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The patent EP2361135 was granted to Kentucky Tennessee Clay on Feb 27, 2019. The application was filed on Oct 26, 2009 under application number EP09823927A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 |
|---|---|---|---|
| SUMITOMO SHI FW ENERGIA | Nov 27, 2019 | GENIP | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2006210463 |
| DESCRIPTION | US5298473 |
| INTERNATIONAL-SEARCH-REPORT | US4251265 |
| INTERNATIONAL-SEARCH-REPORT | US4927348 |
| INTERNATIONAL-SEARCH-REPORT | US5298473 |
| INTERNATIONAL-SEARCH-REPORT | US5353721 |
| INTERNATIONAL-SEARCH-REPORT | US6808692 |
| OPPOSITION | DD250568 |
| OPPOSITION | EP0338103 |
| OPPOSITION | US2006210463 |
| OPPOSITION | US2158987 |
| OPPOSITION | US4387653 |
| OPPOSITION | US4935062 |
| OPPOSITION | US5947888 |
| OPPOSITION | WO8810291 |
| OPPOSITION | WO9911976 |
| SEARCH | US2006210463 |
| SEARCH | US4771712 |
| SEARCH | US5298473 |
| SEARCH | WO9911976 |
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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Dec 17, 2024
Dec 17, 2024
Dec 17, 2024
Dec 5, 2024
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Dec 5, 2024
Nov 25, 2024
(Electronic) Receipt
Appeal
Nov 25, 2024
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Nov 25, 2024
Nov 15, 2024
(Electronic) Receipt
Appeal
Nov 15, 2024
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Oct 23, 2024
(Electronic) Receipt
Appeal
Oct 23, 2024
Oct 23, 2024
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Sep 24, 2024
Sep 24, 2024
Sep 18, 2024
(Electronic) Receipt
Appeal
Sep 18, 2024
(Electronic) Receipt
Appeal
Sep 18, 2024
Sep 18, 2024
Sep 18, 2024
Sep 18, 2024
Sep 13, 2024
Sep 13, 2024
Aug 22, 2024
(Electronic) Receipt
Appeal
Aug 22, 2024
Aug 22, 2024
Aug 22, 2024
Jul 24, 2024
Jul 24, 2024
Jul 1, 2024
Jul 1, 2024
Jun 26, 2024
May 17, 2024
May 16, 2024
(Electronic) Receipt
Appeal
May 16, 2024
May 16, 2024
May 14, 2024
May 3, 2024
(Electronic) Receipt
Appeal
May 3, 2024
May 3, 2024
Apr 18, 2024
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Apr 15, 2024
Jan 19, 2024
Jan 9, 2024
Jul 4, 2023
Mar 14, 2023
Sep 28, 2022
Document concerning representation
Search/Exam
Aug 17, 2022
Aug 11, 2022
(Electronic) Receipt
Appeal
Aug 11, 2022
Aug 11, 2022
Aug 11, 2022
Aug 11, 2022
Aug 11, 2022
Aug 11, 2022
Reply to appeal
Appeal
Apr 4, 2022
Mar 30, 2022
Mar 28, 2022
(Electronic) Receipt
Appeal
Mar 28, 2022
Mar 28, 2022
Jan 24, 2022
Jan 24, 2022
Jan 11, 2022
(Electronic) Receipt
Appeal
Jan 11, 2022
Jan 11, 2022
Notice of appeal
Appeal
Nov 22, 2021
Nov 18, 2021
Nov 18, 2021
Nov 18, 2021
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Means of redress
OPPO
Nov 18, 2021
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Dec 10, 2019
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Dec 5, 2019
Nov 27, 2019
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Nov 27, 2019
Mar 11, 2019
Jan 31, 2019
Decision to grant a European patent
Search/Exam
Jan 21, 2019
Jan 21, 2019
Jan 21, 2019
Intention to grant (signatures)
Search/Exam
Jan 21, 2019
Text intended for grant (clean copy)
Search/Exam
Jan 21, 2019
Dec 21, 2018
(Electronic) Receipt
Search/Exam
Dec 21, 2018
Amended description with annotations
Search/Exam
Dec 21, 2018
Description
Search/Exam
Dec 21, 2018
French translation of claims
Search/Exam
Dec 21, 2018
German translation of the claims
Search/Exam
Dec 21, 2018
Letter accompanying subsequently filed items
Search/Exam
Dec 21, 2018
Aug 21, 2018
Aug 21, 2018
Aug 21, 2018
Intention to grant (signatures)
Search/Exam
Aug 21, 2018
Text intended for grant (clean copy)
Search/Exam
Aug 21, 2018
Mar 2, 2018
(Electronic) Receipt
Search/Exam
Mar 2, 2018
Amended claims with annotations
Search/Exam
Mar 2, 2018
Claims
Search/Exam
Mar 2, 2018
Letter accompanying subsequently filed items
Search/Exam
Mar 2, 2018
Aug 23, 2017
Annex to the communication
Search/Exam
Aug 23, 2017
Communication from the Examining Division
Search/Exam
Sep 23, 2016
(Electronic) Receipt
Search/Exam
Sep 23, 2016
Amended claims with annotations
Search/Exam
Sep 23, 2016
Claims
Search/Exam
Sep 23, 2016
Letter accompanying subsequently filed items
Search/Exam
Sep 23, 2016
Matter concerning the application
Search/Exam
Sep 23, 2016
Mar 14, 2016
Annex to the communication
Search/Exam
Mar 14, 2016
Communication from the Examining Division
Search/Exam
Mar 7, 2016
Examination started
Search/Exam
Aug 16, 2013
(Electronic) Receipt
Search/Exam
Aug 16, 2013
Letter accompanying subsequently filed items
Search/Exam
Aug 16, 2013
Reply to Written Opinion prepared by the EPO
Search/Exam
Feb 12, 2013
Jan 24, 2013
Jan 24, 2013
European search opinion
Search/Exam
Jan 24, 2013
Supplementary European search report
Search/Exam
Dec 17, 2012
(Electronic) Receipt
Search/Exam
Dec 17, 2012
Dec 17, 2012
Letter accompanying subsequently filed items
Search/Exam
Aug 3, 2011
Jul 14, 2011
May 19, 2011
Apr 21, 2011
(Electronic) Receipt
Search/Exam
Apr 21, 2011
Apr 21, 2011
Amended claims with annotations
Search/Exam
Apr 21, 2011
Matter concerning the application
Search/Exam
Apr 21, 2011
Request for entry into the European phase
Search/Exam
Mar 14, 2011
Information on entry into European phase
Search/Exam
May 28, 2010
May 28, 2010
May 6, 2010
Copy of the international search report
Search/Exam
May 6, 2010
May 6, 2010
Published international application - A1
Search/Exam