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The patent EP3824046 was granted to Neste OYJ on Sep 24, 2025. The application was filed on Jul 19, 2019 under application number EP19742578A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 | May 30, 2023 | HOFFMANN EITLE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | CA2174947 |
| EXAMINATION | CN106256893 |
| EXAMINATION | CN1282732 |
| EXAMINATION | EP0586196 |
| EXAMINATION | US2008163543 |
| EXAMINATION | US5068025 |
| EXAMINATION | US5507940 |
| INTERNATIONAL-SEARCH-REPORT | EP0574272 |
| INTERNATIONAL-SEARCH-REPORT | US2013072730 |
| INTERNATIONAL-SEARCH-REPORT | US2015361356 |
| INTERNATIONAL-SEARCH-REPORT | US2016257888 |
| OPPOSITION | CH506470 |
| OPPOSITION | CN103897718 |
| OPPOSITION | US2002153309 |
| OPPOSITION | US2011138680 |
| OPPOSITION | US2016257888 |
| OPPOSITION | US4344841 |
| OPPOSITION | WO2007098928 |
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 28, 2025
Aug 20, 2025
Aug 20, 2025
Aug 20, 2025
Aug 20, 2025
Jun 3, 2025
Refund of fees
Appeal
Jun 2, 2025
Jun 2, 2025
Jun 2, 2025
May 28, 2025
May 28, 2025
May 27, 2025
May 22, 2025
May 19, 2025
(Electronic) Receipt
Appeal
May 19, 2025
May 19, 2025
May 19, 2025
Withdrawal of an appeal
Appeal
Apr 4, 2025
Apr 1, 2025
(Electronic) Receipt
Appeal
Apr 1, 2025
Apr 1, 2025
Mar 27, 2025
Mar 27, 2025
Mar 21, 2025
(Electronic) Receipt
Appeal
Mar 21, 2025
Mar 21, 2025
Notice of appeal
Appeal
Jan 24, 2025
Jan 24, 2025
Jan 24, 2025
Jan 24, 2025
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Means of redress
OPPO
Jan 24, 2025
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Sep 13, 2022
Aug 4, 2022
Decision to grant a European patent
Search/Exam
Jul 22, 2022
(Electronic) Receipt
Search/Exam
Jul 22, 2022
French translation of claims
Search/Exam
Jul 22, 2022
German translation of the claims
Search/Exam
Jul 22, 2022
Letter accompanying subsequently filed items
Search/Exam
Mar 30, 2022
Mar 30, 2022
Mar 30, 2022
Intention to grant (signatures)
Search/Exam
Mar 30, 2022
Text intended for grant (clean copy)
Search/Exam
Mar 30, 2022
Feb 25, 2022
Examination started
Search/Exam
Sep 2, 2021
(Electronic) Receipt
Search/Exam
Sep 2, 2021
Sep 2, 2021
Amended claims with annotations
Search/Exam
Sep 2, 2021
Amendments received before examination
Search/Exam
Sep 2, 2021
Letter accompanying subsequently filed items
Search/Exam
May 3, 2021
Apr 29, 2021
Mar 2, 2021
Feb 26, 2021
Communication to designated inventor
Search/Exam
Feb 26, 2021
Communication to designated inventor
Search/Exam
Feb 26, 2021
Communication to designated inventor
Search/Exam
Feb 26, 2021
Communication to designated inventor
Search/Exam
Feb 26, 2021
Communication to designated inventor
Search/Exam
Feb 26, 2021
Communication to designated inventor
Search/Exam
Feb 26, 2021
Communication to designated inventor
Search/Exam
Feb 26, 2021
Communication to designated inventor
Search/Exam
Feb 26, 2021
Communication to designated inventor
Search/Exam
Feb 26, 2021
Communication to designated inventor
Search/Exam
Feb 26, 2021
Communication to designated inventor
Search/Exam
Feb 26, 2021
Communication to designated inventor
Search/Exam
Feb 26, 2021
Communication to designated inventor
Search/Exam
Feb 18, 2021
(Electronic) Receipt
Search/Exam
Feb 18, 2021
Priority search results
Search/Exam
Feb 18, 2021
Request for entry into the European phase
Search/Exam
Dec 16, 2020
Dec 16, 2020
Dec 16, 2020
Dec 16, 2020
Dec 16, 2020
Nov 27, 2020
Information on entry into European phase
Search/Exam
Sep 9, 2020
Sep 9, 2020
Sep 9, 2020
Jul 10, 2020
Written opinion
PCT2
Jul 10, 2020
Jul 10, 2020
Jun 11, 2020
Notification of election of EPO
Search/Exam
May 27, 2020
May 19, 2020
PCT demand form
PCT2
May 19, 2020
May 19, 2020
May 19, 2020
May 19, 2020
Feb 11, 2020
Jan 23, 2020
Copy of the international search report
Search/Exam
Jan 23, 2020
Published international application - A1
Search/Exam
Oct 4, 2019
(Electronic) Receipt
PCTRO
Oct 4, 2019
Oct 4, 2019
Oct 4, 2019
Aug 5, 2019
Aug 5, 2019
Jul 19, 2019
(Electronic) Receipt
PCTRO
Jul 19, 2019
Abstract
PCTRO
Jul 19, 2019
Claims
PCTRO
Jul 19, 2019
Description
PCTRO
Jul 19, 2019
Jul 19, 2019
Drawings
PCTRO
Jul 19, 2019