
Claims
Search/Exam
Sep 7, 2018
Claims
Search/Exam
Sep 7, 2018
Description
Search/Exam
Sep 7, 2018
Description
Search/Exam
Sep 7, 2018
Letter accompanying subsequently filed items
Search/Exam
Sep 7, 2018
Jul 5, 2018
Jun 28, 2018
(Electronic) Receipt
Search/Exam
Jun 28, 2018
Mar 1, 2018
Annex to the communication
Search/Exam
Mar 1, 2018
Communication from the Examining Division
Search/Exam
Oct 10, 2016
Submission concerning representation
Search/Exam
Sep 25, 2015
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Sep 17, 2015
Sep 11, 2015
Aug 27, 2015
Aug 25, 2015
(Electronic) Receipt
Search/Exam
Aug 25, 2015
Letter accompanying subsequently filed items
Search/Exam
Aug 25, 2015
Aug 17, 2015
May 13, 2015
Annex to the communication
Search/Exam
May 13, 2015
Communication from the Examining Division
Search/Exam
May 6, 2015
Examination started
Search/Exam
Jan 12, 2015
Dec 18, 2014
Observations by third parties
Search/Exam
Apr 9, 2013
Apr 13, 2011
Apr 13, 2011
Amendments received before examination
Search/Exam
Apr 13, 2011
Apr 13, 2011
Apr 11, 2011
Apr 11, 2011
Amendments received before examination
Search/Exam
Oct 18, 2010
Sep 15, 2010
Notification of forthcoming publication
Search/Exam
Sep 8, 2010
Sep 8, 2010
European search opinion
Search/Exam
Sep 8, 2010
European search report
Search/Exam
Jul 20, 2010
Jul 8, 2010
Abstract
Search/Exam
Jul 8, 2010
Claims
Search/Exam
Jul 8, 2010
Description
Search/Exam
Jul 8, 2010
Designation of inventor
Search/Exam
Jul 8, 2010
Feb 25, 2008