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The patent EP3303483 was granted to PRC Desoto on Jul 17, 2019. The application was filed on May 27, 2016 under application number EP16732798A. 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 |
|---|---|---|---|
| AKZO NOBEL | Apr 7, 2020 | AKZO NOBEL DEPARTMENT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2012149820 |
| DESCRIPTION | US3799854 |
| DESCRIPTION | US4046729 |
| DESCRIPTION | US4147679 |
| DESCRIPTION | US4157924 |
| DESCRIPTION | US4186036 |
| DESCRIPTION | US4345057 |
| DESCRIPTION | US4403003 |
| DESCRIPTION | US4650718 |
| DESCRIPTION | US4681811 |
| DESCRIPTION | US4739019 |
| DESCRIPTION | US4941930 |
| DESCRIPTION | US5071904 |
| DESCRIPTION | US5238506 |
| DESCRIPTION | US5260135 |
| DESCRIPTION | US5294265 |
| DESCRIPTION | US5306526 |
| DESCRIPTION | US5653790 |
| DESCRIPTION | US5814410 |
| DESCRIPTION | US5891981 |
| DESCRIPTION | US6159549 |
| DESCRIPTION | US6440580 |
| DESCRIPTION | US6774168 |
| DESCRIPTION | WO9814379 |
| INTERNATIONAL-SEARCH-REPORT | US4219358 |
| INTERNATIONAL-SEARCH-REPORT | US6464774 |
| INTERNATIONAL-SEARCH-REPORT | US6478886 |
| INTERNATIONAL-SEARCH-REPORT | WO02085541 |
| INTERNATIONAL-SEARCH-REPORT | WO2010112605 |
| INTERNATIONAL-SEARCH-REPORT | WO2014151533 |
| OPPOSITION | US2002197468 |
| OPPOSITION | US2012025142 |
| OPPOSITION | US2015072161 |
| OPPOSITION | US5096805 |
| OPPOSITION | WO2016196252 |
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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Appeal
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Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Search/Exam
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Letter accompanying subsequently filed items
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(Electronic) Receipt
Appeal
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Notice of appeal
Appeal
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Decision to grant a European patent
Search/Exam
May 31, 2019
(Electronic) Receipt
Search/Exam
May 31, 2019
Filing of the translations of the claims
Search/Exam
May 31, 2019
French translation of claims
Search/Exam
May 31, 2019
German translation of the claims
Search/Exam
May 31, 2019
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Apr 11, 2019
Text intended for grant (clean copy)
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(Electronic) Receipt
Search/Exam
Feb 25, 2019
Amended description with annotations
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Feb 25, 2019
Description
Search/Exam
Feb 25, 2019
Letter accompanying subsequently filed items
Search/Exam
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Translation of the claims
Search/Exam
Feb 25, 2019
Translation of the claims
Search/Exam
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Intention to grant (signatures)
Search/Exam
Nov 2, 2018
Text intended for grant (clean copy)
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Sep 24, 2018
Examination started
Search/Exam
Jul 11, 2018
(Electronic) Receipt
Search/Exam
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Amended claims with annotations
Search/Exam
Jul 11, 2018
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Jul 11, 2018
Letter accompanying subsequently filed items
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Dec 21, 2017
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(Electronic) Receipt
Search/Exam
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Amended claims with annotations
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Dec 1, 2017
Amendments received before examination
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Request for entry into the European phase
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Oct 13, 2017
Information on entry into European phase
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Copy of the international search report
Search/Exam
Dec 8, 2016
Published international application - A1
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