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The patent EP4259449 was granted to Appvion on Jun 19, 2024. The application was filed on Dec 10, 2020 under application number EP20838767A. 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 |
|---|---|---|---|
| KOEHLER INNOVATION & TECHNOLOGY | Mar 11, 2025 | PATENTSHIP PATENTANWALTSGESELLSCHAFT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US3539375 |
| DESCRIPTION | US3674535 |
| DESCRIPTION | US3746675 |
| DESCRIPTION | US4151748 |
| DESCRIPTION | US4181771 |
| DESCRIPTION | US4246318 |
| DESCRIPTION | US4470057 |
| DESCRIPTION | US4531140 |
| DESCRIPTION | US4794102 |
| DESCRIPTION | US5098882 |
| DESCRIPTION | US5955398 |
| DESCRIPTION | US6835691 |
| DESCRIPTION | US6921740 |
| INTERNATIONAL-SEARCH-REPORT | EP1116713 |
| INTERNATIONAL-SEARCH-REPORT | JP2016068418 |
| INTERNATIONAL-SEARCH-REPORT | JPH082112 |
| OPPOSITION | DE102004004204 |
| OPPOSITION | EP1116713 |
| OPPOSITION | EP1681174 |
| OPPOSITION | EP2033799 |
| OPPOSITION | EP2033800 |
| OPPOSITION | EP3395583 |
| OPPOSITION | EP3636446 |
| OPPOSITION | JP2002187364 |
| OPPOSITION | JP2002283744 |
| OPPOSITION | JP2004223871 |
| OPPOSITION | JP2004255842 |
| OPPOSITION | JP2005330291 |
| OPPOSITION | JP2006104219 |
| OPPOSITION | JP2006143740 |
| OPPOSITION | JP2006143741 |
| OPPOSITION | JP2008194986 |
| OPPOSITION | JP2013237234 |
| OPPOSITION | JP2016068418 |
| OPPOSITION | JP2017081107 |
| OPPOSITION | JP2018065338 |
| OPPOSITION | JP2019084758 |
| OPPOSITION | JP2019130879 |
| OPPOSITION | JPH082112 |
| OPPOSITION | US2001044553 |
| OPPOSITION | US2016031254 |
| OPPOSITION | WO0014058 |
| OPPOSITION | WO2015181291 |
| OPPOSITION | WO2016150428 |
| OPPOSITION | WO2018015178 |
| OPPOSITION | WO2018215287 |
| OPPOSITION | WO2020039601 |
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.
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Description
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Decision to grant a European patent
Search/Exam
May 21, 2024
(Electronic) Receipt
Search/Exam
May 21, 2024
Filing of the translations of the claims
Search/Exam
May 21, 2024
German translation of the claims
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May 21, 2024
Letter accompanying subsequently filed items
Search/Exam
May 13, 2024
(Electronic) Receipt
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May 13, 2024
Filing of the translations of the claims
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May 13, 2024
French translation of claims
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May 13, 2024
German translation of the claims
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May 13, 2024
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Jan 26, 2024
Text intended for grant (clean copy)
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Jan 12, 2024
Examination started
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Oct 26, 2023
(Electronic) Receipt
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Oct 26, 2023
Letter accompanying subsequently filed items
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Sep 20, 2023
Aug 23, 2023
(Electronic) Receipt
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Aug 23, 2023
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Matter concerning the application
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Aug 18, 2023
(Electronic) Receipt
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Aug 18, 2023
Letter accompanying subsequently filed items
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Aug 18, 2023
Matter concerning the application
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(Electronic) Receipt
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Jun 21, 2023
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Amended claims with annotations
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Jun 21, 2023
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Amended description with annotations
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Jun 21, 2023
Amendments received before examination
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Jun 21, 2023
Request for entry into the European phase
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Jun 19, 2023
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May 30, 2023
Letter which had not been notified
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Apr 21, 2023
Information on entry into European phase
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Nov 24, 2022
Notification of election of EPO
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PCT demand form
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Copy of the international search report
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Jun 16, 2022
Published international application - A1
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Aug 12, 2021
ISR: cited documents
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Abstract
PCTISA
Jan 9, 2021
Claims
PCTISA
Jan 9, 2021
Description
PCTISA
Jan 9, 2021
Drawings
PCTISA
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