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The patent EP2664379 was granted to Engelhard on Sep 4, 2024. The application was filed on Aug 22, 2005 under application number EP13178810A. 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 |
|---|---|---|---|
| JOHNSON MATTHEY PUBLIC | Feb 21, 2020 | BOULT WADE TENNANT | ADMISSIBLE |
| UMICORE | Feb 20, 2020 | VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US20030634659 |
| DESCRIPTION | US3111396 |
| DESCRIPTION | US3970739 |
| DESCRIPTION | US4188364 |
| DESCRIPTION | US4438082 |
| DESCRIPTION | US4883113 |
| DESCRIPTION | US4961917 |
| DESCRIPTION | US4963332 |
| DESCRIPTION | US5024981 |
| DESCRIPTION | US5120695 |
| DESCRIPTION | US5462907 |
| DESCRIPTION | US5522218 |
| DESCRIPTION | US6077600 |
| DESCRIPTION | US6415602 |
| EXAMINATION | WO0029726 |
| OPPOSITION | DE10065717 |
| OPPOSITION | EP0393905 |
| OPPOSITION | EP0393917 |
| OPPOSITION | EP0544282 |
| OPPOSITION | EP0694329 |
| OPPOSITION | EP0706816 |
| OPPOSITION | EP1399246 |
| OPPOSITION | GB1586530 |
| OPPOSITION | JPH01139145 |
| OPPOSITION | US2004209769 |
| OPPOSITION | US4961917 |
| OPPOSITION | US5120695 |
| OPPOSITION | US5516497 |
| OPPOSITION | US6415602 |
| OPPOSITION | WO0029726 |
| OPPOSITION | WO02100520 |
| SEARCH | EP0730900 |
| SEARCH | US2004001781 |
| SEARCH | US2004001782 |
| SEARCH | US5120695 |
| SEARCH | US5354544 |
| SEARCH | US5399324 |
| SEARCH | WO02100520 |
| SEARCH | WO9955459 |
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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Aug 8, 2024
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(Electronic) Receipt
Appeal
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Dec 11, 2023
(Electronic) Receipt
Appeal
Dec 11, 2023
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Dec 4, 2023
(Electronic) Receipt
Appeal
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Nov 10, 2023
(Electronic) Receipt
Appeal
Nov 10, 2023
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General enquiry
Appeal
Nov 8, 2023
(Electronic) Receipt
Appeal
Nov 8, 2023
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Appeal
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Appeal
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Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Apr 19, 2022
Reply to appeal
Appeal
Apr 14, 2022
(Electronic) Receipt
Appeal
Apr 14, 2022
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Reply to appeal
Appeal
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Appeal
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(Electronic) Receipt
Appeal
Oct 6, 2021
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Notice of appeal
Appeal
Oct 5, 2021
(Electronic) Receipt
Appeal
Oct 5, 2021
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Notice of appeal
Appeal
Jul 30, 2021
Advice of delivery
Appeal
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Means of redress
OPPO
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Jun 3, 2019
Apr 26, 2019
Decision to grant a European patent
Search/Exam
Apr 12, 2019
(Electronic) Receipt
Search/Exam
Apr 12, 2019
French translation of claims
Search/Exam
Apr 12, 2019
German translation of the claims
Search/Exam
Apr 12, 2019
Letter accompanying subsequently filed items
Search/Exam
Dec 20, 2018
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Intention to grant (signatures)
Search/Exam
Dec 20, 2018
Text intended for grant (clean copy)
Search/Exam
Dec 20, 2018
Nov 13, 2018
(Electronic) Receipt
Search/Exam
Nov 13, 2018
Amended claims with annotations
Search/Exam
Nov 13, 2018
Amended description with annotations
Search/Exam
Nov 13, 2018
Claims
Search/Exam
Nov 13, 2018
Description
Search/Exam
Nov 13, 2018
Letter accompanying subsequently filed items
Search/Exam
Nov 13, 2018
Sep 25, 2018
Annex to the communication
Search/Exam
Sep 25, 2018
Sep 25, 2018
Aug 2, 2018
(Electronic) Receipt
Search/Exam
Aug 2, 2018
Letter accompanying subsequently filed items
Search/Exam
Aug 2, 2018
Apr 20, 2018
Submission concerning representation
Search/Exam
Apr 9, 2018
Annex to the communication
Search/Exam
Apr 9, 2018
Communication from the Examining Division
Search/Exam
Mar 20, 2018
Examination started
Search/Exam
Dec 14, 2017
Feb 9, 2017
Jul 6, 2016
Jul 6, 2016
Jul 5, 2016
General authorisation
Search/Exam
Jul 5, 2016
May 26, 2016
(Electronic) Receipt
Search/Exam
May 26, 2016
Letter accompanying subsequently filed items
Search/Exam
May 26, 2016
May 18, 2016
May 20, 2014
(Electronic) Receipt
Search/Exam
May 20, 2014
May 20, 2014
May 20, 2014
Amended description with annotations
Search/Exam
May 20, 2014
Amendments received before examination
Search/Exam
May 20, 2014
Letter accompanying subsequently filed items
Search/Exam
Nov 25, 2013
Oct 28, 2013
Refund of fees
Search/Exam
Oct 23, 2013
Notification of forthcoming publication
Search/Exam
Oct 21, 2013
Oct 21, 2013
European search opinion
Search/Exam
Oct 21, 2013
European search report
Search/Exam
Oct 4, 2013
Search started
Search/Exam
Sep 23, 2013
Communication to designated inventor
Search/Exam
Sep 23, 2013
Communication to designated inventor
Search/Exam
Sep 17, 2013
Jul 31, 2013
Abstract
Search/Exam
Jul 31, 2013
Jul 31, 2013
Claims
Search/Exam
Jul 31, 2013
Copy of the international search report
Search/Exam
Jul 31, 2013
Description
Search/Exam
Jul 31, 2013
Designation of inventor
Search/Exam
Jul 31, 2013
Designation of inventor
Search/Exam
Jul 31, 2013
Drawings
Search/Exam
Jul 31, 2013
Request for grant of a European patent
Search/Exam
Mar 20, 2006