The weekly litigation news digest is live. Subscribe now
The patent EP3577273 was granted to Ahlstrom Munksj OYJ on Apr 7, 2021. The application was filed on Feb 2, 2018 under application number EP18702298A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 |
|---|---|---|---|
| FELIX SCHOELLER HOLDING | Jan 7, 2022 | COHAUSZ & FLORACK | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP1044822 |
| DESCRIPTION | EP1749134 |
| DESCRIPTION | EP2828092 |
| DESCRIPTION | US2016009114 |
| DESCRIPTION | US8153211 |
| DESCRIPTION | WO2006076725 |
| DESCRIPTION | WO2014068502 |
| DESCRIPTION | WO2016066531 |
| DESCRIPTION | WO2016175824 |
| INTERNATIONAL-SEARCH-REPORT | US2016009114 |
| INTERNATIONAL-SEARCH-REPORT | WO2006076725 |
| INTERNATIONAL-SEARCH-REPORT | WO2014068502 |
| INTERNATIONAL-SEARCH-REPORT | WO2016175824 |
| OPPOSITION | EP2905376 |
| OPPOSITION | US2008090032 |
| OPPOSITION | WO2013135547 |
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
Mar 25, 2025
Refund of fees
Appeal
Mar 20, 2025
Mar 20, 2025
Mar 17, 2025
Mar 13, 2025
(Electronic) Receipt
Appeal
Mar 13, 2025
Mar 13, 2025
Mar 13, 2025
Withdrawal of an appeal
Appeal
Jul 18, 2024
Jul 15, 2024
(Electronic) Receipt
Appeal
Jul 15, 2024
Jul 15, 2024
Reply to appeal
Appeal
Mar 13, 2024
Mar 7, 2024
(Electronic) Receipt
Appeal
Mar 7, 2024
Mar 7, 2024
Mar 7, 2024
Jan 10, 2024
Jan 10, 2024
Jan 5, 2024
(Electronic) Receipt
Appeal
Jan 5, 2024
Jan 5, 2024
Notice of appeal
Appeal
Nov 23, 2023
Nov 14, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Means of redress
OPPO
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Nov 7, 2023
Oct 10, 2023
Sep 29, 2023
Sep 26, 2023
Sep 26, 2023
Sep 26, 2023
Sep 26, 2023
Sep 26, 2023
Aug 18, 2023
Aug 16, 2023
Aug 14, 2023
Aug 14, 2023
Aug 14, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 10, 2023
Aug 7, 2023
Aug 2, 2023
Aug 2, 2023
Aug 2, 2023
Jul 4, 2023
Jun 28, 2023
Jun 28, 2023
Jun 28, 2023
Jun 28, 2023
Jun 28, 2023
Jun 21, 2023
Jun 14, 2023
Jun 14, 2023
Jun 14, 2023
Jun 14, 2023
Jun 14, 2023
Feb 15, 2023
Feb 2, 2023
Jan 26, 2023
Jan 26, 2023
Jan 26, 2023
Jan 26, 2023
Jan 26, 2023
Jan 26, 2023
Oct 24, 2022
Oct 19, 2022
Oct 4, 2022
Oct 4, 2022
Oct 4, 2022
Oct 4, 2022
Oct 4, 2022
Jun 3, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
May 30, 2022
Mar 18, 2022
Mar 18, 2022
Mar 18, 2022
Mar 2, 2022
Mar 2, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Feb 25, 2022
Jan 19, 2022
Jan 19, 2022
Jan 19, 2022
Refund of fees
Search/Exam
Jan 12, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Jan 7, 2022
Apr 20, 2021
Mar 12, 2021
Decision to grant a European patent
Search/Exam
Jan 22, 2021
Jan 14, 2021
(Electronic) Receipt
Search/Exam
Jan 14, 2021
English translation of the claims
Search/Exam
Jan 14, 2021
Filing of the translations of the claims
Search/Exam
Jan 14, 2021
German translation of the claims
Search/Exam
Oct 6, 2020
Oct 6, 2020
Oct 6, 2020
Intention to grant (signatures)
Search/Exam
Oct 6, 2020
Text intended for grant (clean copy)
Search/Exam
Oct 6, 2020
Jul 7, 2020
(Electronic) Receipt
Search/Exam
Jul 7, 2020
Amended description with annotations
Search/Exam
Jul 7, 2020
Description
Search/Exam
Jul 7, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 7, 2020
Jun 25, 2020
Annex to the communication
Search/Exam
Jun 25, 2020
Communication from the Examining Division
Search/Exam
Apr 30, 2020
(Electronic) Receipt
Search/Exam
Apr 30, 2020
Amended claims with annotations
Search/Exam
Apr 30, 2020
Claims
Search/Exam
Apr 30, 2020
Letter accompanying subsequently filed items
Search/Exam
Apr 30, 2020
Apr 24, 2020
Apr 20, 2020
(Electronic) Receipt
Search/Exam
Apr 20, 2020
Letter accompanying subsequently filed items
Search/Exam
Apr 20, 2020
Feb 20, 2020
Annex to the communication
Search/Exam
Feb 20, 2020
Communication from the Examining Division
Search/Exam
Feb 17, 2020
Examination started
Search/Exam
Nov 13, 2019
Sep 11, 2019
Communication to designated inventor
Search/Exam
Sep 6, 2019
Priority search results copy provided by EPO
Search/Exam
Aug 19, 2019
Jul 31, 2019
(Electronic) Receipt
Search/Exam
Jul 31, 2019
Jul 31, 2019
Amended claims with annotations
Search/Exam
Jul 31, 2019
Request for entry into the European phase
Search/Exam
Jun 14, 2019
Information on entry into European phase
Search/Exam
Aug 29, 2018
Aug 9, 2018
Copy of the international search report
Search/Exam
Aug 9, 2018
Copy of the international search report
Search/Exam
Aug 9, 2018
Published international application - A1
Search/Exam
Apr 4, 2018
(Electronic) Receipt
PCTRO
Apr 4, 2018
Apr 4, 2018
Apr 4, 2018
Mar 19, 2018
Mar 19, 2018
Mar 19, 2018
Feb 13, 2018
Feb 13, 2018
Feb 2, 2018
(Electronic) Receipt
PCTRO
Feb 2, 2018
Abstract
PCTRO
Feb 2, 2018
Claims
PCTRO
Feb 2, 2018
Description
PCTRO
Feb 2, 2018
Feb 2, 2018
Drawings
PCTRO
Feb 2, 2018
Feb 2, 2018
Feb 2, 2018