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The patent EP3655484 was granted to Stora Enso OYJ on Oct 18, 2023. The application was filed on Jul 2, 2018 under application number EP18835704A. 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 |
|---|---|---|---|
| UPM KYMMENE | Jul 8, 2024 | HOFFMANN EITLE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2014296429 |
| DESCRIPTION | WO2006031175 |
| INTERNATIONAL-SEARCH-REPORT | DE3509712 |
| INTERNATIONAL-SEARCH-REPORT | US2011245381 |
| INTERNATIONAL-SEARCH-REPORT | US2014296429 |
| INTERNATIONAL-SEARCH-REPORT | US4303562 |
| INTERNATIONAL-SEARCH-REPORT | WO2016165023 |
| OPPOSITION | DE3509712 |
| OPPOSITION | US2014296429 |
| OPPOSITION | US4303562 |
| OPPOSITION | WO2016157141 |
| SEARCH | WO2016157141 |
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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Jan 7, 2026
Jan 7, 2026
Dec 24, 2025
(Electronic) Receipt
Appeal
Dec 24, 2025
Notice of appeal
Appeal
Nov 24, 2025
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Means of redress
OPPO
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Oct 31, 2023
Sep 21, 2023
Decision to grant a European patent
Search/Exam
Sep 8, 2023
(Electronic) Receipt
Search/Exam
Sep 8, 2023
Filing of the translations of the claims
Search/Exam
Sep 8, 2023
French translation of claims
Search/Exam
Sep 8, 2023
German translation of the claims
Search/Exam
Sep 8, 2023
Letter accompanying subsequently filed items
Search/Exam
May 15, 2023
May 15, 2023
May 15, 2023
May 15, 2023
Intention to grant (signatures)
Search/Exam
May 15, 2023
Text intended for grant (clean copy)
Search/Exam
May 15, 2023
Apr 26, 2023
Examination started
Search/Exam
Sep 15, 2021
(Electronic) Receipt
Search/Exam
Sep 15, 2021
Sep 15, 2021
Amended claims with annotations
Search/Exam
Sep 15, 2021
Sep 15, 2021
Amended description with annotations
Search/Exam
Sep 15, 2021
Amendments received before examination
Search/Exam
Sep 15, 2021
Letter accompanying subsequently filed items
Search/Exam
Mar 10, 2021
Feb 18, 2021
Feb 18, 2021
European search opinion
Search/Exam
Feb 18, 2021
Information on Search Strategy
Search/Exam
Feb 18, 2021
Supplementary European search report
Search/Exam
Feb 9, 2021
Search started
Search/Exam
Apr 30, 2020
Feb 27, 2020
Feb 25, 2020
Communication to designated inventor
Search/Exam
Feb 25, 2020
Communication to designated inventor
Search/Exam
Feb 25, 2020
Communication to designated inventor
Search/Exam
Feb 17, 2020
(Electronic) Receipt
Search/Exam
Feb 17, 2020
Priority search results
Search/Exam
Feb 17, 2020
Request for entry into the European phase
Search/Exam
Feb 4, 2020
Nov 29, 2019
Information on entry into European phase
Search/Exam
Feb 15, 2019
Jan 24, 2019
Copy of the international search report
Search/Exam
Jan 24, 2019
Published international application - A1
Search/Exam