The weekly litigation news digest is live. Subscribe now
The patent EP3783951 was granted to Ledvance on Mar 2, 2022. The application was filed on Aug 18, 2020 under application number EP20191598A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| SCHOPF | Dec 2, 2022 | SAMSON & PARTNER PATENTANWALTE MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | CN109890112 |
| OPPOSITION | EP3884650 |
| OPPOSITION | US2003065762 |
| OPPOSITION | US2007250631 |
| OPPOSITION | US2017331667 |
| OPPOSITION | US2020162385 |
| OPPOSITION | US6119143 |
| OPPOSITION | US8588942 |
| OPPOSITION | US9439068 |
| OPPOSITION | WO2014092899 |
| SEARCH | EP3232621 |
| SEARCH | US2014003233 |
| SEARCH | US9872151 |
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
Sep 27, 2024
Sep 27, 2024
Jun 27, 2024
Jun 27, 2024
Jun 27, 2024
Jun 27, 2024
Jun 27, 2024
Jun 27, 2024
Jun 27, 2024
Jun 27, 2024
Means of redress
OPPO
Jun 27, 2024
Jun 27, 2024
Jun 27, 2024
Jun 27, 2024
Jun 27, 2024
Jun 12, 2024
Apr 17, 2024
Apr 15, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 12, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Oct 19, 2023
Oct 18, 2023
Oct 18, 2023
Oct 18, 2023
Oct 18, 2023
Oct 18, 2023
Oct 18, 2023
Oct 18, 2023
Sep 26, 2023
Jul 4, 2023
Jun 29, 2023
Jun 29, 2023
Jun 29, 2023
Feb 16, 2023
Feb 16, 2023
Feb 16, 2023
Feb 16, 2023
Dec 12, 2022
Dec 8, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Dec 2, 2022
Aug 12, 2022
Aug 2, 2022
Letter which had not been notified
Search/Exam
Jul 18, 2022
Jul 15, 2022
Document concerning representation
Search/Exam
Mar 15, 2022
Feb 3, 2022
Decision to grant a European patent
Search/Exam
Jan 17, 2022
(Electronic) Receipt
Search/Exam
Jan 17, 2022
Filing of the translations of the claims
Search/Exam
Jan 17, 2022
French translation of claims
Search/Exam
Jan 17, 2022
German translation of the claims
Search/Exam
Jan 17, 2022
Letter accompanying subsequently filed items
Search/Exam
Nov 10, 2021
Nov 10, 2021
Nov 10, 2021
Intention to grant (signatures)
Search/Exam
Nov 10, 2021
Text intended for grant (clean copy)
Search/Exam
Nov 10, 2021
May 17, 2021
May 11, 2021
(Electronic) Receipt
Search/Exam
May 11, 2021
Amended claims with annotations
Search/Exam
May 11, 2021
Amended description with annotations
Search/Exam
May 11, 2021
Claims
Search/Exam
May 11, 2021
Description
Search/Exam
May 11, 2021
Letter accompanying subsequently filed items
Search/Exam
May 11, 2021
Apr 9, 2021
Annex to the communication
Search/Exam
Apr 9, 2021
Communication from the Examining Division
Search/Exam
Mar 23, 2021
(Electronic) Receipt
Search/Exam
Mar 23, 2021
Letter accompanying subsequently filed items
Search/Exam
Mar 23, 2021
Mar 1, 2021
Jan 27, 2021
Notification of forthcoming publication
Search/Exam
Jan 26, 2021
Jan 18, 2021
Jan 18, 2021
European search report
Search/Exam
Jan 18, 2021
Information on Search Strategy
Search/Exam
Nov 11, 2020
Communication to designated inventor
Search/Exam
Nov 11, 2020
Communication to designated inventor
Search/Exam
Nov 11, 2020
Communication to designated inventor
Search/Exam
Nov 11, 2020
Communication to designated inventor
Search/Exam
Nov 2, 2020
Nov 2, 2020
Oct 27, 2020
Oct 22, 2020
Sep 25, 2020
Sep 22, 2020
Aug 18, 2020
Abstract
Search/Exam
Aug 18, 2020
Aug 18, 2020
Claims
Search/Exam
Aug 18, 2020
Description
Search/Exam
Aug 18, 2020
Designation of inventor
Search/Exam
Aug 18, 2020
Drawings
Search/Exam
Aug 18, 2020
Request for grant of a European patent
Search/Exam