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The patent EP3433332 was granted to Stora Enso OYJ on Jun 28, 2023. The application was filed on Mar 20, 2017 under application number EP17769539A. 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 | Mar 27, 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 | US3216839 |
| INTERNATIONAL-SEARCH-REPORT | CA707382 |
| INTERNATIONAL-SEARCH-REPORT | GB644791 |
| INTERNATIONAL-SEARCH-REPORT | JPS63112677 |
| INTERNATIONAL-SEARCH-REPORT | RU2009129419 |
| INTERNATIONAL-SEARCH-REPORT | US2015119560 |
| INTERNATIONAL-SEARCH-REPORT | US3006874 |
| INTERNATIONAL-SEARCH-REPORT | US4113675 |
| INTERNATIONAL-SEARCH-REPORT | US5470433 |
| INTERNATIONAL-SEARCH-REPORT | WO2013144454 |
| OPPOSITION | GB644791 |
| OPPOSITION | US3006874 |
| OPPOSITION | US3216839 |
| OPPOSITION | WO2016157141 |
| SEARCH | WO2015086772 |
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
OPPO
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Jul 11, 2023
Jun 2, 2023
Decision to grant a European patent
Search/Exam
May 19, 2023
May 17, 2023
(Electronic) Receipt
Search/Exam
May 17, 2023
Filing of the translations of the claims
Search/Exam
May 17, 2023
French translation of claims
Search/Exam
May 17, 2023
German translation of the claims
Search/Exam
May 17, 2023
Letter accompanying subsequently filed items
Search/Exam
May 17, 2023
Jan 19, 2023
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Jan 19, 2023
Intention to grant (signatures)
Search/Exam
Jan 19, 2023
Text intended for grant (clean copy)
Search/Exam
Jan 19, 2023
Jul 13, 2022
(Electronic) Receipt
Search/Exam
Jul 13, 2022
Amended claims with annotations
Search/Exam
Jul 13, 2022
Amended description with annotations
Search/Exam
Jul 13, 2022
Claims
Search/Exam
Jul 13, 2022
Description
Search/Exam
Jul 13, 2022
Letter accompanying subsequently filed items
Search/Exam
Jul 13, 2022
Mar 24, 2022
Annex to the communication
Search/Exam
Mar 24, 2022
Communication from the Examining Division
Search/Exam
Dec 23, 2020
Amended claims with annotations
Search/Exam
Dec 23, 2020
Amended description with annotations
Search/Exam
Dec 23, 2020
Claims
Search/Exam
Dec 23, 2020
Description
Search/Exam
Dec 23, 2020
Dec 21, 2020
Amended claims with annotations
Search/Exam
Dec 21, 2020
Amended description with annotations
Search/Exam
Dec 21, 2020
Claims
Search/Exam
Dec 21, 2020
Description
Search/Exam
Dec 21, 2020
Aug 20, 2020
Annex to the communication
Search/Exam
Aug 20, 2020
Communication from the Examining Division
Search/Exam
Aug 10, 2020
Examination started
Search/Exam
Jul 14, 2020
Jul 14, 2020
Amended claims with annotations
Search/Exam
Jul 14, 2020
Amended description with annotations
Search/Exam
Jul 14, 2020
Amendments received before examination
Search/Exam
Jul 14, 2020
Description
Search/Exam
Jul 8, 2020
Jul 8, 2020
Amended claims with annotations
Search/Exam
Jul 8, 2020
Jul 8, 2020
Amended description with annotations
Search/Exam
Jul 8, 2020
Amendments received before examination
Search/Exam
Jan 10, 2020
Dec 19, 2019
Dec 19, 2019
European search opinion
Search/Exam
Dec 19, 2019
Information on Search Strategy
Search/Exam
Dec 19, 2019
Supplementary European search report
Search/Exam
Dec 9, 2019
Search started
Search/Exam
Jan 4, 2019
Dec 7, 2018
Nov 29, 2018
Letter which had not been notified
Search/Exam
Nov 5, 2018
Oct 30, 2018
Communication to designated inventor
Search/Exam
Oct 30, 2018
Communication to designated inventor
Search/Exam
Oct 30, 2018
Communication to designated inventor
Search/Exam
Oct 17, 2018
(Electronic) Receipt
Search/Exam
Oct 17, 2018
Priority search results
Search/Exam
Oct 17, 2018
Request for entry into the European phase
Search/Exam
Oct 10, 2018
Aug 1, 2018
Information on entry into European phase
Search/Exam
Jan 4, 2018
Nov 28, 2017
Oct 17, 2017
Sep 28, 2017
Copy of the international search report
Search/Exam
Sep 28, 2017
Published international application - A1
Search/Exam