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The patent EP2971234 was granted to PPG Industries Ohio on Dec 2, 2020. The application was filed on Mar 7, 2014 under application number EP14714065A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| CHEMETALL | Sep 1, 2021 | STEFFAN & KIEHNE | - |
| CHEMETALL | Sep 1, 2021 | STEFFAN & KIEHNE PATENTANWALTE PARTG MBB | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US20040892919 |
| DESCRIPTION | US20060337062 |
| DESCRIPTION | CA2087352 |
| DESCRIPTION | DE2707405 |
| DESCRIPTION | EP0012463 |
| DESCRIPTION | US2004163736 |
| DESCRIPTION | US2005287348 |
| DESCRIPTION | US3455806 |
| DESCRIPTION | US3663389 |
| DESCRIPTION | US3749657 |
| DESCRIPTION | US3793278 |
| DESCRIPTION | US3912548 |
| DESCRIPTION | US3928157 |
| DESCRIPTION | US3947338 |
| DESCRIPTION | US3947339 |
| DESCRIPTION | US3962165 |
| DESCRIPTION | US3975346 |
| DESCRIPTION | US3984299 |
| DESCRIPTION | US3984922 |
| DESCRIPTION | US4001101 |
| DESCRIPTION | US4116900 |
| DESCRIPTION | US4134866 |
| DESCRIPTION | US4134932 |
| DESCRIPTION | US5149382 |
| DESCRIPTION | US5209788 |
| DESCRIPTION | US5328525 |
| DESCRIPTION | US5449415 |
| DESCRIPTION | US5653823 |
| DESCRIPTION | US5662746 |
| DESCRIPTION | US6797387 |
| DESCRIPTION | US6875800 |
| DESCRIPTION | US6894086 |
| DESCRIPTION | US7432333 |
| DESCRIPTION | US7470752 |
| DESCRIPTION | WO9533869 |
| EXAMINATION | US2009032144 |
| EXAMINATION | WO2008100476 |
| INTERNATIONAL-SEARCH-REPORT | US2011189401 |
| INTERNATIONAL-SEARCH-REPORT | WO2004101850 |
| OPPOSITION | US6440224 |
| OPPOSITION | WO2008100476 |
| OPPOSITION | WO2014150020 |
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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Dec 5, 2025
Dec 4, 2025
(Electronic) Receipt
Appeal
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Aug 28, 2025
(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Aug 26, 2025
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(Electronic) Receipt
Appeal
Aug 25, 2025
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Reply to appeal
Appeal
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Appeal
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Appeal
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Notice of appeal
Appeal
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(Electronic) Receipt
Appeal
Feb 6, 2025
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Notice of appeal
Appeal
Dec 23, 2024
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Means of redress
OPPO
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Dec 14, 2020
Nov 5, 2020
Decision to grant a European patent
Search/Exam
Oct 21, 2020
(Electronic) Receipt
Search/Exam
Oct 21, 2020
Filing of the translations of the claims
Search/Exam
Oct 21, 2020
French translation of claims
Search/Exam
Oct 21, 2020
German translation of the claims
Search/Exam
Oct 21, 2020
Letter accompanying subsequently filed items
Search/Exam
Jun 12, 2020
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Intention to grant (signatures)
Search/Exam
Jun 12, 2020
Text intended for grant (clean copy)
Search/Exam
Jun 12, 2020
Feb 27, 2019
(Electronic) Receipt
Search/Exam
Feb 27, 2019
Amended claims with annotations
Search/Exam
Feb 27, 2019
Claims
Search/Exam
Feb 27, 2019
Letter accompanying subsequently filed items
Search/Exam
Feb 27, 2019
Oct 26, 2018
Annex to the communication
Search/Exam
Oct 26, 2018
Communication from the Examining Division
Search/Exam
Aug 1, 2018
(Electronic) Receipt
Search/Exam
Aug 1, 2018
Amended claims with annotations
Search/Exam
Aug 1, 2018
Claims
Search/Exam
Aug 1, 2018
Letter accompanying subsequently filed items
Search/Exam
Aug 1, 2018
Mar 22, 2018
Annex to the communication
Search/Exam
Mar 22, 2018
Communication from the Examining Division
Search/Exam
Mar 16, 2018
Examination started
Search/Exam
May 10, 2016
May 10, 2016
Amended claims with annotations
Search/Exam
May 10, 2016
Amendments received before examination
Search/Exam
May 6, 2016
May 6, 2016
Amended claims with annotations
Search/Exam
May 6, 2016
Amendments received before examination
Search/Exam
May 6, 2016
Letter accompanying subsequently filed items
Search/Exam
May 6, 2016
Letter accompanying subsequently filed items
Search/Exam
Feb 2, 2016
Communication to designated inventor
Search/Exam
Jan 21, 2016
Letter concerning the inventor
Search/Exam
Dec 23, 2015
Dec 2, 2015
Nov 16, 2015
Letter which had not been notified
Search/Exam
Nov 6, 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
Search/Exam
Oct 20, 2015
Communication to designated inventor
Search/Exam
Oct 20, 2015
Communication to designated inventor
Search/Exam
Oct 2, 2015
Sep 28, 2015
Sep 28, 2015
Amended claims with annotations
Search/Exam
Sep 28, 2015
Amendments received before examination
Search/Exam
Sep 28, 2015
Payment of fees and costs
Search/Exam
Sep 28, 2015
Request for entry into the European phase
Search/Exam
Jul 29, 2015
Information on entry into European phase
Search/Exam
Oct 14, 2014
Sep 25, 2014
Copy of the international search report
Search/Exam
Sep 25, 2014
Published international application - A1
Search/Exam
May 23, 2014
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Mar 31, 2014
Abstract
PCTISA
Mar 31, 2014
Annex
PCTISA
Mar 31, 2014
Claims
PCTISA
Mar 31, 2014
Description
PCTISA
Mar 31, 2014