The weekly litigation news digest is live. Subscribe now
The patent EP3438301 was granted to Uacj on Sep 17, 2025. The application was filed on Mar 24, 2017 under application number EP17774741A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 |
|---|---|---|---|
| SPEIRA | Feb 6, 2023 | COHAUSZ & FLORACK | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | JP2011195892 |
| INTERNATIONAL-SEARCH-REPORT | JP2012224923 |
| INTERNATIONAL-SEARCH-REPORT | WO2015104760 |
| OPPOSITION | JP2002038231 |
| OPPOSITION | JP2012087401 |
| OPPOSITION | JP2014208905 |
| OPPOSITION | JPH08319531 |
| OPPOSITION | JPH1088266 |
| OPPOSITION | JPS60251243 |
| OPPOSITION | WO03089237 |
| OPPOSITION | WO2007042206 |
| OPPOSITION | WO2016015974 |
| SEARCH | EP2248924 |
| SEARCH | EP2431121 |
| SEARCH | WO2008155067 |
| SEARCH | WO2016015917 |
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
Aug 21, 2025
Aug 21, 2025
Aug 12, 2025
Aug 12, 2025
Aug 12, 2025
Aug 5, 2025
Jul 23, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Jul 10, 2025
Apr 23, 2025
Apr 23, 2025
Apr 23, 2025
Apr 10, 2025
Jan 7, 2025
Jan 7, 2025
Jan 7, 2025
Jan 7, 2025
Jan 7, 2025
Jan 7, 2025
Jan 7, 2025
Jan 7, 2025
Means of redress
OPPO
Jan 7, 2025
Jan 7, 2025
Jan 7, 2025
Jan 7, 2025
Jan 7, 2025
Jan 7, 2025
Jan 7, 2025
Jan 2, 2025
Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Oct 22, 2024
Oct 21, 2024
Oct 21, 2024
Oct 21, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 16, 2024
Oct 15, 2024
Oct 15, 2024
Oct 15, 2024
Oct 15, 2024
Oct 15, 2024
Oct 15, 2024
Oct 15, 2024
Sep 27, 2024
Sep 25, 2024
Sep 25, 2024
Sep 25, 2024
Sep 25, 2024
Sep 25, 2024
Sep 25, 2024
Sep 25, 2024
Sep 25, 2024
Sep 25, 2024
Sep 12, 2024
Sep 12, 2024
Sep 12, 2024
Sep 12, 2024
Sep 12, 2024
Sep 12, 2024
Sep 5, 2024
Aug 30, 2024
Aug 30, 2024
Aug 28, 2024
Aug 28, 2024
Aug 28, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Description
OPPO
Aug 22, 2024
Description
OPPO
Aug 22, 2024
Description
OPPO
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Feb 9, 2024
Feb 9, 2024
Feb 9, 2024
Feb 9, 2024
Feb 9, 2024
Feb 9, 2024
Feb 9, 2024
Jun 29, 2023
Jun 27, 2023
Jun 27, 2023
Jun 27, 2023
Jun 27, 2023
Jun 27, 2023
Jun 27, 2023
Feb 17, 2023
Feb 17, 2023
Feb 10, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
Feb 6, 2023
May 17, 2022
Apr 7, 2022
Decision to grant a European patent
Search/Exam
Feb 24, 2022
(Electronic) Receipt
Search/Exam
Feb 24, 2022
Filing of the translations of the claims
Search/Exam
Feb 24, 2022
French translation of claims
Search/Exam
Feb 24, 2022
German translation of the claims
Search/Exam
Feb 24, 2022
Letter accompanying subsequently filed items
Search/Exam
Oct 29, 2021
Oct 29, 2021
Oct 29, 2021
Intention to grant (signatures)
Search/Exam
Oct 29, 2021
Text intended for grant (clean copy)
Search/Exam
Oct 29, 2021
Sep 21, 2021
Examination started
Search/Exam
Jan 21, 2021
Document concerning representation
Search/Exam
Jan 21, 2021
Document concerning representation
Search/Exam
Jan 21, 2021
Letter accompanying subsequently filed items
Search/Exam
Jun 16, 2020
(Electronic) Receipt
Search/Exam
Jun 16, 2020
Jun 16, 2020
Amended claims with annotations
Search/Exam
Jun 16, 2020
Amendments received before examination
Search/Exam
Jun 16, 2020
Letter accompanying subsequently filed items
Search/Exam
Dec 17, 2019
Nov 29, 2019
Nov 29, 2019
European search opinion
Search/Exam
Nov 29, 2019
Information on Search Strategy
Search/Exam
Nov 29, 2019
Information on Search Strategy
Search/Exam
Nov 29, 2019
Supplementary European search report
Search/Exam
Nov 29, 2019
Supplementary European search report
Search/Exam
Oct 22, 2019
Search started
Search/Exam
Jan 9, 2019
Notification of forthcoming publication
Search/Exam
Nov 13, 2018
Nov 5, 2018
Communication to designated inventor
Search/Exam
Nov 5, 2018
Communication to designated inventor
Search/Exam
Oct 16, 2018
Oct 16, 2018
Oct 15, 2018
(Electronic) Receipt
Search/Exam
Oct 15, 2018
Abstract
Search/Exam
Oct 15, 2018
Claims
Search/Exam
Oct 15, 2018
Oct 15, 2018
Description
Search/Exam
Oct 15, 2018
Drawings
Search/Exam
Oct 15, 2018
Request for entry into the European phase
Search/Exam
Oct 15, 2018
Submission concerning representation
Search/Exam
Oct 15, 2018
Aug 10, 2018
Information on entry into European phase
Search/Exam
Oct 24, 2017
Oct 5, 2017
Copy of the international search report
Search/Exam
Oct 5, 2017
Oct 5, 2017
International publication pamphlet
Search/Exam