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The patent EP3737558 was granted to Saint Gobain on Oct 27, 2021. The application was filed on Nov 21, 2018 under application number EP18803999A. 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 | Jul 22, 2022 | FORTT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP2121308 |
| INTERNATIONAL-SEARCH-REPORT | DE69906366T |
| INTERNATIONAL-SEARCH-REPORT | US2009130395 |
| INTERNATIONAL-SEARCH-REPORT | US2016243796 |
| INTERNATIONAL-SEARCH-REPORT | US5443669 |
| INTERNATIONAL-SEARCH-REPORT | WO2017068368 |
| OPPOSITION | EP3434472 |
| OPPOSITION | JP2001354447 |
| OPPOSITION | JPH11335141 |
| OPPOSITION | US2008193686 |
| OPPOSITION | US2009257141 |
| OPPOSITION | US2010098917 |
| OPPOSITION | US2017190151 |
| OPPOSITION | US2020290319 |
| OPPOSITION | WO2016088472 |
| OPPOSITION | WO2017159452 |
| OPPOSITION | WO2019137674 |
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 13, 2025
Nov 13, 2025
Nov 7, 2025
(Electronic) Receipt
Appeal
Nov 7, 2025
Nov 7, 2025
Notice of appeal
Appeal
Nov 4, 2025
(Electronic) Receipt
Appeal
Nov 4, 2025
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Oct 29, 2025
(Electronic) Receipt
Appeal
Oct 29, 2025
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Notice of appeal
Appeal
Sep 23, 2025
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Means of redress
OPPO
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Search/Exam
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Nov 9, 2021
Sep 30, 2021
Decision to grant a European patent
Search/Exam
Sep 21, 2021
(Electronic) Receipt
Search/Exam
Sep 21, 2021
English translation of the claims
Search/Exam
Sep 21, 2021
Filing of the translations of the claims
Search/Exam
Sep 21, 2021
French translation of claims
Search/Exam
Aug 27, 2021
Aug 27, 2021
Aug 27, 2021
Intention to grant (signatures)
Search/Exam
Aug 27, 2021
Text intended for grant (clean copy)
Search/Exam
Aug 27, 2021
Aug 3, 2021
Examination started
Search/Exam
Oct 21, 2020
Aug 18, 2020
Aug 14, 2020
Communication to designated inventor
Search/Exam
Aug 11, 2020
Priority search results copy provided by EPO
Search/Exam
Jul 27, 2020
Jul 9, 2020
Jun 30, 2020
May 26, 2020
(Electronic) Receipt
Search/Exam
May 26, 2020
Information on entry into European phase
Search/Exam
May 26, 2020
Request for entry into the European phase
Search/Exam
Apr 22, 2020
Apr 22, 2020
Notification of the recording of a change
Search/Exam
Aug 7, 2019
Jul 18, 2019
Copy of the international search report
Search/Exam
Jul 18, 2019
Copy of the international search report
Search/Exam
Jul 18, 2019
Published international application - A1
Search/Exam
Feb 19, 2019
ISR: cited documents
PCTISA
Feb 19, 2019
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Dec 3, 2018
Nov 30, 2018
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(Electronic) Receipt
PCTRO
Nov 21, 2018
Abstract
PCTRO
Nov 21, 2018
Claims
PCTRO
Nov 21, 2018
Description
PCTRO
Nov 21, 2018
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Drawings
PCTRO
Nov 21, 2018
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