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The patent EP3911580 was granted to Huhtamaki Flexible Packaging Germany on Apr 12, 2023. The application was filed on Jan 14, 2020 under application number EP20700711A. 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 |
|---|---|---|---|
| SONOCO | Jan 11, 2024 | HOFFMANN EITLE | ADMISSIBLE |
| TEKNI PLEX | Jan 11, 2024 | PAGE WHITE FARRER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US2004175527 |
| INTERNATIONAL-SEARCH-REPORT | US2005284789 |
| INTERNATIONAL-SEARCH-REPORT | US2009145800 |
| INTERNATIONAL-SEARCH-REPORT | WO2009143234 |
| OPPOSITION | DE4402038 |
| OPPOSITION | DE9103973U |
| OPPOSITION | EP2336044 |
| OPPOSITION | EP2522593 |
| OPPOSITION | US2003102247 |
| OPPOSITION | US2005284789 |
| OPPOSITION | US2009145800 |
| OPPOSITION | US2013008825 |
| OPPOSITION | US2013306511 |
| OPPOSITION | US5360116 |
| OPPOSITION | US5522506 |
| OPPOSITION | US5932338 |
| OPPOSITION | US6086988 |
| OPPOSITION | US6244442 |
| OPPOSITION | WO2009143234 |
| OPPOSITION | WO8401556 |
| OTHER | US2009188827 |
| OTHER | US2013008825 |
| OTHER | US2013306511 |
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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Nov 10, 2025
Refund of fees
Appeal
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 6, 2025
Nov 3, 2025
(Electronic) Receipt
Appeal
Nov 3, 2025
Nov 3, 2025
Withdrawal of an appeal
Appeal
Oct 29, 2025
(Electronic) Receipt
Appeal
Oct 29, 2025
Oct 29, 2025
Sep 5, 2025
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Sep 1, 2025
(Electronic) Receipt
Appeal
Sep 1, 2025
(Electronic) Receipt
Appeal
Sep 1, 2025
Sep 1, 2025
Notice of appeal
Appeal
Sep 1, 2025
Notice of appeal
Appeal
Jul 1, 2025
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Means of redress
OPPO
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Description
OPPO
May 24, 2024
Description
OPPO
May 24, 2024
Description
OPPO
May 24, 2024
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Decision to grant a European patent
Search/Exam
Mar 15, 2023
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Mar 9, 2023
Non-patent literature filed by a third party
Search/Exam
Mar 9, 2023
Observations by third parties
Search/Exam
Mar 9, 2023
Observations by third parties
Search/Exam
Mar 9, 2023
Patent document filed by a Third party
Search/Exam
Mar 9, 2023
Patent document filed by a Third party
Search/Exam
Mar 9, 2023
Patent document filed by a Third party
Search/Exam
Feb 27, 2023
(Electronic) Receipt
Search/Exam
Feb 27, 2023
English translation of the claims
Search/Exam
Feb 27, 2023
Filing of the translations of the claims
Search/Exam
Feb 27, 2023
French translation of claims
Search/Exam
Feb 27, 2023
Letter accompanying subsequently filed items
Search/Exam
Oct 21, 2022
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Intention to grant (signatures)
Search/Exam
Oct 21, 2022
Text intended for grant (clean copy)
Search/Exam
Oct 21, 2022
Sep 26, 2022
Examination started
Search/Exam
Oct 27, 2021
Sep 8, 2021
Aug 16, 2021
(Electronic) Receipt
Search/Exam
Aug 16, 2021
Aug 16, 2021
Amended claims with annotations
Search/Exam
Aug 16, 2021
Aug 16, 2021
Amended description with annotations
Search/Exam
Aug 16, 2021
Amendments received before examination
Search/Exam
Aug 16, 2021
Priority search results
Search/Exam
Aug 16, 2021
Request for entry into the European phase
Search/Exam
Aug 2, 2021
Jun 10, 2021
Letter which had not been notified
Search/Exam
May 28, 2021
Information on entry into European phase
Search/Exam
Mar 12, 2021
Mar 12, 2021
Notification of the recording of a change
Search/Exam
Aug 11, 2020
Jul 23, 2020
Copy of the international search report
Search/Exam
Jul 23, 2020
Copy of the international search report
Search/Exam
Jul 23, 2020
Published international application - A1
Search/Exam
Mar 11, 2020
ISR: cited documents
PCTISA
Mar 11, 2020
Mar 11, 2020
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Mar 11, 2020
Jan 28, 2020
Jan 27, 2020
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Jan 14, 2020
(Electronic) Receipt
PCTRO
Jan 14, 2020
Abstract
PCTRO
Jan 14, 2020
Claims
PCTRO
Jan 14, 2020
Description
PCTRO
Jan 14, 2020
Jan 14, 2020
Drawings
PCTRO
Jan 14, 2020