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The patent EP3721842 was granted to Trestech on Dec 6, 2023. The application was filed on Apr 8, 2020 under application number EP20168639A. 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 |
|---|---|---|---|
| ESSITY HYGIENE AND HEALTH AKTIEBOLAG | Sep 6, 2024 | ESSITY HYGIENE AND HEALTH | ADMISSIBLE |
| ESSITY HYGIENE AND HEALTH AKTIEBOLAG | Sep 6, 2024 | NEDERLANDSCH OCTROOIBUREAU | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2006219805 |
| DESCRIPTION | JP2019073950 |
| DESCRIPTION | JPH09296343 |
| OPPOSITION | EP3121321 |
| OPPOSITION | US2017071794 |
| OPPOSITION | US2018353345 |
| OPPOSITION | US4027677 |
| OPPOSITION | WO2008040414 |
| OPPOSITION | WO2013063554 |
| SEARCH | BE823583 |
| SEARCH | EP3459510 |
| SEARCH | US2016198797 |
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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Means of redress
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Description
OPPO
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Decision to grant a European patent
Search/Exam
Oct 26, 2023
(Electronic) Receipt
Search/Exam
Oct 26, 2023
Filing of the translations of the claims
Search/Exam
Oct 26, 2023
French translation of claims
Search/Exam
Oct 26, 2023
German translation of the claims
Search/Exam
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Intention to grant (signatures)
Search/Exam
Jun 27, 2023
Text intended for grant (clean copy)
Search/Exam
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(Electronic) Receipt
Search/Exam
Jan 25, 2023
Amended description with annotations
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Jan 25, 2023
Description
Search/Exam
Jan 25, 2023
Letter accompanying subsequently filed items
Search/Exam
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Annex to the communication
Search/Exam
Dec 2, 2022
Communication from the Examining Division
Search/Exam
Oct 19, 2021
(Electronic) Receipt
Search/Exam
Oct 19, 2021
Amended claims with annotations
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Oct 19, 2021
Claims
Search/Exam
Oct 19, 2021
Letter accompanying subsequently filed items
Search/Exam
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Annex to the communication
Search/Exam
Jun 11, 2021
Communication from the Examining Division
Search/Exam
Jun 2, 2021
Examination started
Search/Exam
Feb 12, 2021
(Electronic) Receipt
Search/Exam
Feb 12, 2021
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Amended claims with annotations
Search/Exam
Feb 12, 2021
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Amended description with annotations
Search/Exam
Feb 12, 2021
Amendments received before examination
Search/Exam
Feb 12, 2021
Letter accompanying subsequently filed items
Search/Exam
Oct 19, 2020
Sep 16, 2020
Notification of forthcoming publication
Search/Exam
Aug 21, 2020
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European search opinion
Search/Exam
Aug 21, 2020
European search report
Search/Exam
Aug 21, 2020
Information on Search Strategy
Search/Exam
Jun 15, 2020
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Jun 2, 2020
Communication to designated inventor
Search/Exam
Apr 8, 2020
Abstract
Search/Exam
Apr 8, 2020
Apr 8, 2020
Claims
Search/Exam
Apr 8, 2020
Description
Search/Exam
Apr 8, 2020
Designation of inventor
Search/Exam
Apr 8, 2020
Drawings
Search/Exam
Apr 8, 2020
Request for grant of a European patent
Search/Exam