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The patent EP3502073 was granted to Schott on Oct 8, 2025. The application was filed on Dec 18, 2018 under application number EP18213707A. 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 |
|---|---|---|---|
| EUROKERA SNC | Jul 26, 2022 | SAINT GOBAIN RECHERCHE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE102008031428 |
| DESCRIPTION | DE102008050263 |
| DESCRIPTION | DE102011050873 |
| DESCRIPTION | DE102015103461 |
| DESCRIPTION | GB2430249 |
| DESCRIPTION | WO2010102859 |
| DESCRIPTION | WO2012076414 |
| OPPOSITION | DE102009013127 |
| OPPOSITION | DE102012105576 |
| OPPOSITION | DE202011110029U |
| OPPOSITION | DE202011110363U |
| OPPOSITION | DE202012012718U |
| OPPOSITION | DE202013012144U |
| OPPOSITION | DE202016007247U |
| OPPOSITION | FR2405906 |
| OPPOSITION | FR2992311 |
| OPPOSITION | US2017050880 |
| OPPOSITION | US2017260086 |
| OPPOSITION | US4526872 |
| OPPOSITION | US5010041 |
| OPPOSITION | US5179045 |
| OPPOSITION | US5204293 |
| OPPOSITION | US5256600 |
| OPPOSITION | WO2012001300 |
| OPPOSITION | WO2012172257 |
| OPPOSITION | WO2014068242 |
| SEARCH | DE102008050263 |
| SEARCH | DE102009013127 |
| SEARCH | DE202011110029U |
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.
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Description
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Decision to grant a European patent
Search/Exam
Sep 17, 2021
(Electronic) Receipt
Search/Exam
Sep 17, 2021
English translation of the claims
Search/Exam
Sep 17, 2021
Filing of the translations of the claims
Search/Exam
Sep 17, 2021
French translation of claims
Search/Exam
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Intention to grant (signatures)
Search/Exam
May 18, 2021
Text intended for grant (clean copy)
Search/Exam
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Examination started
Search/Exam
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(Electronic) Receipt
Search/Exam
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Amended claims with annotations
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Dec 20, 2019
Amendments received before examination
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Dec 20, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 1, 2019
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Notification of forthcoming publication
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May 13, 2019
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European search opinion
Search/Exam
May 13, 2019
European search report
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May 13, 2019
Information on Search Strategy
Search/Exam
Feb 8, 2019
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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Communication to designated inventor
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Letter concerning the priority
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Priority document
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Priority document
Search/Exam
Dec 18, 2018
Abstract
Search/Exam
Dec 18, 2018
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Claims
Search/Exam
Dec 18, 2018
Description
Search/Exam
Dec 18, 2018
Designation of inventor
Search/Exam
Dec 18, 2018
Drawings
Search/Exam
Dec 18, 2018
Request for grant of a European patent
Search/Exam