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The patent EP3593894 was granted to Johnson Matthey Public on Nov 23, 2022. The application was filed on Apr 1, 2015 under application number EP19195388A. 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 |
|---|---|---|---|
| BASF MOBILE EMISSIONS CATALYSTS | Aug 22, 2023 | ALTMANN STOSSEL DICK PATENTANWALTE PARTG MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0945165 |
| DESCRIPTION | US4300956 |
| DESCRIPTION | US5045519 |
| DESCRIPTION | US5146743 |
| DESCRIPTION | US6217837 |
| DESCRIPTION | US6513324 |
| DESCRIPTION | US6517795 |
| DESCRIPTION | WO2007077462 |
| DESCRIPTION | WO2011080525 |
| DESCRIPTION | WO2012120292 |
| DESCRIPTION | WO2012166868 |
| DESCRIPTION | WO9947260 |
| EXAMINATION | DE102012208876 |
| EXAMINATION | EP0935055 |
| EXAMINATION | US2014038814 |
| EXAMINATION | US8449852 |
| EXAMINATION | WO2012166868 |
| OPPOSITION | US2013280150 |
| OPPOSITION | WO2012166868 |
| SEARCH | DE102012208876 |
| SEARCH | EP1121981 |
| SEARCH | EP2692436 |
| SEARCH | JP2000225348 |
| SEARCH | JPH06142519 |
| SEARCH | US5407880 |
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
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Dec 11, 2025
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Refund of fees
Search/Exam
Jul 30, 2025
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(Electronic) Receipt
Appeal
Jul 24, 2025
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Withdrawal of an appeal
Appeal
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(Electronic) Receipt
Appeal
May 23, 2025
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Notice of appeal
Appeal
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Means of redress
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(Electronic) Receipt
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Feb 25, 2025
Feb 14, 2025
Annexes in respect of a client data request
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Feb 14, 2025
Letter accompanying subsequently filed items
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Feb 14, 2025
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Decision to grant a European patent
Search/Exam
Oct 18, 2022
(Electronic) Receipt
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Oct 18, 2022
Filing of the translations of the claims
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Oct 18, 2022
French translation of claims
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Oct 18, 2022
German translation of the claims
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Oct 18, 2022
Letter accompanying subsequently filed items
Search/Exam
Jul 25, 2022
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Intention to grant (signatures)
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Jul 25, 2022
Text intended for grant (clean copy)
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Jul 25, 2022
Sep 8, 2021
(Electronic) Receipt
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Sep 8, 2021
Amended claims with annotations
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Sep 8, 2021
Amended description with annotations
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Sep 8, 2021
Claims
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Sep 8, 2021
Description
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Sep 8, 2021
Letter accompanying subsequently filed items
Search/Exam
Sep 8, 2021
Jun 28, 2021
Annex to the communication
Search/Exam
Jun 28, 2021
Communication from the Examining Division
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Jun 24, 2021
Jun 14, 2021
(Electronic) Receipt
Search/Exam
Jun 14, 2021
Enquiry as to the processing of the file
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Jun 14, 2021
Letter accompanying subsequently filed items
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Apr 9, 2021
Examination started
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Jul 15, 2020
(Electronic) Receipt
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Jul 15, 2020
Jul 15, 2020
Amended claims with annotations
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Jul 15, 2020
Amendments received before examination
Search/Exam
Jul 15, 2020
Letter accompanying subsequently filed items
Search/Exam
Jan 20, 2020
Dec 18, 2019
Notification of forthcoming publication
Search/Exam
Nov 19, 2019
Nov 19, 2019
European search opinion
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Nov 19, 2019
European search report
Search/Exam
Nov 19, 2019
Information on Search Strategy
Search/Exam
Nov 11, 2019
Search started
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Oct 28, 2019
Communication to designated inventor
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Oct 28, 2019
Communication to designated inventor
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Oct 28, 2019
Communication to designated inventor
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Oct 28, 2019
Communication to designated inventor
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Oct 28, 2019
Communication to designated inventor
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Sep 4, 2019
Abstract
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Sep 4, 2019
Sep 4, 2019
Claims
Search/Exam
Sep 4, 2019
Description
Search/Exam
Sep 4, 2019
Designation of inventor
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Sep 4, 2019
Drawings
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Sep 4, 2019
Request for grant of a European patent
Search/Exam
Oct 28, 2015
Oct 28, 2015