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The patent EP2057235 was granted to Huntsman P&A Germany on May 2, 2018. The application was filed on Aug 27, 2007 under application number EP07802929A. 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 |
|---|---|---|---|
| KRONOS | Jan 30, 2019 | HOFFMANN EITLE | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | DE3347191 |
| INTERNATIONAL-SEARCH-REPORT | DE4431735 |
| INTERNATIONAL-SEARCH-REPORT | EP0587105 |
| INTERNATIONAL-SEARCH-REPORT | EP1544256 |
| INTERNATIONAL-SEARCH-REPORT | GB2242420 |
| OPPOSITION | DE102007005186 |
| OPPOSITION | DE3347191 |
| OPPOSITION | DE4431735 |
| OPPOSITION | DE69707461T |
| OPPOSITION | EP0587105 |
| OPPOSITION | EP1544256 |
| OPPOSITION | US2006173112 |
| OPPOSITION | US2006264552 |
| OPPOSITION | WO2008092590 |
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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Sep 11, 2020
Sep 11, 2020
Sep 8, 2020
Jun 10, 2020
Jun 3, 2020
May 28, 2020
May 28, 2020
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May 28, 2020
Means of redress
OPPO
May 28, 2020
May 28, 2020
Feb 10, 2020
Feb 4, 2020
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Jan 31, 2020
Jan 27, 2020
Jan 14, 2020
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Jan 8, 2020
Jan 8, 2020
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Feb 22, 2019
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Feb 5, 2019
Jan 30, 2019
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Jan 30, 2019
Jan 30, 2019
Jan 30, 2019
Jan 30, 2019
Jan 30, 2019
Jan 30, 2019
Jan 30, 2019
Jan 30, 2019
Jan 30, 2019
Jun 11, 2018
May 16, 2018
(Electronic) Receipt
Search/Exam
May 16, 2018
Annexes in respect of a client data request
Search/Exam
May 16, 2018
Letter accompanying subsequently filed items
Search/Exam
May 16, 2018
May 14, 2018
May 2, 2018
Apr 23, 2018
(Electronic) Receipt
Search/Exam
Apr 23, 2018
Annexes in respect of a client data request
Search/Exam
Apr 23, 2018
Letter accompanying subsequently filed items
Search/Exam
Apr 23, 2018
Apr 6, 2018
Decision to grant a European patent
Search/Exam
Mar 23, 2018
Mar 23, 2018
Mar 23, 2018
Intention to grant (signatures)
Search/Exam
Mar 23, 2018
Text intended for grant (clean copy)
Search/Exam
Mar 23, 2018
Feb 19, 2018
Feb 15, 2018
(Electronic) Receipt
Search/Exam
Feb 15, 2018
Amended claims with annotations
Search/Exam
Feb 15, 2018
Amended description with annotations
Search/Exam
Feb 15, 2018
Claims
Search/Exam
Feb 15, 2018
Description
Search/Exam
Feb 15, 2018
English translation of the claims
Search/Exam
Feb 15, 2018
French translation of claims
Search/Exam
Feb 15, 2018
Letter accompanying subsequently filed items
Search/Exam
Feb 15, 2018
Feb 15, 2018
Oct 11, 2017
Oct 11, 2017
Oct 11, 2017
Intention to grant (signatures)
Search/Exam
Oct 11, 2017
Text intended for grant (clean copy)
Search/Exam
Oct 11, 2017
May 29, 2017
(Electronic) Receipt
Search/Exam
May 29, 2017
Amended claims with annotations
Search/Exam
May 29, 2017
Amended description with annotations
Search/Exam
May 29, 2017
Claims
Search/Exam
May 29, 2017
Description
Search/Exam
May 29, 2017
Letter accompanying subsequently filed items
Search/Exam
May 29, 2017
Apr 10, 2017
Annex to the communication
Search/Exam
Apr 10, 2017
Communication from the Examining Division
Search/Exam
Dec 28, 2016
(Electronic) Receipt
Search/Exam
Dec 28, 2016
Amended claims with annotations
Search/Exam
Dec 28, 2016
Amended description with annotations
Search/Exam
Dec 28, 2016
Claims
Search/Exam
Dec 28, 2016
Description
Search/Exam
Dec 28, 2016
Letter accompanying subsequently filed items
Search/Exam
Dec 28, 2016
Sep 13, 2016
Annex to the communication
Search/Exam
Sep 13, 2016
Communication from the Examining Division
Search/Exam
Feb 10, 2016
Submission concerning representation
Search/Exam
Feb 8, 2016
Submission concerning representation
Search/Exam
Feb 5, 2015
Feb 5, 2015
Feb 3, 2015
Feb 2, 2015
Jan 29, 2015
Nov 4, 2014
Communication to designated inventor
Search/Exam
Oct 30, 2014
Letter concerning the inventor
Search/Exam
Oct 29, 2014
Letter concerning the inventor
Search/Exam
Oct 15, 2012
Oct 10, 2012
Mar 13, 2012
Decision to allow further processing
Search/Exam
Feb 29, 2012
Claims
Search/Exam
Feb 29, 2012
Feb 28, 2012
Jan 3, 2012
Sep 26, 2011
Sep 22, 2011
Sep 21, 2011
May 17, 2011
Annex to the communication
Search/Exam
May 17, 2011
Communication from the Examining Division
Search/Exam
Nov 4, 2009
Oct 29, 2009
Oct 28, 2009
May 7, 2009
Apr 24, 2009
Letter which had not been notified
Search/Exam
Apr 16, 2009
Apr 15, 2009
Mar 20, 2009
Request for entry into the European phase
Search/Exam
Mar 18, 2009
Letter accompanying subsequently filed items
Search/Exam
Mar 18, 2009
Request for entry into the European phase
Search/Exam
Mar 16, 2009
Jan 7, 2009
Information on entry into European phase
Search/Exam
Mar 18, 2008
Feb 28, 2008
Copy of the international search report
Search/Exam
Feb 28, 2008
Copy of the international search report
Search/Exam
Feb 28, 2008
Published international application - A1
Search/Exam
Aug 27, 2007
Abstract
PCTRO
Aug 27, 2007
Claims
PCTRO
Aug 27, 2007
Description
PCTRO
Aug 27, 2007