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The patent EP2547443 was granted to Shell Internationale Research Maatschappij on Oct 30, 2024. The application was filed on Mar 17, 2011 under application number EP11708482A. 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 | Jan 4, 2023 | LORKIN | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE19757990 |
| DESCRIPTION | DE19840373 |
| DESCRIPTION | DE69720235T |
| DESCRIPTION | EP0722776 |
| DESCRIPTION | FR2603578 |
| DESCRIPTION | GB1133253 |
| DESCRIPTION | JPS54157507 |
| DESCRIPTION | JPS5817835B |
| DESCRIPTION | KR20000059743 |
| DESCRIPTION | US2004248732 |
| DESCRIPTION | US2006107424 |
| DESCRIPTION | US2802889 |
| DESCRIPTION | US3243387 |
| DESCRIPTION | US4329530 |
| DESCRIPTION | US4484015 |
| DESCRIPTION | US4762956 |
| DESCRIPTION | US5510550 |
| DESCRIPTION | US6255548 |
| DESCRIPTION | US6797669 |
| DESCRIPTION | US7453017 |
| EXAMINATION | US5889187 |
| INTERNATIONAL-SEARCH-REPORT | DE3543640 |
| INTERNATIONAL-SEARCH-REPORT | GB686574 |
| INTERNATIONAL-SEARCH-REPORT | US2005137433 |
| INTERNATIONAL-SEARCH-REPORT | US2007027030 |
| INTERNATIONAL-SEARCH-REPORT | US3243387 |
| INTERNATIONAL-SEARCH-REPORT | WO0119763 |
| INTERNATIONAL-SEARCH-REPORT | WO2008127406 |
| OPPOSITION | US2005154236 |
| OPPOSITION | US4484015 |
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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Search/Exam
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Decision to grant a European patent
Search/Exam
Feb 25, 2022
(Electronic) Receipt
Search/Exam
Feb 25, 2022
Filing of the translations of the claims
Search/Exam
Feb 25, 2022
French translation of claims
Search/Exam
Feb 25, 2022
German translation of the claims
Search/Exam
Dec 23, 2021
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Text intended for grant (clean copy)
Search/Exam
Dec 23, 2021
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Intention to grant (signatures)
Search/Exam
Oct 13, 2020
(Electronic) Receipt
Search/Exam
Oct 13, 2020
Amended claims with annotations
Search/Exam
Oct 13, 2020
Amended description with annotations
Search/Exam
Oct 13, 2020
Claims
Search/Exam
Oct 13, 2020
Description
Search/Exam
Oct 13, 2020
Letter accompanying subsequently filed items
Search/Exam
Oct 13, 2020
Aug 18, 2020
Annex to the communication
Search/Exam
Aug 18, 2020
Communication from the Examining Division
Search/Exam
May 3, 2019
(Electronic) Receipt
Search/Exam
May 3, 2019
Amended claims with annotations
Search/Exam
May 3, 2019
Claims
Search/Exam
May 3, 2019
Letter accompanying subsequently filed items
Search/Exam
May 3, 2019
Jan 28, 2019
Annex to the communication
Search/Exam
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May 29, 2015
(Electronic) Receipt
Search/Exam
May 29, 2015
Citation for the examination procedure
Search/Exam
May 29, 2015
Claims
Search/Exam
May 29, 2015
Description
Search/Exam
May 29, 2015
Letter accompanying subsequently filed items
Search/Exam
May 29, 2015
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(Electronic) Receipt
Search/Exam
Mar 19, 2015
Letter accompanying subsequently filed items
Search/Exam
Mar 19, 2015
Feb 4, 2015
Refund of fees
Search/Exam
Nov 27, 2014
Annex to the communication
Search/Exam
Nov 27, 2014
Communication from the Examining Division
Search/Exam
Mar 11, 2014
Examination started
Search/Exam
Apr 8, 2013
(Electronic) Receipt
Search/Exam
Apr 8, 2013
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Amendments received before examination
Search/Exam
Apr 8, 2013
Letter accompanying subsequently filed items
Search/Exam
Jan 4, 2013
Nov 2, 2012
Oct 25, 2012
Priority search results copy provided by EPO
Search/Exam
Oct 24, 2012
Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Oct 12, 2012
(Electronic) Receipt
Search/Exam
Oct 12, 2012
General authorisation
Search/Exam
Oct 12, 2012
Request for entry into the European phase
Search/Exam
Oct 10, 2012
Jul 27, 2012
Information on entry into European phase
Search/Exam
Dec 1, 2011
Copy of the international search report
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Dec 1, 2011
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Sep 22, 2011
Published international application - A2
Search/Exam
Mar 17, 2011
(Electronic) Receipt
PCTRO
Mar 17, 2011
Abstract
PCTRO
Mar 17, 2011
Claims
PCTRO
Mar 17, 2011
Description
PCTRO
Mar 17, 2011
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