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The patent EP3821074 was granted to Mitsubishi Hitec Paper Europe on Jan 11, 2023. The application was filed on Jul 10, 2019 under application number EP19739964A. The patent is currently recorded with a legal status of "Revoked".

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 | Oct 11, 2023 | KRANSELL & WENNBORG KB | ADMISSIBLE |
| KOEHLER INNOVATION & TECHNOLOGY | Oct 5, 2023 | PATENTSHIP PATENTANWALTSGESELLSCHAFT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE102014119572 |
| DESCRIPTION | US2007000971 |
| INTERNATIONAL-SEARCH-REPORT | WO0024967 |
| INTERNATIONAL-SEARCH-REPORT | WO2010042162 |
| INTERNATIONAL-SEARCH-REPORT | WO2019121733 |
| INTERNATIONAL-SEARCH-REPORT | WO9426513 |
| OPPOSITION | CA2940370 |
| OPPOSITION | DE102010000695 |
| OPPOSITION | DE102017131277 |
| OPPOSITION | DE1569337 |
| OPPOSITION | DE4445193 |
| OPPOSITION | EP0393451 |
| OPPOSITION | EP0863255 |
| OPPOSITION | EP2748255 |
| OPPOSITION | JP2001192510 |
| OPPOSITION | JP2003154609 |
| OPPOSITION | JP2009057676 |
| OPPOSITION | JPH0782691 |
| OPPOSITION | KR20030074995 |
| OPPOSITION | US2003207089 |
| OPPOSITION | US2007009715 |
| OPPOSITION | US2009022978 |
| OPPOSITION | US2016230007 |
| OPPOSITION | US2016244914 |
| OPPOSITION | US2016348318 |
| OPPOSITION | WO2010042162 |
| OPPOSITION | WO2011110498 |
| OPPOSITION | WO2011123723 |
| OPPOSITION | WO2016000829 |
| OPPOSITION | WO2017170462 |
| OPPOSITION | WO2018081764 |
| OPPOSITION | WO2019121733 |
| OPPOSITION | WO9426513 |
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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Jan 24, 2023
Dec 15, 2022
Decision to grant a European patent
Search/Exam
Dec 5, 2022
(Electronic) Receipt
Search/Exam
Dec 5, 2022
English translation of the claims
Search/Exam
Dec 5, 2022
Filing of the translations of the claims
Search/Exam
Dec 5, 2022
French translation of claims
Search/Exam
Dec 5, 2022
Letter accompanying subsequently filed items
Search/Exam
Aug 4, 2022
Aug 4, 2022
Aug 4, 2022
Intention to grant (signatures)
Search/Exam
Aug 4, 2022
Text intended for grant (clean copy)
Search/Exam
Aug 4, 2022
Mar 30, 2022
(Electronic) Receipt
Search/Exam
Mar 30, 2022
Amended description with annotations
Search/Exam
Mar 30, 2022
Description
Search/Exam
Mar 30, 2022
Letter accompanying subsequently filed items
Search/Exam
Mar 30, 2022
Dec 8, 2021
Annex to the communication
Search/Exam
Dec 8, 2021
Communication from the Examining Division
Search/Exam
Dec 1, 2021
Examination started
Search/Exam
Apr 21, 2021
Feb 24, 2021
Feb 22, 2021
Communication to designated inventor
Search/Exam
Feb 22, 2021
Communication to designated inventor
Search/Exam
Feb 22, 2021
Communication to designated inventor
Search/Exam
Feb 22, 2021
Communication to designated inventor
Search/Exam
Jan 18, 2021
Nov 30, 2020
(Electronic) Receipt
Search/Exam
Nov 30, 2020
Priority search results
Search/Exam
Nov 30, 2020
Request for entry into the European phase
Search/Exam
Nov 20, 2020
Information on entry into European phase
Search/Exam
Sep 10, 2020
Sep 10, 2020
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Jul 31, 2020
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Jul 2, 2020
Written opinion
PCT2
Jul 2, 2020
Jul 2, 2020
Jun 11, 2020
Notification of election of EPO
Search/Exam
Jun 10, 2020
Jun 10, 2020
Jun 10, 2020
May 26, 2020
May 20, 2020
May 13, 2020
May 13, 2020
PCT demand form
PCT2
May 13, 2020
May 13, 2020
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Jan 16, 2020
Copy of the international search report
Search/Exam
Jan 16, 2020
Copy of the international search report
Search/Exam
Jan 16, 2020
Published international application - A1
Search/Exam
Jul 26, 2019
Jul 23, 2019
Jul 10, 2019
(Electronic) Receipt
PCTRO
Jul 10, 2019
Abstract
PCTRO
Jul 10, 2019
Claims
PCTRO
Jul 10, 2019
Description
PCTRO
Jul 10, 2019
Jul 10, 2019