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The patent EP3377550 was granted to PPG Industries Ohio on Jul 23, 2025. The application was filed on Nov 21, 2016 under application number EP16805704A. 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 |
|---|---|---|---|
| AXALTA COATING SYSTEMS GERMANY | Aug 11, 2021 | INGRASSIA | - |
| AXALTA COATING SYSTEMS GERMANY | Aug 11, 2021 | LKGLOBAL UK | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US4157924 |
| DESCRIPTION | US4186036 |
| DESCRIPTION | US4739019 |
| DESCRIPTION | US4941930 |
| DESCRIPTION | US5238506 |
| DESCRIPTION | US5294265 |
| DESCRIPTION | US5306526 |
| DESCRIPTION | US5653790 |
| INTERNATIONAL-SEARCH-REPORT | EP1242548 |
| INTERNATIONAL-SEARCH-REPORT | EP1736246 |
| INTERNATIONAL-SEARCH-REPORT | EP1868736 |
| OPPOSITION | EP0469646 |
| OPPOSITION | EP1736246 |
| OPPOSITION | JP2001262053 |
| OPPOSITION | US2005256252 |
| OPPOSITION | US6239214 |
| OPPOSITION | WO2006104664 |
| OPPOSITION | WO2008123387 |
| OPPOSITION | WO2013027093 |
| OPPOSITION | WO2015143146 |
| OPPOSITION | WO2017087933 |
| OPPOSITION | WO9404581 |
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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Refund of fees
Appeal
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(Electronic) Receipt
Appeal
Feb 26, 2025
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Withdrawal of an appeal
Appeal
Jan 27, 2025
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Appeal
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Sep 12, 2023
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Jul 7, 2023
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Notice of appeal
Appeal
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Means of redress
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Decision to grant a European patent
Search/Exam
Oct 1, 2020
(Electronic) Receipt
Search/Exam
Oct 1, 2020
Filing of the translations of the claims
Search/Exam
Oct 1, 2020
French translation of claims
Search/Exam
Oct 1, 2020
German translation of the claims
Search/Exam
Oct 1, 2020
Letter accompanying subsequently filed items
Search/Exam
May 29, 2020
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Intention to grant (signatures)
Search/Exam
May 29, 2020
Text intended for grant (clean copy)
Search/Exam
May 29, 2020
Nov 7, 2019
(Electronic) Receipt
Search/Exam
Nov 7, 2019
Letter accompanying subsequently filed items
Search/Exam
Nov 7, 2019
Jul 26, 2019
Annex to the communication
Search/Exam
Jul 26, 2019
Communication from the Examining Division
Search/Exam
Jul 11, 2019
(Electronic) Receipt
Search/Exam
Jul 11, 2019
Amended claims with annotations
Search/Exam
Jul 11, 2019
Claims
Search/Exam
Jul 11, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 11, 2019
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Annex to the communication
Search/Exam
May 28, 2019
Communication from the Examining Division
Search/Exam
May 21, 2019
(Electronic) Receipt
Search/Exam
May 21, 2019
Amended claims with annotations
Search/Exam
May 21, 2019
Claims
Search/Exam
May 21, 2019
Letter accompanying subsequently filed items
Search/Exam
May 21, 2019
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Intention to grant (signatures)
Search/Exam
May 3, 2019
Text intended for grant (clean copy)
Search/Exam
May 3, 2019
Mar 26, 2019
Examination started
Search/Exam
Oct 31, 2018
(Electronic) Receipt
Search/Exam
Oct 31, 2018
Letter accompanying subsequently filed items
Search/Exam
Oct 31, 2018
Reply to Written Opinion prepared by the EPO
Search/Exam
Aug 29, 2018
Jul 12, 2018
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Communication to designated inventor
Search/Exam
Jun 22, 2018
Communication to designated inventor
Search/Exam
Jun 18, 2018
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(Electronic) Receipt
Search/Exam
Jun 4, 2018
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Amended claims with annotations
Search/Exam
Jun 4, 2018
Amendments received before examination
Search/Exam
Jun 4, 2018
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Request for entry into the European phase
Search/Exam
Apr 3, 2018
Information on entry into European phase
Search/Exam
Jun 15, 2017
May 26, 2017
Copy of the international search report
Search/Exam
May 26, 2017
Published international application - A1
Search/Exam
Mar 2, 2017
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