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The patent EP3728152 was granted to Schott on Nov 10, 2021. The application was filed on Dec 18, 2018 under application number EP18826613A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 | Aug 9, 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 | DE102016101036 |
| DESCRIPTION | DE19939787 |
| DESCRIPTION | DE2844030 |
| DESCRIPTION | EP1074520 |
| DESCRIPTION | EP1837312 |
| DESCRIPTION | JPS5051235 |
| DESCRIPTION | US2012085336 |
| DESCRIPTION | US2013098903 |
| DESCRIPTION | US2014146530 |
| DESCRIPTION | US2015274579 |
| DESCRIPTION | US2016281961 |
| DESCRIPTION | US3788865 |
| DESCRIPTION | WO2010102859 |
| DESCRIPTION | WO2010137000 |
| DESCRIPTION | WO2012076412 |
| DESCRIPTION | WO2012076414 |
| DESCRIPTION | WO2012168011 |
| DESCRIPTION | WO2014170275 |
| INTERNATIONAL-SEARCH-REPORT | DE3927174 |
| INTERNATIONAL-SEARCH-REPORT | US2008207424 |
| INTERNATIONAL-SEARCH-REPORT | US2016168018 |
| INTERNATIONAL-SEARCH-REPORT | US4285728 |
| OPPOSITION | FR2405906 |
| OPPOSITION | US2007259767 |
| OPPOSITION | US2012035041 |
| OPPOSITION | US2013130887 |
| OPPOSITION | US2013225388 |
| OPPOSITION | US5010041 |
| OPPOSITION | WO2012001300 |
| OPPOSITION | WO2014068242 |
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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Decision to grant a European patent
Search/Exam
Sep 30, 2021
(Electronic) Receipt
Search/Exam
Sep 30, 2021
English translation of the claims
Search/Exam
Sep 30, 2021
French translation of claims
Search/Exam
Sep 30, 2021
Letter accompanying subsequently filed items
Search/Exam
Jun 18, 2021
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Intention to grant (signatures)
Search/Exam
Jun 18, 2021
Text intended for grant (clean copy)
Search/Exam
Jun 18, 2021
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Examination started
Search/Exam
Apr 28, 2021
(Electronic) Receipt
Search/Exam
Apr 28, 2021
Letter accompanying subsequently filed items
Search/Exam
Apr 28, 2021
Mar 17, 2021
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(Electronic) Receipt
Search/Exam
Feb 3, 2021
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Amended claims with annotations
Search/Exam
Feb 3, 2021
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Amended description with annotations
Search/Exam
Feb 3, 2021
Amendments received before examination
Search/Exam
Feb 3, 2021
Letter accompanying subsequently filed items
Search/Exam
Sep 30, 2020
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Communication to designated inventor
Search/Exam
Jul 27, 2020
Communication to designated inventor
Search/Exam
Jul 6, 2020
May 4, 2020
Information on entry into European phase
Search/Exam
Apr 22, 2020
(Electronic) Receipt
Search/Exam
Apr 22, 2020
Request for entry into the European phase
Search/Exam
Jul 18, 2019
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Jun 27, 2019
Copy of the international search report
Search/Exam
Jun 27, 2019
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Published international application - A1
Search/Exam
Apr 30, 2019
ISR: cited documents
PCTISA
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(Electronic) Receipt
PCTRO
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(Electronic) Receipt
PCTRO
Dec 18, 2018
Abstract
PCTRO
Dec 18, 2018
Claims
PCTRO
Dec 18, 2018
Description
PCTRO
Dec 18, 2018
Dec 18, 2018
Drawings
PCTRO
Dec 18, 2018