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The patent EP3441375 was granted to AGC on Jan 5, 2022. The application was filed on Mar 29, 2017 under application number EP17779018A. 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 |
|---|---|---|---|
| PILKINGTON GROUP | Oct 5, 2022 | FORTT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2011505330 |
| INTERNATIONAL-SEARCH-REPORT | US5812332 |
| INTERNATIONAL-SEARCH-REPORT | WO2015086234 |
| INTERNATIONAL-SEARCH-REPORT | WO2016017566 |
| OPPOSITION | DE102007059323 |
| OPPOSITION | DE202008018075U |
| OPPOSITION | EP3301502 |
| OPPOSITION | JP2015131926 |
| OPPOSITION | JP2016077280 |
| OPPOSITION | US2003215610 |
| OPPOSITION | US2010314900 |
| OPPOSITION | US2012070624 |
| OPPOSITION | US2016004076 |
| OPPOSITION | US3700542 |
| OPPOSITION | US5812332 |
| OPPOSITION | US6414796 |
| OPPOSITION | WO2015086234 |
| OPPOSITION | WO2017002312 |
| OPPOSITION | WO2017176452 |
| SEARCH | US2010314900 |
| SEARCH | WO2015086234 |
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 1, 2025
(Electronic) Receipt
Appeal
Dec 1, 2025
Dec 1, 2025
Claims
Appeal
Dec 1, 2025
Dec 1, 2025
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Nov 17, 2025
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(Electronic) Receipt
Appeal
Nov 12, 2025
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(Electronic) Receipt
Appeal
Oct 3, 2025
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(Electronic) Receipt
Appeal
Jul 10, 2025
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Reply to appeal
Appeal
Jul 9, 2025
(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Mar 10, 2025
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Mar 5, 2025
(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Jan 3, 2025
(Electronic) Receipt
Appeal
Jan 3, 2025
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Notice of appeal
Appeal
Jan 3, 2025
Notice of appeal
Appeal
Nov 5, 2024
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Jan 18, 2022
Dec 9, 2021
Decision to grant a European patent
Search/Exam
Nov 22, 2021
(Electronic) Receipt
Search/Exam
Nov 22, 2021
Filing of the translations of the claims
Search/Exam
Nov 22, 2021
French translation of claims
Search/Exam
Nov 22, 2021
German translation of the claims
Search/Exam
Nov 22, 2021
Letter accompanying subsequently filed items
Search/Exam
Sep 30, 2021
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Intention to grant (signatures)
Search/Exam
Sep 30, 2021
Text intended for grant (clean copy)
Search/Exam
Sep 30, 2021
Sep 8, 2021
Examination started
Search/Exam
May 22, 2020
(Electronic) Receipt
Search/Exam
May 22, 2020
May 22, 2020
Amended claims with annotations
Search/Exam
May 22, 2020
Amendments received before examination
Search/Exam
May 22, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 29, 2019
Nov 12, 2019
Nov 12, 2019
European search opinion
Search/Exam
Nov 12, 2019
Information on Search Strategy
Search/Exam
Nov 12, 2019
Supplementary European search report
Search/Exam
Oct 17, 2019
Search started
Search/Exam
Oct 9, 2019
(Electronic) Receipt
Search/Exam
Oct 9, 2019
Enquiry as to the processing of the file
Search/Exam
Oct 9, 2019
Letter accompanying subsequently filed items
Search/Exam
Jan 16, 2019
Notification of forthcoming publication
Search/Exam
Nov 14, 2018
Nov 12, 2018
Communication to designated inventor
Search/Exam
Nov 12, 2018
Communication to designated inventor
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Nov 12, 2018
Communication to designated inventor
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Oct 24, 2018
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Oct 4, 2018
(Electronic) Receipt
Search/Exam
Oct 4, 2018
Abstract
Search/Exam
Oct 4, 2018
Claims
Search/Exam
Oct 4, 2018
Description
Search/Exam
Oct 4, 2018
Drawings
Search/Exam
Oct 4, 2018
Request for entry into the European phase
Search/Exam
Aug 20, 2018
Information on entry into European phase
Search/Exam
Jul 19, 2018
Notification of the recording of a change
Search/Exam
Oct 31, 2017
Oct 12, 2017
Copy of the international search report
Search/Exam
Oct 12, 2017
Oct 12, 2017
International publication pamphlet
Search/Exam