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The patent EP2171021 was granted to Innospec on Sep 4, 2024. The application was originally filed on Jul 21, 2008 under application number EP08788580A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE10208326 |
| DESCRIPTION | DE20110995U |
| DESCRIPTION | EP0743972 |
| DESCRIPTION | EP0743974 |
| DESCRIPTION | GB2248068 |
| DESCRIPTION | GB2254610 |
| DESCRIPTION | GB733129 |
| DESCRIPTION | GB763550 |
| DESCRIPTION | US2680756 |
| DESCRIPTION | US2804468 |
| DESCRIPTION | US2818417 |
| DESCRIPTION | US3127351 |
| DESCRIPTION | US3578421 |
| DESCRIPTION | US3652238 |
| DESCRIPTION | US3677725 |
| DESCRIPTION | US3758283 |
| DESCRIPTION | US3811848 |
| DESCRIPTION | US3917466 |
| DESCRIPTION | US3961916 |
| DESCRIPTION | US4252542 |
| DESCRIPTION | US4259087 |
| DESCRIPTION | US4333741 |
| DESCRIPTION | US4388452 |
| DESCRIPTION | US4416668 |
| DESCRIPTION | US4491651 |
| DESCRIPTION | US4537601 |
| DESCRIPTION | US5207891 |
| DESCRIPTION | US5672183 |
| DESCRIPTION | US5863466 |
| DESCRIPTION | US6391070 |
| DESCRIPTION | US6793695 |
| INTERNATIONAL-SEARCH-REPORT | US2006020065 |
| INTERNATIONAL-SEARCH-REPORT | US3677725 |
| INTERNATIONAL-SEARCH-REPORT | US3811848 |
| INTERNATIONAL-SEARCH-REPORT | US3917466 |
| INTERNATIONAL-SEARCH-REPORT | US4182810 |
| INTERNATIONAL-SEARCH-REPORT | US4491651 |
| INTERNATIONAL-SEARCH-REPORT | US5071445 |
| INTERNATIONAL-SEARCH-REPORT | US5214224 |
| INTERNATIONAL-SEARCH-REPORT | US5254138 |
| INTERNATIONAL-SEARCH-REPORT | US6180683 |
| INTERNATIONAL-SEARCH-REPORT | US6488724 |
| INTERNATIONAL-SEARCH-REPORT | WO03072259 |
| INTERNATIONAL-SEARCH-REPORT | WO2007007191 |
| INTERNATIONAL-SEARCH-REPORT | WO2007072005 |
| OPPOSITION | EP1767611 |
| OPPOSITION | US2005183325 |
| OPPOSITION | US3677725 |
| OPPOSITION | US3758283 |
| OPPOSITION | US3811848 |
| OPPOSITION | US3917466 |
| OPPOSITION | US4284415 |
| OPPOSITION | US5214224 |
| OPPOSITION | US5611869 |
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
Aug 8, 2024
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Refund of fees
Appeal
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(Electronic) Receipt
Appeal
May 24, 2024
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Withdrawal of an appeal
Appeal
Mar 14, 2024
Mar 11, 2024
(Electronic) Receipt
Appeal
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Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Sep 4, 2023
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Notice of appeal
Appeal
Sep 4, 2023
Notice of appeal
Appeal
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Search/Exam
Feb 25, 2020
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Text intended for grant (clean copy)
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(Electronic) Receipt
Search/Exam
Feb 13, 2020
Amended description with annotations
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Feb 13, 2020
Description
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Feb 13, 2020
French translation of claims
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Feb 13, 2020
German translation of the claims
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Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Oct 21, 2019
Text intended for grant (clean copy)
Search/Exam
Oct 21, 2019
Mar 18, 2019
(Electronic) Receipt
Search/Exam
Mar 18, 2019
Amended claims with annotations
Search/Exam
Mar 18, 2019
Claims
Search/Exam
Mar 18, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 18, 2019
Nov 23, 2018
Annex to the communication
Search/Exam
Nov 23, 2018
Communication from the Examining Division
Search/Exam
Mar 8, 2016
(Electronic) Receipt
Search/Exam
Mar 8, 2016
Amended claims with annotations
Search/Exam
Mar 8, 2016
Claims
Search/Exam
Mar 8, 2016
Letter accompanying subsequently filed items
Search/Exam
Mar 8, 2016
Feb 12, 2016
Submission concerning representation
Search/Exam
Nov 24, 2015
Annex to the communication
Search/Exam
Nov 24, 2015
Communication from the Examining Division
Search/Exam
Nov 17, 2015
Examination started
Search/Exam
Jun 9, 2015
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(Electronic) Receipt
Search/Exam
Jun 2, 2015
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Letter accompanying subsequently filed items
Search/Exam
Feb 20, 2015
Feb 13, 2015
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Letter concerning fees and payments
Search/Exam
Mar 10, 2010
Mar 1, 2010
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(Electronic) Receipt
Search/Exam
Jan 22, 2010
Jan 22, 2010
Amended claims with annotations
Search/Exam
Jan 22, 2010
Request for entry into the European phase
Search/Exam
Dec 4, 2009
Information on entry into European phase
Search/Exam
Mar 12, 2009
Copy of the international search report
Search/Exam
Mar 12, 2009
Feb 19, 2009
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Jan 29, 2009
Published international application - A2
Search/Exam
Jan 9, 2009
Jan 9, 2009
Jan 9, 2009
Jul 21, 2008
Abstract
PCTISA
Jul 21, 2008
Annex
PCTISA
Jul 21, 2008
Claims
PCTISA
Jul 21, 2008
Description
PCTISA