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The patent EP2560999 was granted to Chevron Phillips Chemical LP on Jun 25, 2025. The application was filed on Apr 15, 2011 under application number EP11719104A. 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 | Dec 14, 2018 | LYONDELLBASELL | ADMISSIBLE |
| THE DOW CHEMICAL | Dec 13, 2018 | 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 | US20090565257 |
| DESCRIPTION | US2004059070 |
| DESCRIPTION | US3242099 |
| DESCRIPTION | US3248179 |
| DESCRIPTION | US4060480 |
| DESCRIPTION | US4452910 |
| DESCRIPTION | US4501885 |
| DESCRIPTION | US4588790 |
| DESCRIPTION | US4794096 |
| DESCRIPTION | US4808561 |
| DESCRIPTION | US5352749 |
| DESCRIPTION | US5376611 |
| DESCRIPTION | US5436304 |
| DESCRIPTION | US5455314 |
| DESCRIPTION | US5565175 |
| DESCRIPTION | US5575979 |
| DESCRIPTION | US5576259 |
| DESCRIPTION | US5739220 |
| 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 | US7064225 |
| DESCRIPTION | US7119153 |
| DESCRIPTION | US7226886 |
| DESCRIPTION | US7312283 |
| DESCRIPTION | US7517939 |
| DESCRIPTION | US7619047 |
| INTERNATIONAL-SEARCH-REPORT | US2007043176 |
| INTERNATIONAL-SEARCH-REPORT | US2007179044 |
| INTERNATIONAL-SEARCH-REPORT | US2009088537 |
| OPPOSITION | EP2374822 |
| OPPOSITION | US2002165330 |
| OPPOSITION | US6936675 |
| OPPOSITION | US7875690 |
| OPPOSITION | WO03008468 |
| OPPOSITION | WO2009103516 |
| OPPOSITION | WO9744371 |
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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Appeal
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Advice of delivery
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(Electronic) Receipt
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(Electronic) Receipt
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(Electronic) Receipt
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(Electronic) Receipt
Appeal
Mar 2, 2023
General enquiry
Appeal
Mar 2, 2023
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(Electronic) Receipt
Appeal
Jan 18, 2023
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Dec 20, 2022
Document concerning representation
Search/Exam
Jun 8, 2022
Advice of delivery
Appeal
Jun 8, 2022
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(Electronic) Receipt
Appeal
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Appeal
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Reply to appeal
Appeal
Jul 27, 2020
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
May 26, 2020
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Notice of appeal
Appeal
May 14, 2020
(Electronic) Receipt
Appeal
May 14, 2020
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Notice of appeal
Appeal
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OPPO
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May 3, 2019
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May 3, 2019
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Apr 12, 2019
Communication of amended entries
Search/Exam
Mar 11, 2019
Request concerning representative opponent
Search/Exam
Jan 4, 2019
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Submission concerning representation
Search/Exam
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Mar 26, 2018
Feb 15, 2018
Decision to grant a European patent
Search/Exam
Jan 31, 2018
(Electronic) Receipt
Search/Exam
Jan 31, 2018
Filing of the translations of the claims
Search/Exam
Jan 31, 2018
French translation of claims
Search/Exam
Jan 31, 2018
German translation of the claims
Search/Exam
Jan 31, 2018
Letter accompanying subsequently filed items
Search/Exam
Oct 20, 2017
Oct 20, 2017
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Intention to grant (signatures)
Search/Exam
Oct 20, 2017
Text intended for grant (clean copy)
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Oct 20, 2017
Nov 17, 2016
(Electronic) Receipt
Search/Exam
Nov 17, 2016
Amended claims with annotations
Search/Exam
Nov 17, 2016
Amended description with annotations
Search/Exam
Nov 17, 2016
Claims
Search/Exam
Nov 17, 2016
Description
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Nov 17, 2016
Letter accompanying subsequently filed items
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Nov 17, 2016
Sep 20, 2016
Annex to the communication
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Sep 20, 2016
Communication from the Examining Division
Search/Exam
Aug 13, 2015
Examination started
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Aug 8, 2013
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Jul 31, 2013
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Amended claims with annotations
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May 8, 2013
Amendments received before examination
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Jan 30, 2013
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Communication to designated inventor
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Jan 16, 2013
Letter concerning the inventor
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Jan 10, 2013
Dec 21, 2012
Letter which had not been notified
Search/Exam
Nov 27, 2012
Nov 23, 2012
Communication to designated inventor
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Communication to designated inventor
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Nov 23, 2012
Communication to designated inventor
Search/Exam
Nov 23, 2012
Communication to designated inventor
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Nov 23, 2012
Communication to designated inventor
Search/Exam
Nov 7, 2012
Nov 5, 2012
(Electronic) Receipt
Search/Exam
Nov 5, 2012
Matter concerning the application
Search/Exam
Nov 5, 2012
Request for entry into the European phase
Search/Exam
Aug 31, 2012
Information on entry into European phase
Search/Exam
Nov 17, 2011
Oct 27, 2011
Copy of the international search report
Search/Exam
Oct 27, 2011
Published international application - A1
Search/Exam
Aug 29, 2011
Aug 29, 2011
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Apr 27, 2011
Abstract
PCTISA
Apr 27, 2011
Claims
PCTISA
Apr 27, 2011
Description
PCTISA
Apr 27, 2011
Drawings
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