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The patent EP4271882 was granted to Mondi on Nov 13, 2024. The application was filed on Dec 28, 2021 under application number EP21840780A. 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 |
|---|---|---|---|
| BILLERUD AKTIEBOLAG PUBL | Aug 12, 2025 | KRANSELL & WENNBORG KB | ADMISSIBLE |
| SMURFIT WESTROCK EUROPE | Aug 8, 2025 | PATENTANWALTSKANZLEI MATSCHNIG & FORSTHUBER | ADMISSIBLE |
| NORDIC PAPER AMOTFORS | Jun 27, 2025 | BJERKEN HYNELL KB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | CN109594422 |
| INTERNATIONAL-SEARCH-REPORT | WO2018229336 |
| OPPOSITION | CN109594422 |
| OPPOSITION | EP1208266 |
| OPPOSITION | EP1252392 |
| OPPOSITION | EP1427885 |
| OPPOSITION | EP3184297 |
| OPPOSITION | EP3385445 |
| OPPOSITION | EP3633104 |
| OPPOSITION | US5351461 |
| OPPOSITION | WO2018229336 |
| OPPOSITION | WO2019029863 |
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
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Authorisation
OPPO
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Nov 26, 2024
Oct 17, 2024
Decision to grant a European patent
Search/Exam
Oct 3, 2024
(Electronic) Receipt
Search/Exam
Oct 3, 2024
English translation of the claims
Search/Exam
Oct 3, 2024
Filing of the translations of the claims
Search/Exam
Oct 3, 2024
French translation of claims
Search/Exam
Oct 3, 2024
Letter accompanying subsequently filed items
Search/Exam
Jun 26, 2024
Jun 26, 2024
Jun 26, 2024
Jun 26, 2024
Intention to grant (signatures)
Search/Exam
Jun 26, 2024
Text intended for grant (clean copy)
Search/Exam
Jun 26, 2024
Jun 3, 2024
Examination started
Search/Exam
Jan 4, 2024
Refund of fees
Search/Exam
Oct 11, 2023
Aug 8, 2023
Jul 31, 2023
Refund of fees
Search/Exam
Jul 18, 2023
(Electronic) Receipt
Search/Exam
Jul 18, 2023
Request for entry into the European phase
Search/Exam
Jul 3, 2023
Jul 3, 2023
Jun 13, 2023
Letter which had not been notified
Search/Exam
May 12, 2023
Information on entry into European phase
Search/Exam
Jan 30, 2023
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Dec 8, 2022
Notification of election of EPO
Search/Exam
Dec 6, 2022
Nov 29, 2022
Nov 29, 2022
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PCT demand form
PCT2
Nov 29, 2022
Nov 29, 2022
Nov 12, 2022
Nov 12, 2022
Notification of the recording of a change
Search/Exam
Nov 12, 2022
Nov 12, 2022
Nov 8, 2022
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Jul 7, 2022
Copy of the international search report
Search/Exam
Jul 7, 2022
Copy of the international search report
Search/Exam
Jul 7, 2022
Published international application - A1
Search/Exam
Mar 28, 2022
ISR: cited documents
PCTISA
Mar 28, 2022
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Jan 11, 2022
Abstract
PCTISA
Jan 11, 2022
Claims
PCTISA
Jan 11, 2022
Description
PCTISA
Jan 11, 2022
Drawings
PCTISA
Jan 11, 2022