The weekly litigation news digest is live. Subscribe now
The patent EP3803525 was granted to Wrtsil SAM Electronics on Apr 5, 2023. The application was filed on Jun 1, 2018 under application number EP18733454A. 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 |
|---|---|---|---|
| KONGSBERG MARITIME | Jan 5, 2024 | AWA NORWAY | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | EP3214523 |
| INTERNATIONAL-SEARCH-REPORT | US2015089427 |
| INTERNATIONAL-SEARCH-REPORT | WO2016145398 |
| OPPOSITION | EP2803525 |
| OPPOSITION | EP3214523 |
| OPPOSITION | NO20141489 |
| OPPOSITION | US2015089427 |
| OPPOSITION | WO2010077554 |
| OPPOSITION | WO2016145398 |
| OPPOSITION | WO2017129863 |
| OPPOSITION | WO2019231464 |
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
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Means of redress
OPPO
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Nov 17, 2025
Oct 15, 2025
Oct 13, 2025
Oct 10, 2025
Oct 10, 2025
Oct 10, 2025
Oct 10, 2025
Oct 10, 2025
Oct 8, 2025
Oct 6, 2025
Oct 6, 2025
Oct 6, 2025
Sep 24, 2025
Sep 24, 2025
Sep 24, 2025
Aug 18, 2025
Aug 14, 2025
Aug 14, 2025
Aug 14, 2025
Aug 14, 2025
Aug 14, 2025
Aug 14, 2025
Aug 12, 2025
Aug 11, 2025
Aug 11, 2025
Aug 11, 2025
Jan 27, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Jan 22, 2025
Nov 11, 2024
Nov 11, 2024
Nov 11, 2024
Nov 11, 2024
Oct 25, 2024
Oct 25, 2024
Oct 2, 2024
Sep 27, 2024
Sep 27, 2024
Sep 27, 2024
Sep 27, 2024
Sep 27, 2024
Aug 30, 2024
Aug 30, 2024
Aug 30, 2024
Aug 30, 2024
Jul 10, 2024
Jul 4, 2024
Jul 4, 2024
Jul 4, 2024
Jul 4, 2024
Jul 4, 2024
Jul 4, 2024
Jul 4, 2024
May 24, 2024
May 17, 2024
May 17, 2024
May 17, 2024
May 17, 2024
May 17, 2024
May 17, 2024
May 17, 2024
May 17, 2024
May 17, 2024
Apr 3, 2024
Mar 27, 2024
Mar 27, 2024
Mar 27, 2024
Mar 22, 2024
Mar 22, 2024
Mar 22, 2024
Mar 22, 2024
Mar 18, 2024
Mar 18, 2024
Mar 18, 2024
Authorisation
OPPO
Mar 18, 2024
Mar 18, 2024
Mar 18, 2024
Jan 19, 2024
Jan 19, 2024
Jan 11, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Jan 5, 2024
Apr 18, 2023
Mar 10, 2023
Decision to grant a European patent
Search/Exam
Feb 23, 2023
(Electronic) Receipt
Search/Exam
Feb 23, 2023
Filing of the translations of the claims
Search/Exam
Feb 23, 2023
French translation of claims
Search/Exam
Feb 23, 2023
German translation of the claims
Search/Exam
Feb 23, 2023
Letter accompanying subsequently filed items
Search/Exam
Nov 2, 2022
Nov 2, 2022
Nov 2, 2022
Nov 2, 2022
Intention to grant (signatures)
Search/Exam
Nov 2, 2022
Text intended for grant (clean copy)
Search/Exam
Nov 2, 2022
Jun 23, 2022
(Electronic) Receipt
Search/Exam
Jun 23, 2022
Amended claims with annotations
Search/Exam
Jun 23, 2022
Amended description with annotations
Search/Exam
Jun 23, 2022
Claims
Search/Exam
Jun 23, 2022
Description
Search/Exam
Jun 23, 2022
Letter accompanying subsequently filed items
Search/Exam
Jun 23, 2022
May 4, 2022
Apr 29, 2022
(Electronic) Receipt
Search/Exam
Apr 29, 2022
Letter accompanying subsequently filed items
Search/Exam
Apr 29, 2022
Mar 31, 2022
Document concerning representation
Search/Exam
Jan 11, 2022
Annex to the communication
Search/Exam
Jan 11, 2022
Communication from the Examining Division
Search/Exam
Jan 5, 2022
Examination started
Search/Exam
Mar 17, 2021
Jan 25, 2021
Change to the inventor details
Search/Exam
Jan 22, 2021
Jan 20, 2021
Communication to designated inventor
Search/Exam
Jan 20, 2021
Communication to designated inventor
Search/Exam
Dec 22, 2020
(Electronic) Receipt
Search/Exam
Dec 22, 2020
Dec 22, 2020
Amended claims with annotations
Search/Exam
Dec 22, 2020
Dec 22, 2020
Amended description with annotations
Search/Exam
Dec 22, 2020
Letter concerning the inventor
Search/Exam
Dec 22, 2020
Request for entry into the European phase
Search/Exam
Dec 14, 2020
Oct 9, 2020
Information on entry into European phase
Search/Exam
Dec 5, 2019
Copy of the international search report
Search/Exam
Dec 5, 2019
Published international application - A1
Search/Exam
Feb 18, 2019
ISR: cited documents
PCTISA
Feb 15, 2019
Feb 15, 2019
Feb 15, 2019
Jul 9, 2018
Jun 18, 2018
Abstract
PCTISA
Jun 18, 2018
Annex
PCTISA
Jun 18, 2018
Claims
PCTISA
Jun 18, 2018
Description
PCTISA
Jun 18, 2018
Drawings
PCTISA
Jun 18, 2018
Jun 18, 2018
Jun 18, 2018
Jun 18, 2018