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The patent EP2890539 was granted to UPM Kymmene on Oct 31, 2018. The application was filed on Aug 28, 2012 under application number EP12883637A. 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 |
|---|---|---|---|
| KRANZLE | Jul 31, 2019 | PFENNING | - |
| STORA ENSO OYJ | Jul 17, 2019 | STEINRUD | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2009065975 |
| DESCRIPTION | US2011144241 |
| INTERNATIONAL-SEARCH-REPORT | GB896117 |
| INTERNATIONAL-SEARCH-REPORT | US2009065975 |
| INTERNATIONAL-SEARCH-REPORT | US2009110654 |
| INTERNATIONAL-SEARCH-REPORT | US2011144241 |
| INTERNATIONAL-SEARCH-REPORT | US2011206931 |
| INTERNATIONAL-SEARCH-REPORT | US5574094 |
| OPPOSITION | JP2006036926 |
| OPPOSITION | US2003228454 |
| OPPOSITION | US2007045456 |
| OPPOSITION | US6743507 |
| OPPOSITION | WO0021743 |
| OPPOSITION | WO2006102543 |
| OPPOSITION | WO2007107527 |
| OPPOSITION | WO2013072547 |
| OPPOSITION | WO2014033352 |
| SEARCH | US2002000683 |
| SEARCH | US2003152793 |
| SEARCH | US2003228454 |
| SEARCH | US2009065975 |
| SEARCH | US2011144241 |
| SEARCH | US5746958 |
| SEARCH | WO2013072547 |
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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Nov 12, 2018
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Decision to grant a European patent
Search/Exam
Sep 17, 2018
(Electronic) Receipt
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Sep 17, 2018
French translation of claims
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Sep 17, 2018
German translation of the claims
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Sep 17, 2018
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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(Electronic) Receipt
Search/Exam
May 16, 2018
Amended claims with annotations
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May 16, 2018
Amended description with annotations
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May 16, 2018
Claims
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May 16, 2018
Description
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May 16, 2018
Letter accompanying subsequently filed items
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May 16, 2018
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Annex to the communication
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Jan 17, 2018
Communication from the Examining Division
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Jan 10, 2018
Dec 18, 2017
(Electronic) Receipt
Search/Exam
Dec 18, 2017
Amended claims with annotations
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Dec 18, 2017
Amended description with annotations
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Dec 18, 2017
Claims
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Dec 18, 2017
Description
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Dec 18, 2017
Letter accompanying subsequently filed items
Search/Exam
Dec 18, 2017
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Intention to grant (signatures)
Search/Exam
Sep 15, 2017
Text intended for grant (clean copy)
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Sep 15, 2017
May 29, 2017
(Electronic) Receipt
Search/Exam
May 29, 2017
Amended description with annotations
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May 29, 2017
Description
Search/Exam
May 29, 2017
Letter accompanying subsequently filed items
Search/Exam
May 29, 2017
May 17, 2017
Annex to the communication
Search/Exam
May 17, 2017
Consultation by telephone/in person
Search/Exam
May 17, 2017
Jan 30, 2017
Annex to the communication
Search/Exam
Jan 30, 2017
Communication from the Examining Division
Search/Exam
Dec 21, 2016
Submission concerning representation
Search/Exam
Nov 3, 2016
(Electronic) Receipt
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Nov 3, 2016
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Amended claims with annotations
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Nov 3, 2016
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Nov 3, 2016
Letter accompanying subsequently filed items
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European search opinion
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Apr 22, 2016
Information on Search Strategy
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Apr 22, 2016
Supplementary European search report
Search/Exam
Sep 9, 2015
Submission concerning representation
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Jun 10, 2015
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Mar 17, 2015
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(Electronic) Receipt
Search/Exam
Mar 12, 2015
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Amended claims with annotations
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Mar 12, 2015
Amendments received before examination
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Mar 12, 2015
Annex
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Annex
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Annex
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Annex
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Mar 12, 2015
Request for entry into the European phase
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Jan 9, 2015
Information on entry into European phase
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Mar 6, 2014
Copy of the international search report
Search/Exam
Mar 6, 2014
Notification of the recording of a change
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Mar 6, 2014
Notification of the recording of a change
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Notification of the recording of a change
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Mar 6, 2014
Notification of the recording of a change
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Mar 6, 2014
Published international application - A1
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