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The patent EP4069414 was granted to Topsoe on Jan 31, 2024. The application was originally filed on Dec 3, 2020 under application number EP20816478A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | WO2019110267 |
| INTERNATIONAL-SEARCH-REPORT | CN202336644U |
| INTERNATIONAL-SEARCH-REPORT | US2015129805 |
| INTERNATIONAL-SEARCH-REPORT | WO2019110266 |
| INTERNATIONAL-SEARCH-REPORT | WO2019110268 |
| OPPOSITION | CN101832642 |
| OPPOSITION | CN203177465U |
| OPPOSITION | EP3574991 |
| OPPOSITION | GB1562346 |
| OPPOSITION | US6841134 |
| OPPOSITION | WO2019110268 |
| OPPOSITION | WO2019228796 |
| OPPOSITION | WO2019228797 |
| OPPOSITION | WO2019228798 |
| OPPOSITION | WO2021063792 |
| OPPOSITION | WO2021063793 |
| OPPOSITION | WO2021063794 |
| OPPOSITION | WO2021063795 |
| OPPOSITION | WO2021063796 |
| OPPOSITION | WO2021063799 |
| OPPOSITION | WO2021094346 |
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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Aug 28, 2025
Aug 27, 2025
Aug 25, 2025
Aug 15, 2025
Aug 15, 2025
Authorisation
OPPO
Aug 15, 2025
Aug 15, 2025
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Feb 13, 2024
Jan 5, 2024
Decision to grant a European patent
Search/Exam
Nov 22, 2023
(Electronic) Receipt
Search/Exam
Nov 22, 2023
Filing of the translations of the claims
Search/Exam
Nov 22, 2023
French translation of claims
Search/Exam
Nov 22, 2023
German translation of the claims
Search/Exam
Nov 22, 2023
Letter accompanying subsequently filed items
Search/Exam
Oct 10, 2023
Oct 10, 2023
Oct 10, 2023
Oct 10, 2023
Intention to grant (signatures)
Search/Exam
Oct 10, 2023
Text intended for grant (clean copy)
Search/Exam
Oct 10, 2023
Aug 10, 2023
Examination started
Search/Exam
Jan 18, 2023
Refund of fees
Search/Exam
Jan 11, 2023
(Electronic) Receipt
Search/Exam
Jan 11, 2023
Jan 11, 2023
Amended claims with annotations
Search/Exam
Jan 11, 2023
Amendments received before examination
Search/Exam
Jan 11, 2023
Letter accompanying subsequently filed items
Search/Exam
Sep 14, 2022
Jul 14, 2022
Jul 12, 2022
Jul 5, 2022
Priority search results copy provided by EPO
Search/Exam
Jul 4, 2022
Annexes in respect of a client data request
Search/Exam
Jul 4, 2022
Annexes in respect of a client data request
Search/Exam
Jul 4, 2022
Letter accompanying subsequently filed items
Search/Exam
Jul 4, 2022
Jul 4, 2022
Jun 20, 2022
May 30, 2022
(Electronic) Receipt
Search/Exam
May 30, 2022
Request for entry into the European phase
Search/Exam
Apr 19, 2022
Information on entry into European phase
Search/Exam
Jun 28, 2021
Jun 10, 2021
Copy of the international search report
Search/Exam
Jun 10, 2021
Published international application - A1
Search/Exam
Feb 16, 2021
ISR: cited documents
PCTISA
Feb 16, 2021
Feb 16, 2021
Feb 16, 2021
Dec 29, 2020
Dec 29, 2020
Dec 14, 2020
Dec 11, 2020
Dec 8, 2020
Dec 3, 2020
(Electronic) Receipt
PCTRO
Dec 3, 2020
Abstract
PCTRO
Dec 3, 2020
Claims
PCTRO
Dec 3, 2020
Description
PCTRO
Dec 3, 2020
Dec 3, 2020
Drawings
PCTRO
Dec 3, 2020