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The patent EP4178706 was granted to Ahlstrom Munksj OYJ on Aug 14, 2024. The application was filed on Jul 7, 2021 under application number EP21740056A. 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 |
|---|---|---|---|
| NEENAH GESSNER | May 13, 2025 | WALL | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US3294582 |
| DESCRIPTION | US4383077 |
| DESCRIPTION | US5656733 |
| DESCRIPTION | US5683497 |
| DESCRIPTION | US5702521 |
| INTERNATIONAL-SEARCH-REPORT | CN103321090 |
| INTERNATIONAL-SEARCH-REPORT | GB954527 |
| INTERNATIONAL-SEARCH-REPORT | US2016136553 |
| INTERNATIONAL-SEARCH-REPORT | US3090700 |
| INTERNATIONAL-SEARCH-REPORT | US3226251 |
| INTERNATIONAL-SEARCH-REPORT | US3294582 |
| OPPOSITION | CA3122424 |
| OPPOSITION | GB954527 |
| OPPOSITION | US2014186627 |
| OPPOSITION | US2014242867 |
| OPPOSITION | US2016136553 |
| OPPOSITION | US2019152094 |
| OPPOSITION | US3294582 |
| OPPOSITION | US4455237 |
| OPPOSITION | US5202403 |
| OPPOSITION | US5780519 |
| OPPOSITION | WO2014140429 |
| OPPOSITION | WO2018205020 |
| OPPOSITION | WO2019113554 |
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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Authorisation
OPPO
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Decision to grant a European patent
Search/Exam
Jun 26, 2024
(Electronic) Receipt
Search/Exam
Jun 26, 2024
French translation of claims
Search/Exam
Jun 26, 2024
German translation of the claims
Search/Exam
Jun 26, 2024
Letter accompanying subsequently filed items
Search/Exam
Mar 5, 2024
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Intention to grant (signatures)
Search/Exam
Mar 5, 2024
Text intended for grant (clean copy)
Search/Exam
Mar 5, 2024
Feb 15, 2024
Examination started
Search/Exam
Aug 25, 2023
Aug 21, 2023
(Electronic) Receipt
Search/Exam
Aug 21, 2023
(Electronic) Receipt
Search/Exam
Aug 21, 2023
Aug 21, 2023
Amended claims with annotations
Search/Exam
Aug 21, 2023
Amendments received before examination
Search/Exam
Aug 21, 2023
Annexes in respect of a client data request
Search/Exam
Aug 21, 2023
Letter accompanying subsequently filed items
Search/Exam
Aug 21, 2023
Letter accompanying subsequently filed items
Search/Exam
Aug 21, 2023
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Feb 14, 2023
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Priority search results copy provided by EPO
Search/Exam
Dec 28, 2022
(Electronic) Receipt
Search/Exam
Dec 28, 2022
Priority search results
Search/Exam
Dec 28, 2022
Request for entry into the European phase
Search/Exam
Nov 22, 2022
Nov 22, 2022
Nov 22, 2022
Notification of the recording of a change
Search/Exam
Nov 22, 2022
Notification of the recording of a change
Search/Exam
Nov 18, 2022
Information on entry into European phase
Search/Exam
Jan 31, 2022
Jan 13, 2022
Copy of the international search report
Search/Exam
Jan 13, 2022
Published international application - A1
Search/Exam
Oct 16, 2021
Oct 16, 2021
Sep 24, 2021
Sep 24, 2021
Sep 15, 2021
Sep 10, 2021
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ISR: cited documents
PCTISA
Sep 10, 2021
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Aug 31, 2021
(Electronic) Receipt
PCTRO
Aug 31, 2021
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(Electronic) Receipt
PCTRO
Jul 7, 2021
Abstract
PCTRO
Jul 7, 2021
Claims
PCTRO
Jul 7, 2021
Description
PCTRO
Jul 7, 2021
Jul 7, 2021
Drawings
PCTRO
Jul 7, 2021
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