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The patent EP2087046 was granted to Cabot on Oct 18, 2023. The application was filed on Nov 6, 2007 under application number EP07844899A. 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 |
|---|---|---|---|
| ORION ENGINEERED CARBONS | May 27, 2020 | F & E PATENT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | US4138471 |
| INTERNATIONAL-SEARCH-REPORT | US2005063892 |
| INTERNATIONAL-SEARCH-REPORT | US6251983 |
| INTERNATIONAL-SEARCH-REPORT | US6323273 |
| INTERNATIONAL-SEARCH-REPORT | WO0032701 |
| INTERNATIONAL-SEARCH-REPORT | WO02082469 |
| INTERNATIONAL-SEARCH-REPORT | WO9419412 |
| OPPOSITION | JP2001354884 |
| OPPOSITION | US2002117388 |
| OPPOSITION | US2005063892 |
| OPPOSITION | US4138471 |
| OPPOSITION | US4755371 |
| OPPOSITION | WO03021017 |
| OPPOSITION | WO2008058114 |
| OTHER | EP2072580 |
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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Sep 21, 2023
Sep 21, 2023
Sep 15, 2023
Sep 8, 2023
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Jun 1, 2023
Refund of fees
Appeal
May 31, 2023
May 31, 2023
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May 17, 2023
(Electronic) Receipt
Appeal
May 17, 2023
May 17, 2023
May 17, 2023
Withdrawal of an appeal
Appeal
Dec 23, 2022
Dec 20, 2022
(Electronic) Receipt
Appeal
Dec 20, 2022
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Reply to appeal
Appeal
Aug 10, 2022
Aug 5, 2022
(Electronic) Receipt
Appeal
Aug 5, 2022
Aug 5, 2022
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Jun 3, 2022
(Electronic) Receipt
Appeal
Jun 3, 2022
Jun 3, 2022
Notice of appeal
Appeal
Mar 31, 2022
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Means of redress
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Nov 14, 2019
Payment submission rejected
Search/Exam
Sep 9, 2019
Aug 1, 2019
Decision to grant a European patent
Search/Exam
Jul 18, 2019
(Electronic) Receipt
Search/Exam
Jul 18, 2019
French translation of claims
Search/Exam
Jul 18, 2019
German translation of the claims
Search/Exam
Jul 18, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 21, 2019
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Intention to grant (signatures)
Search/Exam
Mar 21, 2019
Text intended for grant (clean copy)
Search/Exam
Mar 21, 2019
Feb 13, 2019
(Electronic) Receipt
Search/Exam
Feb 13, 2019
Amended claims with annotations
Search/Exam
Feb 13, 2019
Claims
Search/Exam
Feb 13, 2019
Letter accompanying subsequently filed items
Search/Exam
Feb 13, 2019
Oct 11, 2018
Oct 11, 2018
Oct 11, 2018
Intention to grant (signatures)
Search/Exam
Oct 11, 2018
Text intended for grant (clean copy)
Search/Exam
Oct 11, 2018
Apr 20, 2018
Dec 19, 2017
Annex to the communication
Search/Exam
Dec 19, 2017
Communication from the Examining Division
Search/Exam
Aug 28, 2017
Aug 28, 2017
Aug 8, 2017
Jul 27, 2017
Jan 17, 2017
Annex to the communication
Search/Exam
Jan 17, 2017
Communication from the Examining Division
Search/Exam
Oct 14, 2016
Oct 14, 2016
Apr 6, 2016
Annex to the communication
Search/Exam
Apr 6, 2016
Communication from the Examining Division
Search/Exam
Feb 1, 2016
Claims
Search/Exam
Feb 1, 2016
Description
Search/Exam
Feb 1, 2016
Feb 1, 2016
Feb 1, 2016
Dec 18, 2015
Dec 10, 2015
Aug 18, 2015
Matter concerning the application
Search/Exam
Aug 3, 2015
Annex to the communication
Search/Exam
Aug 3, 2015
Communication from the Examining Division
Search/Exam
May 18, 2015
May 18, 2015
May 11, 2015
May 7, 2015
May 2, 2015
Observations by third parties
Search/Exam
May 2, 2015
Patent document filed by a Third party
Search/Exam
Apr 29, 2015
Letter accompanying subsequently filed items
Search/Exam
Apr 29, 2015
Observations by third parties
Search/Exam
Feb 24, 2015
Submission concerning representation
Search/Exam
Mar 26, 2010
Claims
Search/Exam
Mar 26, 2010
Jan 7, 2010
Annex to the communication
Search/Exam
Jan 7, 2010
Communication from the Examining Division
Search/Exam
Jul 15, 2009
Jun 24, 2009
May 27, 2009
May 19, 2009
Notification of the recording of a change
Search/Exam
May 19, 2009
Notification of the recording of a change
Search/Exam
May 19, 2009
Notification of the recording of a change
Search/Exam
May 19, 2009
Notification of the recording of a change
Search/Exam
May 7, 2009
(Electronic) Receipt
Search/Exam
May 7, 2009
May 7, 2009
Annex
Search/Exam
May 7, 2009
Matter concerning the application
Search/Exam
May 7, 2009
Request for entry into the European phase
Search/Exam
Mar 20, 2009
Information on entry into European phase
Search/Exam
Jul 31, 2008
Copy of the international search report
Search/Exam
Jul 31, 2008
Jun 5, 2008
May 15, 2008
Published international application - A2
Search/Exam
Nov 29, 2007
Abstract
PCTISA
Nov 29, 2007
Claims
PCTISA
Nov 29, 2007
Description
PCTISA
Nov 29, 2007
Drawings
PCTISA