The weekly litigation news digest is live. Subscribe now
The patent EP3882581 was granted to Ishida on Apr 23, 2025. The application was filed on Mar 16, 2021 under application number EP21162905A. 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 |
|---|---|---|---|
| BIZERBA | Aug 2, 2023 | MANITZ FINSTERWALD PATENT UND RECHTSANWALTSPARTNERSCHAFT MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2010091325 |
| OPPOSITION | DE102008064163 |
| OPPOSITION | DE10353414 |
| OPPOSITION | EP2060884 |
| OPPOSITION | JP2008116393 |
| OPPOSITION | JP2010091325 |
| OPPOSITION | JP2010169511 |
| OPPOSITION | WO2018001886 |
| SEARCH | JP2008116393 |
| SEARCH | JP2010091325 |
| SEARCH | JP2010169511 |
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 27, 2025
Mar 27, 2025
Mar 19, 2025
Mar 19, 2025
Mar 19, 2025
Mar 19, 2025
Mar 19, 2025
Mar 4, 2025
Mar 4, 2025
Feb 27, 2025
Nov 11, 2024
Nov 11, 2024
Nov 11, 2024
Nov 11, 2024
Nov 11, 2024
Nov 11, 2024
Nov 11, 2024
Nov 11, 2024
Nov 11, 2024
Means of redress
OPPO
Nov 11, 2024
Nov 11, 2024
Nov 11, 2024
Nov 11, 2024
Nov 11, 2024
Nov 11, 2024
Nov 11, 2024
Oct 18, 2024
Oct 7, 2024
Oct 4, 2024
Oct 4, 2024
Oct 4, 2024
Oct 4, 2024
Oct 4, 2024
Oct 4, 2024
Oct 4, 2024
Oct 4, 2024
Oct 4, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Aug 20, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Description
OPPO
Aug 14, 2024
Description
OPPO
Aug 14, 2024
Description
OPPO
Aug 14, 2024
Description
OPPO
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 14, 2024
Aug 9, 2024
Aug 9, 2024
Aug 9, 2024
Aug 9, 2024
Mar 25, 2024
Mar 25, 2024
Mar 25, 2024
Mar 25, 2024
Mar 25, 2024
Mar 25, 2024
Jan 5, 2024
Dec 27, 2023
Dec 27, 2023
Dec 27, 2023
Dec 27, 2023
Dec 27, 2023
Dec 27, 2023
Dec 27, 2023
Dec 27, 2023
Dec 27, 2023
Dec 27, 2023
Dec 27, 2023
Aug 18, 2023
Aug 18, 2023
Aug 8, 2023
Aug 2, 2023
Aug 2, 2023
Aug 2, 2023
Aug 2, 2023
Aug 2, 2023
Aug 2, 2023
Aug 2, 2023
Aug 2, 2023
Aug 2, 2023
Aug 2, 2023
Aug 2, 2023
Aug 2, 2023
Aug 2, 2023
Aug 2, 2023
Nov 15, 2022
Oct 7, 2022
Decision to grant a European patent
Search/Exam
Sep 27, 2022
(Electronic) Receipt
Search/Exam
Sep 27, 2022
Filing of the translations of the claims
Search/Exam
Sep 27, 2022
French translation of claims
Search/Exam
Sep 27, 2022
German translation of the claims
Search/Exam
Sep 27, 2022
Letter accompanying subsequently filed items
Search/Exam
Jun 20, 2022
Jun 20, 2022
Jun 20, 2022
Intention to grant (signatures)
Search/Exam
Jun 20, 2022
Text intended for grant (clean copy)
Search/Exam
Jun 20, 2022
May 23, 2022
Examination started
Search/Exam
Feb 18, 2022
(Electronic) Receipt
Search/Exam
Feb 18, 2022
Feb 18, 2022
Amended claims with annotations
Search/Exam
Feb 18, 2022
Feb 18, 2022
Amended description with annotations
Search/Exam
Feb 18, 2022
Amendments received before examination
Search/Exam
Feb 18, 2022
Letter accompanying subsequently filed items
Search/Exam
Sep 27, 2021
Aug 25, 2021
Notification of forthcoming publication
Search/Exam
Jul 28, 2021
Jul 28, 2021
Jul 28, 2021
Jul 28, 2021
Jul 28, 2021
European search opinion
Search/Exam
Jul 28, 2021
European search report
Search/Exam
Jul 28, 2021
Information on Search Strategy
Search/Exam
Jul 13, 2021
Search started
Search/Exam
Mar 19, 2021
Mar 16, 2021
Abstract
Search/Exam
Mar 16, 2021
Mar 16, 2021
Claims
Search/Exam
Mar 16, 2021
Description
Search/Exam
Mar 16, 2021
Designation of inventor
Search/Exam
Mar 16, 2021
Drawings
Search/Exam
Mar 16, 2021
Request for grant of a European patent
Search/Exam