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The patent EP3656807 was granted to Toray Industries on Sep 4, 2024. The application was filed on May 15, 2018 under application number EP18835368A. 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 |
|---|---|---|---|
| ARKEMA FRANCE | Jun 4, 2025 | ARKEMA PATENT | ADMISSIBLE |
| EVONIK OPERATIONS | Jun 3, 2025 | F & E PATENT | ADMISSIBLE |
| VICTREX MANUFACTURING | May 30, 2025 | GURUN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2013203943 |
| DESCRIPTION | JP2016216654 |
| DESCRIPTION | JP3317357B |
| DESCRIPTION | WO2012002417 |
| DESCRIPTION | WO2015046290 |
| INTERNATIONAL-SEARCH-REPORT | JP2013159675 |
| INTERNATIONAL-SEARCH-REPORT | JP2014105310 |
| INTERNATIONAL-SEARCH-REPORT | JPH11114954 |
| INTERNATIONAL-SEARCH-REPORT | WO2012002417 |
| INTERNATIONAL-SEARCH-REPORT | WO2013147257 |
| INTERNATIONAL-SEARCH-REPORT | WO2015046290 |
| INTERNATIONAL-SEARCH-REPORT | WO2015122500 |
| OPPOSITION | CN103589138 |
| OPPOSITION | EP3299408 |
| OPPOSITION | EP3521345 |
| OPPOSITION | EP3656807 |
| OPPOSITION | JP2016191088 |
| OPPOSITION | JP2016216654 |
| OPPOSITION | JP2017138723 |
| OPPOSITION | JPH06143273 |
| OPPOSITION | JPS62158728 |
| OPPOSITION | US2001001408 |
| OPPOSITION | US2017334094 |
| OPPOSITION | US2018162073 |
| OPPOSITION | US4988278 |
| OPPOSITION | US5057175 |
| OPPOSITION | US5205898 |
| OPPOSITION | US9238336 |
| OPPOSITION | WO2015046290 |
| OPPOSITION | WO2016062896 |
| OPPOSITION | WO2016190194 |
| OPPOSITION | WO2018061597 |
| SEARCH | EP3521345 |
| SEARCH | JP2005161797 |
| SEARCH | JPH07227840 |
| SEARCH | US2017190123 |
| SEARCH | WO2016142781 |
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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Decision to grant a European patent
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Jul 24, 2024
(Electronic) Receipt
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Jul 24, 2024
Filing of the translations of the claims
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Jul 24, 2024
French translation of claims
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Jul 24, 2024
German translation of the claims
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Jul 24, 2024
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Apr 24, 2024
Text intended for grant (clean copy)
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Apr 24, 2024
Apr 3, 2024
Examination started
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Oct 1, 2021
(Electronic) Receipt
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Oct 1, 2021
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Amended claims with annotations
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Oct 1, 2021
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Amended description with annotations
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Oct 1, 2021
Amendments received before examination
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Oct 1, 2021
Letter accompanying subsequently filed items
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Mar 30, 2021
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European search opinion
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Mar 10, 2021
Information on Search Strategy
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Mar 10, 2021
Supplementary European search report
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Feb 25, 2021
Search started
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Apr 30, 2020
Notification of forthcoming publication
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Mar 19, 2020
Document concerning representation
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Feb 25, 2020
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Change to the inventor details
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Dec 24, 2019
(Electronic) Receipt
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Dec 24, 2019
Abstract
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Dec 24, 2019
Claims
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Dec 24, 2019
Description
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Dec 24, 2019
Drawings
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Dec 24, 2019
Request for entry into the European phase
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Nov 29, 2019
Information on entry into European phase
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Feb 15, 2019
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Jan 24, 2019
Copy of the international search report
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Jan 24, 2019
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International publication pamphlet
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