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The patent EP3648939 was granted to Basell Polyolefine on Jan 13, 2021. The application was filed on Aug 30, 2018 under application number EP18758901A. The patent is currently recorded with a legal status of "Revoked".

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 | Oct 12, 2021 | BOULT WADE TENNANT | ADMISSIBLE |
| CHEVRON PHILLIPS CHEMICAL LP | Jul 30, 2021 | POTTER CLARKSON | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US5534472 |
| DESCRIPTION | WO0002929 |
| DESCRIPTION | WO2004096523 |
| DESCRIPTION | WO2005019280 |
| DESCRIPTION | WO2007070121 |
| DESCRIPTION | WO2014202420 |
| DESCRIPTION | WO2016087566 |
| DESCRIPTION | WO9704015 |
| INTERNATIONAL-SEARCH-REPORT | WO2005019280 |
| INTERNATIONAL-SEARCH-REPORT | WO2006023213 |
| INTERNATIONAL-SEARCH-REPORT | WO2007070121 |
| INTERNATIONAL-SEARCH-REPORT | WO2008033410 |
| INTERNATIONAL-SEARCH-REPORT | WO2009059967 |
| INTERNATIONAL-SEARCH-REPORT | WO2016087564 |
| INTERNATIONAL-SEARCH-REPORT | WO2016087566 |
| INTERNATIONAL-SEARCH-REPORT | WO2016184812 |
| OPPOSITION | US2007007681 |
| OPPOSITION | US2009035545 |
| OPPOSITION | US4900792 |
| OPPOSITION | US6706822 |
| OPPOSITION | WO0002929 |
| OPPOSITION | WO2006036348 |
| OPPOSITION | WO2013101767 |
| OPPOSITION | WO2016087564 |
| OPPOSITION | WO2016087566 |
| OPPOSITION | WO2017033142 |
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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Appeal
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Appeal
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Decision to grant a European patent
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Dec 3, 2020
(Electronic) Receipt
Search/Exam
Dec 3, 2020
Filing of the translations of the claims
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Dec 3, 2020
French translation of claims
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Dec 3, 2020
German translation of the claims
Search/Exam
Nov 30, 2020
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Intention to grant (signatures)
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Nov 30, 2020
Text intended for grant (clean copy)
Search/Exam
Nov 30, 2020
Oct 27, 2020
(Electronic) Receipt
Search/Exam
Oct 27, 2020
Amended claims with annotations
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Oct 27, 2020
Claims
Search/Exam
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Intention to grant (signatures)
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Sep 28, 2020
Text intended for grant (clean copy)
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Sep 28, 2020
Aug 7, 2020
Examination started
Search/Exam
Jun 23, 2020
Change to the inventor details
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Jun 15, 2020
(Electronic) Receipt
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Jun 15, 2020
Letter accompanying subsequently filed items
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Jun 15, 2020
Letter concerning the inventor
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Jun 3, 2020
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Observations by third parties
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Observations by third parties
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Patent document filed by a Third party
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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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Communication to designated inventor
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Feb 11, 2020
Feb 6, 2020
Priority search results copy provided by EPO
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Feb 4, 2020
(Electronic) Receipt
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Feb 4, 2020
Request for entry into the European phase
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Jan 10, 2020
Information on entry into European phase
Search/Exam
Mar 27, 2019
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Copy of the international search report
Search/Exam
Mar 7, 2019
Published international application - A1
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Jan 2, 2019
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Sep 5, 2018
Aug 30, 2018
(Electronic) Receipt
PCTRO
Aug 30, 2018
Abstract
PCTRO
Aug 30, 2018
Claims
PCTRO
Aug 30, 2018
Description
PCTRO
Aug 30, 2018
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Drawings
PCTRO
Aug 30, 2018
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