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The patent EP3256541 was granted to Chemetall on Nov 16, 2022. The application was filed on Feb 12, 2016 under application number EP16704603A. 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 |
|---|---|---|---|
| PPG INDUSTRIES | Aug 14, 2023 | F & E PATENT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP1478703 |
| DESCRIPTION | EP2518374 |
| DESCRIPTION | EP2586537 |
| DESCRIPTION | US2013137817 |
| DESCRIPTION | US7438974 |
| DESCRIPTION | WO2012021781 |
| DESCRIPTION | WO2013153047 |
| DESCRIPTION | WO2013154773 |
| DESCRIPTION | WO2014066039 |
| INTERNATIONAL-SEARCH-REPORT | DE102012205951 |
| INTERNATIONAL-SEARCH-REPORT | US2013137817 |
| INTERNATIONAL-SEARCH-REPORT | WO2014066039 |
| OPPOSITION | CN202823767U |
| OPPOSITION | DE10020679 |
| OPPOSITION | DE102015202619 |
| OPPOSITION | EP0182489 |
| OPPOSITION | EP2347831 |
| OPPOSITION | EP2865509 |
| OPPOSITION | JPS60251950 |
| OPPOSITION | US2008134971 |
| OPPOSITION | US2009217868 |
| OPPOSITION | US2012244284 |
| OPPOSITION | US2014272287 |
| OPPOSITION | US2015044369 |
| OPPOSITION | US3661744 |
| OPPOSITION | US6001181 |
| OPPOSITION | WO03070838 |
| OPPOSITION | WO2004069427 |
| OPPOSITION | WO2013090988 |
| OPPOSITION | WO2013153047 |
| OPPOSITION | WO2014066039 |
| OPPOSITION | WO2014184722 |
| OPPOSITION | WO2015171312 |
| OPPOSITION | WO2016128547 |
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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Nov 29, 2022
Oct 20, 2022
Decision to grant a European patent
Search/Exam
Oct 7, 2022
(Electronic) Receipt
Search/Exam
Oct 7, 2022
English translation of the claims
Search/Exam
Oct 7, 2022
Filing of the translations of the claims
Search/Exam
Oct 7, 2022
French translation of claims
Search/Exam
Jun 20, 2022
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Intention to grant (signatures)
Search/Exam
Jun 20, 2022
Text intended for grant (clean copy)
Search/Exam
Jun 20, 2022
Jul 6, 2021
(Electronic) Receipt
Search/Exam
Jul 6, 2021
Amended claims with annotations
Search/Exam
Jul 6, 2021
Claims
Search/Exam
Jul 6, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 6, 2021
Jun 14, 2021
Jun 9, 2021
(Electronic) Receipt
Search/Exam
Jun 9, 2021
Letter accompanying subsequently filed items
Search/Exam
Feb 1, 2021
Annex to the communication
Search/Exam
Feb 1, 2021
Communication from the Examining Division
Search/Exam
Mar 24, 2020
Decision to allow further processing
Search/Exam
Mar 11, 2020
(Electronic) Receipt
Search/Exam
Mar 11, 2020
Amended claims with annotations
Search/Exam
Mar 11, 2020
Claims
Search/Exam
Mar 11, 2020
Letter accompanying subsequently filed items
Search/Exam
Mar 11, 2020
Request for further processing
Search/Exam
Jan 29, 2020
Oct 25, 2019
Oct 21, 2019
(Electronic) Receipt
Search/Exam
Oct 21, 2019
Jun 21, 2019
Annex to the communication
Search/Exam
Jun 21, 2019
Communication from the Examining Division
Search/Exam
Jun 14, 2019
Examination started
Search/Exam
Jul 4, 2018
(Electronic) Receipt
Search/Exam
Jul 4, 2018
Citation for the examination procedure
Search/Exam
Jul 4, 2018
Citation for the examination procedure
Search/Exam
Jul 4, 2018
Letter accompanying subsequently filed items
Search/Exam
Jul 4, 2018
Jun 7, 2018
Jun 6, 2018
Decision to allow further processing
Search/Exam
May 25, 2018
(Electronic) Receipt
Search/Exam
May 25, 2018
May 25, 2018
Amended claims with annotations
Search/Exam
May 25, 2018
Letter accompanying subsequently filed items
Search/Exam
May 25, 2018
Request for further processing
Search/Exam
May 15, 2018
Nov 22, 2017
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Communication to designated inventor
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Sep 20, 2017
Communication to designated inventor
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Communication to designated inventor
Search/Exam
Sep 20, 2017
Communication to designated inventor
Search/Exam
Aug 30, 2017
Aug 22, 2017
Aug 18, 2017
(Electronic) Receipt
Search/Exam
Aug 18, 2017
Request for entry into the European phase
Search/Exam
Aug 1, 2017
Authorisation
Search/Exam
Aug 1, 2017
Letter accompanying subsequently filed items
Search/Exam
Jun 23, 2017
Information on entry into European phase
Search/Exam
Sep 6, 2016
Aug 18, 2016
Copy of the international search report
Search/Exam
Aug 18, 2016
Copy of the international search report
Search/Exam
Aug 18, 2016
Published international application - A1
Search/Exam
May 27, 2016
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Feb 12, 2016
(Electronic) Receipt
PCTRO
Feb 12, 2016
Abstract
PCTRO
Feb 12, 2016
Claims
PCTRO
Feb 12, 2016
Description
PCTRO
Feb 12, 2016
Feb 12, 2016