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The patent EP3523335 was granted to Solvay Specialty Polymers Italy on May 15, 2024. The application was filed on Sep 29, 2017 under application number EP17777050A. 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 |
|---|---|---|---|
| ARKEMA FRANCE | Apr 8, 2021 | ARKEMA PATENT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2011160415 |
| DESCRIPTION | US2012283382 |
| DESCRIPTION | US4173033 |
| DESCRIPTION | US4611260 |
| DESCRIPTION | US4684337 |
| DESCRIPTION | US4708989 |
| DESCRIPTION | US4778867 |
| DESCRIPTION | US4784915 |
| DESCRIPTION | US6255520 |
| DESCRIPTION | US7122608 |
| INTERNATIONAL-SEARCH-REPORT | EP0508802 |
| INTERNATIONAL-SEARCH-REPORT | EP2133370 |
| INTERNATIONAL-SEARCH-REPORT | US2012283382 |
| OPPOSITION | US2011082271 |
| OPPOSITION | US2011160415 |
| OPPOSITION | US2012283382 |
| OPPOSITION | US2015030906 |
| OPPOSITION | US4784915 |
| OPPOSITION | WO2016042914 |
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.
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Decision to grant a European patent
Search/Exam
May 26, 2020
(Electronic) Receipt
Search/Exam
May 26, 2020
Filing of the translations of the claims
Search/Exam
May 26, 2020
French translation of claims
Search/Exam
May 26, 2020
German translation of the claims
Search/Exam
May 26, 2020
Letter accompanying subsequently filed items
Search/Exam
Feb 10, 2020
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Intention to grant (signatures)
Search/Exam
Feb 10, 2020
Text intended for grant (clean copy)
Search/Exam
Feb 10, 2020
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Examination started
Search/Exam
Jul 17, 2019
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May 15, 2019
Communication to designated inventor
Search/Exam
May 15, 2019
Communication to designated inventor
Search/Exam
May 15, 2019
Communication to designated inventor
Search/Exam
May 10, 2019
Priority search results copy provided by EPO
Search/Exam
Apr 29, 2019
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Information regarding early processing
Search/Exam
Mar 14, 2019
(Electronic) Receipt
Search/Exam
Mar 14, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 14, 2019
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(Electronic) Receipt
Search/Exam
Mar 13, 2019
Request for entry into the European phase
Search/Exam
Feb 15, 2019
Information on entry into European phase
Search/Exam
Apr 30, 2018
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Copy of the international search report
Search/Exam
Apr 12, 2018
Published international application - A1
Search/Exam
Dec 13, 2017
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Sep 29, 2017
(Electronic) Receipt
PCTRO
Sep 29, 2017
Abstract
PCTRO
Sep 29, 2017
Claims
PCTRO
Sep 29, 2017
Description
PCTRO
Sep 29, 2017
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Drawings
PCTRO
Sep 29, 2017
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