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The patent EP3728440 was granted to Borealis on May 7, 2025. The application was filed on Dec 18, 2018 under application number EP18816129A. 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 |
|---|---|---|---|
| BASELL POLYOLEFINE | May 17, 2023 | LYONDELLBASELL | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP1699882 |
| DESCRIPTION | EP2318210 |
| DESCRIPTION | US5539075 |
| DESCRIPTION | WO9308222 |
| DESCRIPTION | WO9635732 |
| INTERNATIONAL-SEARCH-REPORT | EP2468813 |
| INTERNATIONAL-SEARCH-REPORT | US2008254289 |
| INTERNATIONAL-SEARCH-REPORT | US2010181096 |
| INTERNATIONAL-SEARCH-REPORT | US2011162869 |
| INTERNATIONAL-SEARCH-REPORT | US2013000947 |
| OPPOSITION | EP1944327 |
| OPPOSITION | US2013000947 |
| OPPOSITION | US2021163635 |
| OPPOSITION | US5486575 |
| OPPOSITION | WO2019121710 |
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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Apr 10, 2025
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Refund of fees
Appeal
Jan 13, 2025
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Dec 23, 2024
Dec 20, 2024
(Electronic) Receipt
Appeal
Dec 20, 2024
Dec 20, 2024
Dec 20, 2024
Withdrawal of an appeal
Appeal
Dec 3, 2024
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Nov 29, 2024
(Electronic) Receipt
Appeal
Nov 29, 2024
Nov 29, 2024
Notice of appeal
Appeal
Oct 1, 2024
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OPPO
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Decision to grant a European patent
Search/Exam
Jul 11, 2022
(Electronic) Receipt
Search/Exam
Jul 11, 2022
Filing of the translations of the claims
Search/Exam
Jul 11, 2022
French translation of claims
Search/Exam
Jul 11, 2022
German translation of the claims
Search/Exam
Jul 11, 2022
Letter accompanying subsequently filed items
Search/Exam
Jun 2, 2022
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Intention to grant (signatures)
Search/Exam
Jun 2, 2022
Text intended for grant (clean copy)
Search/Exam
Jun 2, 2022
May 9, 2022
Examination started
Search/Exam
Feb 4, 2022
Jan 31, 2022
Letter accompanying subsequently filed items
Search/Exam
Jan 31, 2022
Jan 18, 2021
(Electronic) Receipt
Search/Exam
Jan 18, 2021
Jan 18, 2021
Amended claims with annotations
Search/Exam
Jan 18, 2021
Amendments received before examination
Search/Exam
Jan 18, 2021
Letter accompanying subsequently filed items
Search/Exam
Sep 30, 2020
Jul 28, 2020
Jul 24, 2020
Communication to designated inventor
Search/Exam
Jul 24, 2020
Communication to designated inventor
Search/Exam
Jul 24, 2020
Communication to designated inventor
Search/Exam
Jul 24, 2020
Communication to designated inventor
Search/Exam
Jul 21, 2020
Priority search results copy provided by EPO
Search/Exam
Jul 6, 2020
Jul 2, 2020
(Electronic) Receipt
Search/Exam
Jul 2, 2020
Annex
Search/Exam
Jul 2, 2020
Request for entry into the European phase
Search/Exam
May 4, 2020
Information on entry into European phase
Search/Exam
Jul 18, 2019
Jun 27, 2019
Copy of the international search report
Search/Exam
Jun 27, 2019
Published international application - A1
Search/Exam
Jan 31, 2019
Jan 31, 2019
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Jan 3, 2019
Dec 18, 2018
(Electronic) Receipt
PCTRO
Dec 18, 2018
Abstract
PCTRO
Dec 18, 2018
Claims
PCTRO
Dec 18, 2018
Description
PCTRO
Dec 18, 2018
Dec 18, 2018
Dec 18, 2018