The weekly litigation news digest is live. Subscribe now
The patent EP2831088 was granted to UPM Kymmene on Aug 2, 2017. The application was filed on Mar 26, 2013 under application number EP13718603A. 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 |
|---|---|---|---|
| METSA FIBRE | May 2, 2018 | LAINE | ADMISSIBLE |
| STORA ENSO OYJ | Apr 24, 2018 | STEINRUD | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | CN101747651 |
| INTERNATIONAL-SEARCH-REPORT | DE102010019321 |
| INTERNATIONAL-SEARCH-REPORT | WO2010071440 |
| INTERNATIONAL-SEARCH-REPORT | WO2010075306 |
| INTERNATIONAL-SEARCH-REPORT | WO2011154293 |
| INTERNATIONAL-SEARCH-REPORT | WO2012151509 |
| INTERNATIONAL-SEARCH-REPORT | WO2012151524 |
| INTERNATIONAL-SEARCH-REPORT | WO9534604 |
| OPPOSITION | CN102268847 |
| OPPOSITION | US2001034441 |
| OPPOSITION | US2011167713 |
| OPPOSITION | US2011259250 |
| OPPOSITION | US2011302832 |
| OPPOSITION | US5321065 |
| OPPOSITION | US6024307 |
| OPPOSITION | WO9638494 |
| OPPOSITION | WO9747702 |
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
Get instant alerts for new documents
Oct 24, 2025
Oct 24, 2025
Oct 24, 2025
Jul 17, 2025
Mar 7, 2025
Mar 7, 2025
Mar 7, 2025
Mar 7, 2025
Mar 4, 2025
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Means of redress
OPPO
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Nov 8, 2024
Sep 30, 2024
Aug 22, 2024
Aug 22, 2024
Aug 21, 2024
Aug 21, 2024
Aug 16, 2024
Aug 16, 2024
Aug 16, 2024
Aug 15, 2024
Aug 15, 2024
Aug 15, 2024
Aug 15, 2024
Jul 19, 2024
Jul 19, 2024
Jul 16, 2024
Jul 16, 2024
Jul 16, 2024
Feb 6, 2024
Feb 6, 2024
Feb 6, 2024
Feb 6, 2024
Feb 6, 2024
Feb 6, 2024
Feb 6, 2024
Feb 6, 2024
Feb 6, 2024
Apr 28, 2023
Apr 28, 2023
Apr 28, 2023
Apr 28, 2023
Apr 28, 2023
Apr 24, 2023
Apr 24, 2023
Apr 24, 2023
Apr 24, 2023
Apr 24, 2023
Apr 24, 2023
Apr 24, 2023
Apr 24, 2023
Apr 24, 2023
Apr 24, 2023
Apr 24, 2023
Apr 19, 2023
Apr 19, 2023
Apr 13, 2023
Apr 13, 2023
Apr 13, 2023
Apr 13, 2023
Apr 13, 2023
Apr 13, 2023
Dec 13, 2022
Dec 13, 2022
Dec 13, 2022
Dec 13, 2022
Dec 13, 2022
Dec 13, 2022
Dec 13, 2022
Jun 7, 2022
Refund of fees
Appeal
Jun 2, 2022
Jun 2, 2022
Jun 2, 2022
Jun 2, 2022
May 16, 2022
May 16, 2022
May 16, 2022
May 16, 2022
Mar 16, 2022
Mar 16, 2022
Mar 11, 2022
(Electronic) Receipt
Appeal
Mar 11, 2022
Mar 11, 2022
Mar 8, 2022
Mar 8, 2022
Mar 4, 2022
Mar 4, 2022
Mar 3, 2022
(Electronic) Receipt
Appeal
Mar 3, 2022
Mar 3, 2022
Mar 1, 2022
(Electronic) Receipt
Appeal
Mar 1, 2022
Mar 1, 2022
Feb 16, 2022
Feb 16, 2022
Feb 16, 2022
Feb 14, 2022
Feb 14, 2022
Feb 9, 2022
(Electronic) Receipt
Appeal
Feb 9, 2022
Feb 9, 2022
Dec 13, 2021
Advice of delivery
Appeal
Dec 8, 2021
Dec 8, 2021
Dec 8, 2021
Dec 8, 2021
Dec 3, 2021
Nov 23, 2021
May 28, 2020
May 28, 2020
May 27, 2020
May 27, 2020
May 26, 2020
May 26, 2020
May 26, 2020
May 26, 2020
May 26, 2020
May 26, 2020
May 26, 2020
May 26, 2020
May 26, 2020
Reply to appeal
Appeal
May 25, 2020
(Electronic) Receipt
Appeal
May 25, 2020
May 25, 2020
Reply to appeal
Appeal
May 20, 2020
May 20, 2020
May 20, 2020
May 20, 2020
May 20, 2020
May 20, 2020
May 20, 2020
May 20, 2020
May 20, 2020
Reply to appeal
Appeal
Jan 24, 2020
Jan 24, 2020
Jan 20, 2020
(Electronic) Receipt
Appeal
Jan 20, 2020
Jan 20, 2020
Jan 20, 2020
Jan 20, 2020
Jan 20, 2020
Jan 20, 2020
Nov 25, 2019
Nov 25, 2019
Nov 25, 2019
Nov 20, 2019
(Electronic) Receipt
Appeal
Nov 20, 2019
Nov 20, 2019
Notice of appeal
Appeal
Nov 8, 2019
Nov 8, 2019
Oct 1, 2019
Sep 19, 2019
Sep 17, 2019
Sep 16, 2019
Sep 13, 2019
Sep 11, 2019
Sep 11, 2019
Sep 11, 2019
Sep 11, 2019
Sep 11, 2019
Sep 11, 2019
Sep 11, 2019
Sep 11, 2019
Sep 11, 2019
Sep 11, 2019
Means of redress
OPPO
Sep 11, 2019
Sep 11, 2019
Sep 11, 2019
Sep 11, 2019
Sep 11, 2019
Sep 11, 2019
Jul 16, 2019
Jul 4, 2019
Jul 4, 2019
Jul 2, 2019
Jul 2, 2019
Jul 2, 2019
Jul 2, 2019
Jul 1, 2019
Jul 1, 2019
Jul 1, 2019
May 29, 2019
May 29, 2019
May 24, 2019
May 24, 2019
May 24, 2019
May 24, 2019
May 24, 2019
May 24, 2019
May 24, 2019
May 24, 2019
May 24, 2019
May 23, 2019
May 23, 2019
May 20, 2019
May 20, 2019
May 20, 2019
May 20, 2019
May 20, 2019
May 20, 2019
May 20, 2019
May 20, 2019
May 16, 2019
May 16, 2019
May 16, 2019
May 16, 2019
May 14, 2019
May 14, 2019
May 14, 2019
May 14, 2019
May 14, 2019
May 14, 2019
May 14, 2019
May 13, 2019
May 13, 2019
May 13, 2019
May 7, 2019
May 7, 2019
May 7, 2019
Apr 11, 2019
Feb 18, 2019
Feb 18, 2019
Feb 18, 2019
Feb 18, 2019
Feb 12, 2019
Feb 12, 2019
Feb 12, 2019
Feb 7, 2019
Feb 7, 2019
Feb 1, 2019
Jan 31, 2019
Jan 31, 2019
Jan 30, 2019
Jan 25, 2019
Jan 21, 2019
Jan 21, 2019
Jan 21, 2019
Jan 21, 2019
Jan 21, 2019
Jan 21, 2019
Jan 21, 2019
Jan 21, 2019
Sep 28, 2018
Sep 28, 2018
Sep 25, 2018
Sep 25, 2018
Sep 25, 2018
Sep 25, 2018
Sep 25, 2018
Sep 25, 2018
Jun 26, 2018
Jun 26, 2018
Jun 20, 2018
Jun 20, 2018
Jun 14, 2018
Jun 14, 2018
Authorisation
OPPO
Jun 14, 2018
Jun 14, 2018
May 17, 2018
May 17, 2018
May 17, 2018
May 8, 2018
May 2, 2018
May 2, 2018
May 2, 2018
May 2, 2018
May 2, 2018
May 2, 2018
May 2, 2018
May 2, 2018
May 2, 2018
May 2, 2018
May 2, 2018
May 2, 2018
May 2, 2018
May 2, 2018
May 2, 2018
May 2, 2018
May 2, 2018
Apr 30, 2018
Apr 30, 2018
Apr 30, 2018
Apr 30, 2018
Apr 30, 2018
Apr 24, 2018
Apr 24, 2018
Apr 24, 2018
Apr 24, 2018
Apr 24, 2018
Aug 3, 2017
Jul 6, 2017
Decision to grant a European patent
Search/Exam
May 22, 2017
May 22, 2017
May 22, 2017
Intention to grant (signatures)
Search/Exam
May 22, 2017
Text intended for grant (clean copy)
Search/Exam
May 22, 2017
May 19, 2017
May 11, 2017
(Electronic) Receipt
Search/Exam
May 11, 2017
Amended claims with annotations
Search/Exam
May 11, 2017
Claims
Search/Exam
May 11, 2017
French translation of claims
Search/Exam
May 11, 2017
German translation of the claims
Search/Exam
May 11, 2017
Letter accompanying subsequently filed items
Search/Exam
May 11, 2017
Jan 19, 2017
Jan 19, 2017
Jan 19, 2017
Intention to grant (signatures)
Search/Exam
Jan 19, 2017
Text intended for grant (clean copy)
Search/Exam
Jan 19, 2017
Dec 21, 2016
Submission concerning representation
Search/Exam
Nov 30, 2016
(Electronic) Receipt
Search/Exam
Nov 30, 2016
Amended description with annotations
Search/Exam
Nov 30, 2016
Description
Search/Exam
Nov 30, 2016
Letter accompanying subsequently filed items
Search/Exam
Nov 30, 2016
Oct 20, 2016
Annex to the communication
Search/Exam
Oct 20, 2016
Communication from the Examining Division
Search/Exam
Oct 5, 2016
Examination started
Search/Exam
Sep 9, 2015
Submission concerning representation
Search/Exam
May 13, 2015
Refund of fees
Search/Exam
Apr 27, 2015
(Electronic) Receipt
Search/Exam
Apr 27, 2015
Apr 27, 2015
Amended claims with annotations
Search/Exam
Apr 27, 2015
Amendments received before examination
Search/Exam
Apr 27, 2015
Letter accompanying subsequently filed items
Search/Exam
Jan 8, 2015
Nov 5, 2014
Nov 3, 2014
Communication to designated inventor
Search/Exam
Nov 3, 2014
Communication to designated inventor
Search/Exam
Nov 3, 2014
Communication to designated inventor
Search/Exam
Nov 3, 2014
Communication to designated inventor
Search/Exam
Nov 3, 2014
Communication to designated inventor
Search/Exam
Nov 3, 2014
Communication to designated inventor
Search/Exam
Oct 14, 2014
Sep 29, 2014
(Electronic) Receipt
Search/Exam
Sep 29, 2014
Sep 29, 2014
Amended claims with annotations
Search/Exam
Sep 29, 2014
Priority search results
Search/Exam
Sep 29, 2014
Request for entry into the European phase
Search/Exam
Aug 8, 2014
Information on entry into European phase
Search/Exam
Mar 10, 2014
Notification of the recording of a change
Search/Exam
Oct 22, 2013
Oct 3, 2013
Copy of the international search report
Search/Exam
Oct 3, 2013
Published international application - A1
Search/Exam
Jul 18, 2013
Jul 18, 2013
Jul 18, 2013
Apr 24, 2013
Drawings
PCTISA
Mar 26, 2013
Abstract
PCTISA
Mar 26, 2013
Claims
PCTISA
Mar 26, 2013
Description
PCTISA
Mar 26, 2013
Drawings
PCTISA