The weekly litigation news digest is live. Subscribe now
The patent EP3348616 was granted to Mitsubishi Chemical on Jan 19, 2022. The application was filed on Aug 26, 2016 under application number EP16844197A. 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 |
|---|---|---|---|
| BROMINE COMPOUNDS | Oct 18, 2022 | RENTSCH PARTNER | WITHDRAWN |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | JP2005154570 |
| INTERNATIONAL-SEARCH-REPORT | JP2005162887 |
| INTERNATIONAL-SEARCH-REPORT | JP2010132930 |
| INTERNATIONAL-SEARCH-REPORT | JP2013057009 |
| INTERNATIONAL-SEARCH-REPORT | JP2016028120 |
| INTERNATIONAL-SEARCH-REPORT | JP2016141775 |
| INTERNATIONAL-SEARCH-REPORT | JPH11106615 |
| INTERNATIONAL-SEARCH-REPORT | JPH11279381 |
| INTERNATIONAL-SEARCH-REPORT | JPS54138531 |
| INTERNATIONAL-SEARCH-REPORT | WO2014061010 |
| OPPOSITION | EP0796743 |
| OPPOSITION | JP2013057009 |
| OPPOSITION | JP2013173821 |
| OPPOSITION | JP2014125515 |
| OPPOSITION | US4128709 |
| OPPOSITION | US4211730 |
| OPPOSITION | US5045618 |
| OPPOSITION | US6028156 |
| OPPOSITION | WO0036013 |
| OPPOSITION | WO2012140649 |
| SEARCH | EP0796743 |
| SEARCH | US4211730 |
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
Oct 5, 2023
Sep 29, 2023
Jul 11, 2023
Jul 4, 2023
Jul 4, 2023
Jul 4, 2023
Jul 4, 2023
Jun 20, 2023
Jun 20, 2023
Jun 16, 2023
Jun 16, 2023
Jun 13, 2023
Jun 13, 2023
Jun 13, 2023
Jun 6, 2023
Jun 6, 2023
Jun 6, 2023
Jun 6, 2023
Jun 6, 2023
Jun 6, 2023
Jun 6, 2023
Jun 6, 2023
Mar 16, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Mar 13, 2023
Nov 3, 2022
Nov 3, 2022
Oct 24, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Oct 18, 2022
Feb 1, 2022
Dec 23, 2021
Decision to grant a European patent
Search/Exam
Dec 6, 2021
(Electronic) Receipt
Search/Exam
Dec 6, 2021
Filing of the translations of the claims
Search/Exam
Dec 6, 2021
French translation of claims
Search/Exam
Dec 6, 2021
German translation of the claims
Search/Exam
Dec 6, 2021
Letter accompanying subsequently filed items
Search/Exam
Aug 6, 2021
Aug 6, 2021
Aug 6, 2021
Intention to grant (signatures)
Search/Exam
Aug 6, 2021
Text intended for grant (clean copy)
Search/Exam
Aug 6, 2021
Sep 7, 2020
(Electronic) Receipt
Search/Exam
Sep 7, 2020
Amended claims with annotations
Search/Exam
Sep 7, 2020
Amended description with annotations
Search/Exam
Sep 7, 2020
Claims
Search/Exam
Sep 7, 2020
Description
Search/Exam
Sep 7, 2020
Letter accompanying subsequently filed items
Search/Exam
Sep 7, 2020
May 18, 2020
Annex to the communication
Search/Exam
May 18, 2020
Communication from the Examining Division
Search/Exam
May 12, 2020
Examination started
Search/Exam
Sep 23, 2019
Sep 23, 2019
Amended claims with annotations
Search/Exam
Sep 23, 2019
Amendments received before examination
Search/Exam
Apr 5, 2019
Mar 20, 2019
Mar 20, 2019
European search opinion
Search/Exam
Mar 20, 2019
Information on Search Strategy
Search/Exam
Mar 20, 2019
Supplementary European search report
Search/Exam
Mar 13, 2019
Search started
Search/Exam
Jun 20, 2018
Notification of forthcoming publication
Search/Exam
Apr 18, 2018
Apr 17, 2018
Apr 16, 2018
Communication to designated inventor
Search/Exam
Apr 16, 2018
Communication to designated inventor
Search/Exam
Apr 16, 2018
Communication to designated inventor
Search/Exam
Apr 16, 2018
Communication to designated inventor
Search/Exam
Mar 27, 2018
Mar 27, 2018
Feb 1, 2018
Abstract
Search/Exam
Feb 1, 2018
Claims
Search/Exam
Feb 1, 2018
Description
Search/Exam
Feb 1, 2018
Drawings
Search/Exam
Feb 1, 2018
Letter accompanying subsequently filed items
Search/Exam
Feb 1, 2018
Matter concerning the application
Search/Exam
Feb 1, 2018
Request for entry into the European phase
Search/Exam
Jan 19, 2018
Information on entry into European phase
Search/Exam
Apr 3, 2017
Apr 3, 2017
Apr 3, 2017
Mar 16, 2017
Copy of the international search report
Search/Exam
Mar 16, 2017
Mar 16, 2017
International publication pamphlet
Search/Exam