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The patent EP3464457 was granted to Borealis on Apr 9, 2025. The application was filed on May 29, 2017 under application number EP17731075A. 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 |
|---|---|---|---|
| THE DOW CHEMICAL | Jun 1, 2022 | VO | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0047077 |
| DESCRIPTION | EP0188125 |
| DESCRIPTION | EP0250169 |
| DESCRIPTION | EP0372239 |
| DESCRIPTION | EP0376936 |
| DESCRIPTION | EP0424049 |
| DESCRIPTION | EP0479186 |
| DESCRIPTION | EP0499759 |
| DESCRIPTION | EP0560035 |
| DESCRIPTION | EP0579426 |
| DESCRIPTION | EP0600414 |
| DESCRIPTION | EP0614467 |
| DESCRIPTION | EP0655073 |
| DESCRIPTION | EP0683176 |
| DESCRIPTION | EP0684871 |
| DESCRIPTION | EP0696293 |
| DESCRIPTION | EP0699213 |
| DESCRIPTION | EP0707513 |
| DESCRIPTION | EP0721798 |
| DESCRIPTION | EP0891990 |
| DESCRIPTION | EP1310295 |
| DESCRIPTION | EP1415999 |
| DESCRIPTION | EP1574549 |
| DESCRIPTION | EP1591460 |
| DESCRIPTION | EP1600276 |
| DESCRIPTION | GB1272778 |
| DESCRIPTION | US3242150 |
| DESCRIPTION | US3324093 |
| DESCRIPTION | US3374211 |
| DESCRIPTION | US3405109 |
| DESCRIPTION | US4532311 |
| DESCRIPTION | US4543399 |
| DESCRIPTION | US4578879 |
| DESCRIPTION | US4582816 |
| DESCRIPTION | US4621952 |
| DESCRIPTION | US4803251 |
| DESCRIPTION | US4855370 |
| DESCRIPTION | US4933149 |
| DESCRIPTION | US5026795 |
| DESCRIPTION | US5391654 |
| DESCRIPTION | WO0026258 |
| DESCRIPTION | WO0029452 |
| DESCRIPTION | WO0105845 |
| DESCRIPTION | WO02088194 |
| DESCRIPTION | WO2005087361 |
| DESCRIPTION | WO2007025640 |
| DESCRIPTION | WO2008040504 |
| DESCRIPTION | WO2008064809 |
| DESCRIPTION | WO2008064810 |
| DESCRIPTION | WO9425495 |
| DESCRIPTION | WO9619503 |
| DESCRIPTION | WO9632420 |
| INTERNATIONAL-SEARCH-REPORT | EP2130863 |
| INTERNATIONAL-SEARCH-REPORT | EP3009456 |
| INTERNATIONAL-SEARCH-REPORT | EP3009457 |
| OPPOSITION | EP1909013 |
| OPPOSITION | EP2740761 |
| OPPOSITION | US2009246433 |
| OPPOSITION | US2009283939 |
| OPPOSITION | US2013075409 |
| OPPOSITION | WO0022040 |
| OPPOSITION | WO03016396 |
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
Search/Exam
Jul 22, 2021
(Electronic) Receipt
Search/Exam
Jul 22, 2021
Filing of the translations of the claims
Search/Exam
Jul 22, 2021
French translation of claims
Search/Exam
Jul 22, 2021
German translation of the claims
Search/Exam
Jul 22, 2021
Letter accompanying subsequently filed items
Search/Exam
Apr 14, 2021
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Intention to grant (signatures)
Search/Exam
Apr 14, 2021
Text intended for grant (clean copy)
Search/Exam
Apr 14, 2021
May 6, 2020
(Electronic) Receipt
Search/Exam
May 6, 2020
Letter accompanying subsequently filed items
Search/Exam
May 6, 2020
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Annex to the communication
Search/Exam
Jan 2, 2020
Communication from the Examining Division
Search/Exam
Dec 17, 2019
Examination started
Search/Exam
Jul 8, 2019
(Electronic) Receipt
Search/Exam
Jul 8, 2019
Letter accompanying subsequently filed items
Search/Exam
Jul 8, 2019
Reply to Written Opinion prepared by the EPO
Search/Exam
Mar 13, 2019
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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
Jan 3, 2019
Priority search results copy provided by EPO
Search/Exam
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(Electronic) Receipt
Search/Exam
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Amended description with annotations
Search/Exam
Dec 18, 2018
Request for entry into the European phase
Search/Exam
Nov 16, 2018
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Notification of the recording of a change
Search/Exam
Oct 12, 2018
Information on entry into European phase
Search/Exam
Aug 1, 2018
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Copy of the international search report
Search/Exam
Dec 7, 2017
Published international application - A1
Search/Exam
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ISR: cited documents
PCTISA
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(Electronic) Receipt
PCTRO
May 29, 2017
(Electronic) Receipt
PCTRO
May 29, 2017
Abstract
PCTRO
May 29, 2017
Claims
PCTRO
May 29, 2017
Description
PCTRO
May 29, 2017
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