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The patent EP2681260 was granted to DOW on May 31, 2023. The application was filed on Mar 2, 2011 under application number EP11708634A. 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 |
|---|---|---|---|
| PPG INDUSTRIES | Jan 19, 2018 | APPLEYARD LEES | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | JPH08295791 |
| INTERNATIONAL-SEARCH-REPORT | DE102006059680 |
| INTERNATIONAL-SEARCH-REPORT | EP1193282 |
| INTERNATIONAL-SEARCH-REPORT | EP1245603 |
| INTERNATIONAL-SEARCH-REPORT | US2010143837 |
| INTERNATIONAL-SEARCH-REPORT | US5356989 |
| OPPOSITION | JP3577778B |
| OPPOSITION | JP3577778 |
| OPPOSITION | JPH107944 |
| OPPOSITION | US2007142570 |
| OPPOSITION | US2010143837 |
| OPPOSITION | US5356989 |
| OPPOSITION | US5869567 |
| OPPOSITION | WO0128306 |
| OPPOSITION | WO2007030334 |
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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May 8, 2023
May 8, 2023
Apr 28, 2023
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Means of redress
OPPO
Nov 11, 2022
Nov 11, 2022
May 17, 2022
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Oct 20, 2021
Advice of delivery
Appeal
Oct 18, 2021
Oct 18, 2021
Oct 18, 2021
Aug 2, 2021
Aug 2, 2021
Aug 2, 2021
Jun 24, 2021
Jun 22, 2021
Jun 18, 2021
(Electronic) Receipt
Appeal
Jun 18, 2021
Jun 18, 2021
Jun 18, 2021
Jun 18, 2021
Jun 18, 2021
Jun 18, 2021
Jun 17, 2021
(Electronic) Receipt
Appeal
Jun 17, 2021
Jun 17, 2021
Jun 16, 2021
Jun 16, 2021
Jun 2, 2021
May 27, 2021
(Electronic) Receipt
Appeal
May 27, 2021
Apr 30, 2021
Apr 30, 2021
Apr 30, 2021
Apr 30, 2021
Apr 1, 2021
Jan 6, 2021
(Electronic) Receipt
Appeal
Jan 6, 2021
Advice of delivery
Appeal
Jan 6, 2021
Dec 29, 2020
Advice of delivery
Appeal
Dec 18, 2020
Dec 18, 2020
Dec 15, 2020
Dec 15, 2020
Dec 6, 2019
Nov 29, 2019
(Electronic) Receipt
Appeal
Nov 29, 2019
Nov 29, 2019
Reply to appeal
Appeal
Nov 28, 2019
Nov 22, 2019
(Electronic) Receipt
Appeal
Nov 22, 2019
Claims
Appeal
Nov 22, 2019
Claims
Appeal
Nov 22, 2019
Nov 22, 2019
Reply to appeal
Appeal
Oct 21, 2019
Jul 22, 2019
Jul 22, 2019
Jul 16, 2019
(Electronic) Receipt
Appeal
Jul 16, 2019
(Electronic) Receipt
Appeal
Jul 16, 2019
Claims
Appeal
Jul 16, 2019
Claims
Appeal
Jul 16, 2019
Claims
Appeal
Jul 16, 2019
Jul 16, 2019
Jul 16, 2019
Jul 16, 2019
Jul 16, 2019
May 27, 2019
May 27, 2019
May 20, 2019
Processing of an appeal
Appeal
May 16, 2019
(Electronic) Receipt
Appeal
May 16, 2019
(Electronic) Receipt
Appeal
May 16, 2019
May 16, 2019
May 16, 2019
Notice of appeal
Appeal
May 16, 2019
Notice of appeal
Appeal
Mar 18, 2019
Mar 18, 2019
Mar 18, 2019
Mar 11, 2019
Mar 11, 2019
Mar 6, 2019
Mar 6, 2019
Mar 6, 2019
Mar 6, 2019
Mar 6, 2019
Mar 6, 2019
Mar 6, 2019
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Means of redress
OPPO
Mar 6, 2019
Mar 6, 2019
Mar 6, 2019
Mar 6, 2019
Mar 6, 2019
Mar 6, 2019
Feb 6, 2019
Dec 14, 2018
Dec 14, 2018
Dec 6, 2018
Dec 6, 2018
Dec 6, 2018
Claims
OPPO
Dec 6, 2018
Claims
OPPO
Dec 6, 2018
Claims
OPPO
Dec 6, 2018
Claims
OPPO
Dec 6, 2018
Claims
OPPO
Dec 6, 2018
Dec 6, 2018
Dec 6, 2018
Dec 6, 2018
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Jul 18, 2018
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Jun 14, 2018
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Claims
OPPO
Jun 8, 2018
Claims
OPPO
Jun 8, 2018
Jun 8, 2018
Feb 2, 2018
Jan 31, 2018
Jan 30, 2018
Jan 19, 2018
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Apr 20, 2017
Mar 23, 2017
Decision to grant a European patent
Search/Exam
Feb 14, 2017
(Electronic) Receipt
Search/Exam
Feb 14, 2017
Filing of the translations of the claims
Search/Exam
Feb 14, 2017
French translation of claims
Search/Exam
Feb 14, 2017
German translation of the claims
Search/Exam
Feb 14, 2017
Letter accompanying subsequently filed items
Search/Exam
Oct 4, 2016
Oct 4, 2016
Oct 4, 2016
Intention to grant (signatures)
Search/Exam
Oct 4, 2016
Text intended for grant
Search/Exam
Jun 22, 2016
(Electronic) Receipt
Search/Exam
Jun 22, 2016
Amended description with annotations
Search/Exam
Jun 22, 2016
Description
Search/Exam
Jun 22, 2016
Letter accompanying subsequently filed items
Search/Exam
Jun 22, 2016
Feb 29, 2016
Annex to the communication
Search/Exam
Feb 29, 2016
Communication from the Examining Division
Search/Exam
Nov 16, 2015
(Electronic) Receipt
Search/Exam
Nov 16, 2015
Amended claims with annotations
Search/Exam
Nov 16, 2015
Amended description with annotations
Search/Exam
Nov 16, 2015
Claims
Search/Exam
Nov 16, 2015
Description
Search/Exam
Nov 16, 2015
Letter accompanying subsequently filed items
Search/Exam
Nov 16, 2015
Sep 28, 2015
Sep 23, 2015
(Electronic) Receipt
Search/Exam
Sep 23, 2015
Letter accompanying subsequently filed items
Search/Exam
Sep 23, 2015
May 13, 2015
Annex to a communication
Search/Exam
May 13, 2015
Annex to the communication
Search/Exam
May 13, 2015
Communication from the Examining Division
Search/Exam
Apr 29, 2015
Examination started
Search/Exam
Apr 1, 2014
(Electronic) Receipt
Search/Exam
Apr 1, 2014
Apr 1, 2014
Amended claims with annotations
Search/Exam
Apr 1, 2014
Apr 1, 2014
Amended description with annotations
Search/Exam
Apr 1, 2014
Amendments received before examination
Search/Exam
Apr 1, 2014
Letter accompanying subsequently filed items
Search/Exam
Dec 11, 2013
Dec 2, 2013
Communication to designated inventor
Search/Exam
Nov 25, 2013
(Electronic) Receipt
Search/Exam
Nov 25, 2013
Letter accompanying subsequently filed items
Search/Exam
Nov 25, 2013
Letter concerning the inventor
Search/Exam
Nov 4, 2013
Oct 29, 2013
Letter which had not been notified
Search/Exam
Oct 10, 2013
Oct 8, 2013
Communication to designated inventor
Search/Exam
Oct 8, 2013
Communication to designated inventor
Search/Exam
Oct 8, 2013
Communication to designated inventor
Search/Exam
Oct 8, 2013
Communication to designated inventor
Search/Exam
Oct 8, 2013
Communication to designated inventor
Search/Exam
Oct 1, 2013
Refund of fees
Search/Exam
Sep 17, 2013
Sep 16, 2013
(Electronic) Receipt
Search/Exam
Sep 16, 2013
Refund of fees
Search/Exam
Sep 16, 2013
Request for entry into the European phase
Search/Exam
Jul 12, 2013
Information on entry into European phase
Search/Exam
Dec 17, 2012
Notification of the recording of a change
Search/Exam
Sep 7, 2012
Copy of the international search report
Search/Exam
Sep 7, 2012
Published international application - A1
Search/Exam
Nov 1, 2011
Nov 1, 2011
Nov 1, 2011
Mar 17, 2011
Abstract
PCTISA
Mar 17, 2011
Claims
PCTISA
Mar 17, 2011
Description
PCTISA