The weekly litigation news digest is live. Subscribe now
The patent EP3231913 was granted to Changzhou Wujin Wuyang Textile Machinery on Sep 4, 2019. The application was filed on Apr 15, 2015 under application number EP15866522A. 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 |
|---|---|---|---|
| KARL MAYER R&D | May 27, 2020 | KEIL & SCHAAFHAUSEN PATENTANWALTE PARTGMBB | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | CN101255633 |
| INTERNATIONAL-SEARCH-REPORT | CN101285231 |
| INTERNATIONAL-SEARCH-REPORT | CN104452079 |
| INTERNATIONAL-SEARCH-REPORT | CN202359313U |
| INTERNATIONAL-SEARCH-REPORT | CN2861212Y |
| INTERNATIONAL-SEARCH-REPORT | US3890807 |
| OPPOSITION | CN101255633 |
| OPPOSITION | CN2861212Y |
| SEARCH | CN101255633 |
| SEARCH | CN102505328 |
| SEARCH | CN2861212Y |
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 13, 2023
Mar 13, 2023
Mar 8, 2023
Nov 28, 2022
Nov 25, 2022
Nov 24, 2022
Nov 24, 2022
Nov 24, 2022
Nov 24, 2022
Nov 24, 2022
Nov 24, 2022
Means of redress
OPPO
Nov 24, 2022
Nov 24, 2022
Nov 24, 2022
Nov 24, 2022
Nov 24, 2022
Nov 24, 2022
Nov 24, 2022
Nov 24, 2022
Nov 24, 2022
Nov 24, 2022
Oct 27, 2022
Aug 31, 2022
Aug 26, 2022
Aug 26, 2022
Aug 26, 2022
Aug 26, 2022
Aug 23, 2022
Aug 23, 2022
Aug 23, 2022
Aug 23, 2022
Aug 23, 2022
Aug 23, 2022
Aug 23, 2022
Aug 23, 2022
Aug 23, 2022
Aug 23, 2022
Aug 23, 2022
Aug 23, 2022
Aug 23, 2022
Aug 23, 2022
Aug 23, 2022
Jul 22, 2022
Jul 19, 2022
Jul 19, 2022
Jul 19, 2022
Jul 14, 2022
Jul 7, 2022
Jul 7, 2022
Apr 26, 2022
Apr 26, 2022
Apr 22, 2022
Apr 22, 2022
Apr 22, 2022
Apr 22, 2022
Apr 22, 2022
Dec 31, 2021
Document concerning representation
Search/Exam
Dec 14, 2021
Dec 14, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 9, 2021
Dec 2, 2021
Dec 2, 2021
Nov 23, 2021
Nov 22, 2021
Nov 19, 2021
Nov 19, 2021
Nov 19, 2021
Nov 19, 2021
Nov 19, 2021
Sep 22, 2021
Sep 15, 2021
Sep 10, 2021
Sep 10, 2021
Sep 10, 2021
May 17, 2021
May 17, 2021
May 17, 2021
May 17, 2021
May 17, 2021
Feb 22, 2021
Feb 17, 2021
Feb 17, 2021
Feb 17, 2021
Oct 14, 2020
Oct 9, 2020
Oct 9, 2020
Oct 9, 2020
Oct 9, 2020
Oct 9, 2020
Jun 19, 2020
Jun 19, 2020
Jun 2, 2020
May 27, 2020
May 27, 2020
May 27, 2020
May 27, 2020
May 27, 2020
May 27, 2020
May 27, 2020
May 27, 2020
May 27, 2020
May 27, 2020
May 27, 2020
May 27, 2020
May 27, 2020
May 27, 2020
May 27, 2020
May 27, 2020
Jan 13, 2020
Document concerning representation
Search/Exam
Sep 16, 2019
Aug 8, 2019
Decision to grant a European patent
Search/Exam
Jul 26, 2019
(Electronic) Receipt
Search/Exam
Jul 26, 2019
Filing of the translations of the claims
Search/Exam
Jul 26, 2019
French translation of claims
Search/Exam
Jul 26, 2019
German translation of the claims
Search/Exam
Jul 26, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 8, 2019
Apr 8, 2019
Apr 8, 2019
Intention to grant (signatures)
Search/Exam
Apr 8, 2019
Text intended for grant (clean copy)
Search/Exam
Apr 8, 2019
Apr 4, 2019
(Electronic) Receipt
Search/Exam
Apr 4, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 6, 2019
Examination started
Search/Exam
Dec 21, 2018
(Electronic) Receipt
Search/Exam
Dec 21, 2018
Priority search results
Search/Exam
Dec 21, 2018
Nov 28, 2018
Nov 19, 2018
(Electronic) Receipt
Search/Exam
Nov 19, 2018
Nov 19, 2018
Amended claims with annotations
Search/Exam
Nov 19, 2018
Nov 19, 2018
Amended description with annotations
Search/Exam
Nov 19, 2018
Amendments received before examination
Search/Exam
Nov 19, 2018
Letter accompanying subsequently filed items
Search/Exam
Jun 6, 2018
May 18, 2018
May 18, 2018
European search opinion
Search/Exam
May 18, 2018
Information on Search Strategy
Search/Exam
May 18, 2018
Supplementary European search report
Search/Exam
May 2, 2018
Search started
Search/Exam
Mar 5, 2018
(Electronic) Receipt
Search/Exam
Mar 5, 2018
Letter accompanying subsequently filed items
Search/Exam
Sep 20, 2017
Notification of forthcoming publication
Search/Exam
Jul 18, 2017
Jul 14, 2017
Communication to designated inventor
Search/Exam
Jul 14, 2017
Communication to designated inventor
Search/Exam
Jul 14, 2017
Communication to designated inventor
Search/Exam
Jul 14, 2017
Communication to designated inventor
Search/Exam
Jul 14, 2017
Communication to designated inventor
Search/Exam
Jun 27, 2017
Jun 27, 2017
Apr 21, 2017
Information on entry into European phase
Search/Exam
Apr 19, 2017
(Electronic) Receipt
Search/Exam
Apr 19, 2017
Abstract
Search/Exam
Apr 19, 2017
Claims
Search/Exam
Apr 19, 2017
Description
Search/Exam
Apr 19, 2017
Drawings
Search/Exam
Apr 19, 2017
Request for entry into the European phase
Search/Exam
Jul 5, 2016
Jun 16, 2016
Copy of the international search report
Search/Exam
Jun 16, 2016
Jun 16, 2016
International publication pamphlet
Search/Exam