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The patent EP3393823 was granted to Compagnie Gnrale DES Etablissements Michelin on Jul 16, 2025. The application was filed on Dec 21, 2016 under application number EP16826424A. 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 |
|---|---|---|---|
| SUMITOMO RUBBER INDUSTRIES | Aug 31, 2022 | WINTER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | WO02088238 |
| INTERNATIONAL-SEARCH-REPORT | WO2015091929 |
| INTERNATIONAL-SEARCH-REPORT | WO2015091933 |
| INTERNATIONAL-SEARCH-REPORT | WO2015185395 |
| OPPOSITION | EP2727745 |
| OPPOSITION | EP2799480 |
| OPPOSITION | EP3900950 |
| OPPOSITION | JP2013185048 |
| OPPOSITION | JP2015083649 |
| OPPOSITION | JP2015199866 |
| OPPOSITION | JP4875757B |
| OPPOSITION | JP5619141B |
| OPPOSITION | JP5925435B |
| OPPOSITION | JP6060184B |
| OPPOSITION | US2012029114 |
| OPPOSITION | US2013274404 |
| OPPOSITION | WO2010126500 |
| OPPOSITION | WO2018079803 |
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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Authorisation
OPPO
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Decision to grant a European patent
Search/Exam
Oct 19, 2021
(Electronic) Receipt
Search/Exam
Oct 19, 2021
English translation of the claims
Search/Exam
Oct 19, 2021
Filing of the translations of the claims
Search/Exam
Oct 19, 2021
German translation of the claims
Search/Exam
Oct 19, 2021
Letter accompanying subsequently filed items
Search/Exam
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Intention to grant (signatures)
Search/Exam
Jun 30, 2021
Text intended for grant (clean copy)
Search/Exam
Jun 30, 2021
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(Electronic) Receipt
Search/Exam
Jan 20, 2021
Amended description with annotations
Search/Exam
Jan 20, 2021
Description
Search/Exam
Jan 20, 2021
Letter accompanying subsequently filed items
Search/Exam
Jan 20, 2021
Nov 24, 2020
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(Electronic) Receipt
Search/Exam
Nov 18, 2020
Letter accompanying subsequently filed items
Search/Exam
Nov 18, 2020
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Annex to the communication
Search/Exam
Jul 21, 2020
Communication from the Examining Division
Search/Exam
Jan 15, 2020
(Electronic) Receipt
Search/Exam
Jan 15, 2020
Amended claims with annotations
Search/Exam
Jan 15, 2020
Claims
Search/Exam
Jan 15, 2020
Letter accompanying subsequently filed items
Search/Exam
Jan 15, 2020
Nov 28, 2019
Nov 25, 2019
(Electronic) Receipt
Search/Exam
Nov 25, 2019
Letter accompanying subsequently filed items
Search/Exam
Nov 25, 2019
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Annex to the communication
Search/Exam
Jul 16, 2019
Communication from the Examining Division
Search/Exam
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Priority search results copy provided by EPO
Search/Exam
Jul 31, 2018
Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
Jul 19, 2018
(Electronic) Receipt
Search/Exam
Jul 19, 2018
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Amendments received before examination
Search/Exam
Jul 19, 2018
Request for entry into the European phase
Search/Exam
Jul 16, 2018
May 4, 2018
Information on entry into European phase
Search/Exam
Jul 18, 2017
Jul 11, 2017
Notification of the recording of a change
Search/Exam
Jun 29, 2017
Copy of the international search report
Search/Exam
Jun 29, 2017
Published international application - A1
Search/Exam
Apr 6, 2017
ISR: cited documents
PCTISA
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Abstract
PCTISA
Dec 21, 2016
Claims
PCTISA
Dec 21, 2016
Description
PCTISA