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The patent EP3538572 was granted to Chevron Phillips Chemical LP on Dec 30, 2020. The application was filed on Nov 6, 2017 under application number EP17863295A. 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 | Sep 30, 2021 | BECK GREENER | ADMISSIBLE |
| TOTALENERGIES ONETECH BELGIUM | Sep 30, 2021 | MELLET | ADMISSIBLE |
| BOREALIS | Sep 29, 2021 | KADOR & PARTNER PART MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US3242099 |
| DESCRIPTION | US3248179 |
| DESCRIPTION | US4501885 |
| DESCRIPTION | US4588790 |
| DESCRIPTION | US4794096 |
| DESCRIPTION | US4808561 |
| DESCRIPTION | US5352749 |
| DESCRIPTION | US5436304 |
| DESCRIPTION | US5565175 |
| DESCRIPTION | US5575979 |
| DESCRIPTION | US5576259 |
| DESCRIPTION | US5807938 |
| DESCRIPTION | US5919983 |
| DESCRIPTION | US6107230 |
| DESCRIPTION | US6165929 |
| DESCRIPTION | US6239235 |
| DESCRIPTION | US6262191 |
| DESCRIPTION | US6294494 |
| DESCRIPTION | US6300271 |
| DESCRIPTION | US6316553 |
| DESCRIPTION | US6355594 |
| DESCRIPTION | US6376415 |
| DESCRIPTION | US6388017 |
| DESCRIPTION | US6391816 |
| DESCRIPTION | US6395666 |
| DESCRIPTION | US6524987 |
| DESCRIPTION | US6548441 |
| DESCRIPTION | US6548442 |
| DESCRIPTION | US6576583 |
| DESCRIPTION | US6613712 |
| DESCRIPTION | US6632894 |
| DESCRIPTION | US6667274 |
| DESCRIPTION | US6750302 |
| DESCRIPTION | US6833415 |
| DESCRIPTION | US7026494 |
| DESCRIPTION | US7041617 |
| DESCRIPTION | US7226886 |
| DESCRIPTION | US7294599 |
| DESCRIPTION | US7312283 |
| DESCRIPTION | US7517939 |
| DESCRIPTION | US7531606 |
| DESCRIPTION | US7598327 |
| DESCRIPTION | US7601665 |
| DESCRIPTION | US7619047 |
| DESCRIPTION | US7884163 |
| DESCRIPTION | US8114946 |
| DESCRIPTION | US8309485 |
| DESCRIPTION | US8618229 |
| DESCRIPTION | US8623973 |
| DESCRIPTION | US8822608 |
| DESCRIPTION | US8877672 |
| DESCRIPTION | US8895679 |
| DESCRIPTION | US8937139 |
| DESCRIPTION | US9023959 |
| DESCRIPTION | US9034991 |
| DESCRIPTION | US9394387 |
| INTERNATIONAL-SEARCH-REPORT | US2014128563 |
| INTERNATIONAL-SEARCH-REPORT | US2014213744 |
| OPPOSITION | EP3303426 |
| OPPOSITION | US2014100343 |
| OPPOSITION | US2014128563 |
| OPPOSITION | US2014213744 |
| OPPOSITION | US8372931 |
| OPPOSITION | US9040642 |
| OPPOSITION | WO2012033670 |
| OPPOSITION | WO2012122624 |
| OPPOSITION | WO2014066602 |
| OPPOSITION | WO2014164192 |
| OPPOSITION | WO9504761 |
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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Dec 3, 2020
Decision to grant a European patent
Search/Exam
Oct 30, 2020
(Electronic) Receipt
Search/Exam
Oct 30, 2020
Filing of the translations of the claims
Search/Exam
Oct 30, 2020
French translation of claims
Search/Exam
Oct 30, 2020
German translation of the claims
Search/Exam
Oct 30, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 24, 2020
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Intention to grant (signatures)
Search/Exam
Jul 24, 2020
Text intended for grant (clean copy)
Search/Exam
Jul 24, 2020
May 12, 2020
(Electronic) Receipt
Search/Exam
May 12, 2020
Amended claims with annotations
Search/Exam
May 12, 2020
Amended description with annotations
Search/Exam
May 12, 2020
Claims
Search/Exam
May 12, 2020
Description
Search/Exam
May 12, 2020
Letter accompanying subsequently filed items
Search/Exam
May 12, 2020
Mar 19, 2020
Annex to the communication
Search/Exam
Mar 19, 2020
Communication from the Examining Division
Search/Exam
Feb 21, 2020
Examination started
Search/Exam
Aug 21, 2019
Aug 19, 2019
(Electronic) Receipt
Search/Exam
Aug 19, 2019
Aug 19, 2019
Amended claims with annotations
Search/Exam
Aug 19, 2019
Amendments received before examination
Search/Exam
Aug 19, 2019
Letter accompanying subsequently filed items
Search/Exam
Jun 21, 2019
Jun 14, 2019
Communication to designated inventor
Search/Exam
Jun 14, 2019
Communication to designated inventor
Search/Exam
Jun 14, 2019
Communication to designated inventor
Search/Exam
Jun 14, 2019
Communication to designated inventor
Search/Exam
Jun 14, 2019
Communication to designated inventor
Search/Exam
Jun 5, 2019
May 2, 2019
(Electronic) Receipt
Search/Exam
May 2, 2019
Matter concerning the application
Search/Exam
May 2, 2019
Request for entry into the European phase
Search/Exam
Apr 16, 2019
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Notification of the recording of a change
Search/Exam
Apr 16, 2019
Notification of the recording of a change
Search/Exam
Apr 16, 2019
Notification of the recording of a change
Search/Exam
Aug 16, 2018
Copy of the international search report
Search/Exam
Aug 16, 2018
Aug 3, 2018
Jul 13, 2018
ISR: cited documents
PCTISA
Jul 12, 2018
Published international application - A2
Search/Exam
Jul 12, 2018
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May 9, 2018
Annex
PCTISA
May 9, 2018
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Apr 26, 2018
Abstract
PCTISA
Apr 26, 2018
Annex
PCTISA
Apr 26, 2018
Claims
PCTISA
Apr 26, 2018
Description
PCTISA
Apr 26, 2018
Drawings
PCTISA
Apr 26, 2018
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