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The patent EP2611861 was granted to Chevron Phillips Chemical LP on Jan 2, 2019. The application was filed on Aug 30, 2011 under application number EP11755485A. 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 |
|---|---|---|---|
| BOREALIS | Oct 2, 2019 | DEHNS | ADMISSIBLE |
| THE DOW CHEMICAL | Oct 1, 2019 | BOULT WADE TENNANT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2006094590 |
| DESCRIPTION | US2010029872 |
| DESCRIPTION | US2010041842 |
| DESCRIPTION | US3248179 |
| DESCRIPTION | US4501885 |
| DESCRIPTION | US4588790 |
| DESCRIPTION | US4939217 |
| DESCRIPTION | US5191132 |
| DESCRIPTION | US5210352 |
| DESCRIPTION | US5347026 |
| DESCRIPTION | US5352749 |
| DESCRIPTION | US5399636 |
| DESCRIPTION | US5401817 |
| DESCRIPTION | US5420320 |
| DESCRIPTION | US5436304 |
| DESCRIPTION | US5436305 |
| DESCRIPTION | US5451649 |
| DESCRIPTION | US5455314 |
| DESCRIPTION | US5496781 |
| DESCRIPTION | US5498581 |
| DESCRIPTION | US5541272 |
| DESCRIPTION | US5554795 |
| DESCRIPTION | US5563284 |
| DESCRIPTION | US5565175 |
| DESCRIPTION | US5565592 |
| DESCRIPTION | US5571880 |
| DESCRIPTION | US5575979 |
| DESCRIPTION | US5594078 |
| DESCRIPTION | US5631203 |
| DESCRIPTION | US5631335 |
| DESCRIPTION | US5654454 |
| DESCRIPTION | US5668230 |
| DESCRIPTION | US5705579 |
| DESCRIPTION | US6107230 |
| DESCRIPTION | US6165929 |
| DESCRIPTION | US6239235 |
| DESCRIPTION | US6262191 |
| DESCRIPTION | US6294494 |
| DESCRIPTION | US6300271 |
| DESCRIPTION | US6316553 |
| DESCRIPTION | US6355594 |
| DESCRIPTION | US6376415 |
| DESCRIPTION | US6391816 |
| DESCRIPTION | US6395666 |
| DESCRIPTION | US6509427 |
| DESCRIPTION | US6524987 |
| DESCRIPTION | US6548441 |
| DESCRIPTION | US6833415 |
| INTERNATIONAL-SEARCH-REPORT | US2006155082 |
| INTERNATIONAL-SEARCH-REPORT | US2007043182 |
| INTERNATIONAL-SEARCH-REPORT | US2008004411 |
| INTERNATIONAL-SEARCH-REPORT | US2010221475 |
| OPPOSITION | EP1319685 |
| OPPOSITION | EP1674523 |
| OPPOSITION | EP1834986 |
| OPPOSITION | EP2130860 |
| OPPOSITION | US2002042490 |
| OPPOSITION | US2008004411 |
| OPPOSITION | US2010221475 |
| OPPOSITION | US2010261848 |
| OPPOSITION | US6914113 |
| OPPOSITION | US7737220 |
| OPPOSITION | WO2005090464 |
| OPPOSITION | WO2009129597 |
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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OPPO
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Submission concerning representation
Search/Exam
Dec 6, 2018
Decision to grant a European patent
Search/Exam
Nov 23, 2018
(Electronic) Receipt
Search/Exam
Nov 23, 2018
Filing of the translations of the claims
Search/Exam
Nov 23, 2018
French translation of claims
Search/Exam
Nov 23, 2018
German translation of the claims
Search/Exam
Nov 23, 2018
Letter accompanying subsequently filed items
Search/Exam
Aug 24, 2018
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Intention to grant (signatures)
Search/Exam
Aug 24, 2018
Text intended for grant (clean copy)
Search/Exam
Aug 24, 2018
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(Electronic) Receipt
Search/Exam
Jul 30, 2018
Amended description with annotations
Search/Exam
Jul 30, 2018
Description
Search/Exam
Jul 30, 2018
Letter accompanying subsequently filed items
Search/Exam
Jul 30, 2018
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Intention to grant (signatures)
Search/Exam
Jun 1, 2018
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Search/Exam
Jun 1, 2018
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(Electronic) Receipt
Search/Exam
Feb 8, 2018
Amended claims with annotations
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Feb 8, 2018
Claims
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Feb 8, 2018
Letter accompanying subsequently filed items
Search/Exam
Feb 8, 2018
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Annex to the communication
Search/Exam
Jan 26, 2018
Communication from the Examining Division
Search/Exam
Jul 24, 2017
(Electronic) Receipt
Search/Exam
Jul 24, 2017
Amended claims with annotations
Search/Exam
Jul 24, 2017
Claims
Search/Exam
Jul 24, 2017
Letter accompanying subsequently filed items
Search/Exam
Jul 24, 2017
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Annex to the communication
Search/Exam
Jun 23, 2017
Communication from the Examining Division
Search/Exam
Jun 13, 2017
Examination started
Search/Exam
Aug 8, 2013
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Amended claims with annotations
Search/Exam
Aug 1, 2013
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Amendments received before examination
Search/Exam
Jul 31, 2013
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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
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Communication to designated inventor
Search/Exam
Mar 19, 2013
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(Electronic) Receipt
Search/Exam
Mar 5, 2013
Request for entry into the European phase
Search/Exam
Jan 11, 2013
Information on entry into European phase
Search/Exam
May 11, 2012
Mar 8, 2012
Copy of the international search report
Search/Exam
Mar 8, 2012
Published international application - A1
Search/Exam
Dec 2, 2011
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Sep 7, 2011
Abstract
PCTISA
Sep 7, 2011
Claims
PCTISA
Sep 7, 2011
Description
PCTISA