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The patent EP3205705 was granted to Basf on Aug 12, 2020. The application was filed on Jun 6, 2014 under application number EP17159412A. The patent is currently recorded with a legal status of "Revoked".

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 |
|---|---|---|---|
| INNOSPEC | May 12, 2021 | APPLEYARD LEES | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP20140152991 |
| DESCRIPTION | DE10102913 |
| DESCRIPTION | DE10243361 |
| DESCRIPTION | DE19620262 |
| DESCRIPTION | DE2443537 |
| DESCRIPTION | DE3826608 |
| DESCRIPTION | DE3838918 |
| DESCRIPTION | DE4142241 |
| DESCRIPTION | DE4309074 |
| DESCRIPTION | DE4319672 |
| DESCRIPTION | DE4325237 |
| DESCRIPTION | DE838918 |
| DESCRIPTION | EP0061895 |
| DESCRIPTION | EP0244616 |
| DESCRIPTION | EP0261957 |
| DESCRIPTION | EP0307815 |
| DESCRIPTION | EP0310875 |
| DESCRIPTION | EP0356725 |
| DESCRIPTION | EP0452328 |
| DESCRIPTION | EP0476485 |
| DESCRIPTION | EP0548617 |
| DESCRIPTION | EP0639632 |
| DESCRIPTION | EP0700985 |
| DESCRIPTION | EP0831141 |
| DESCRIPTION | EP1226188 |
| DESCRIPTION | EP1233990 |
| DESCRIPTION | EP1254889 |
| DESCRIPTION | EP2033945 |
| DESCRIPTION | JPS6112197 |
| DESCRIPTION | US2008113890 |
| DESCRIPTION | US2013225463 |
| DESCRIPTION | US3275554 |
| DESCRIPTION | US3438757 |
| DESCRIPTION | US3454555 |
| DESCRIPTION | US3522179 |
| DESCRIPTION | US3565804 |
| DESCRIPTION | US3755433 |
| DESCRIPTION | US3822289 |
| DESCRIPTION | US4171959 |
| DESCRIPTION | US4234435 |
| DESCRIPTION | US4248719 |
| DESCRIPTION | US4491455 |
| DESCRIPTION | US4832702 |
| DESCRIPTION | US4849572 |
| DESCRIPTION | US4877416 |
| DESCRIPTION | US4904401 |
| DESCRIPTION | US5350429 |
| DESCRIPTION | US5492641 |
| DESCRIPTION | US5496383 |
| DESCRIPTION | US5567845 |
| DESCRIPTION | US5569644 |
| DESCRIPTION | US5876468 |
| DESCRIPTION | US5883196 |
| DESCRIPTION | US6165235 |
| DESCRIPTION | US6743266 |
| DESCRIPTION | WO0044857 |
| DESCRIPTION | WO0047698 |
| DESCRIPTION | WO2004035715 |
| DESCRIPTION | WO2005054314 |
| DESCRIPTION | WO2006135881 |
| DESCRIPTION | WO2008060888 |
| DESCRIPTION | WO2008138836 |
| DESCRIPTION | WO2010132259 |
| DESCRIPTION | WO2013000997 |
| DESCRIPTION | WO2013064689 |
| DESCRIPTION | WO8701126 |
| DESCRIPTION | WO9318115 |
| DESCRIPTION | WO9424231 |
| DESCRIPTION | WO9603367 |
| DESCRIPTION | WO9603479 |
| DESCRIPTION | WO9703946 |
| DESCRIPTION | WO9804656 |
| DESCRIPTION | WO9929748 |
| OPPOSITION | EP0293192 |
| OPPOSITION | EP0391735 |
| OPPOSITION | GB2496514 |
| OPPOSITION | US3962104 |
| OPPOSITION | US4071327 |
| OPPOSITION | US4675180 |
| OPPOSITION | US6143038 |
| OPPOSITION | WO2013070503 |
| OPPOSITION | WO9854119 |
| SEARCH | WO2012004300 |
| SEARCH | WO2013043332 |
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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Notice of appeal
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Notice of appeal
Appeal
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(Electronic) Receipt
Search/Exam
Jul 21, 2020
Letter accompanying subsequently filed items
Search/Exam
Jul 21, 2020
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Decision to grant a European patent
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Jul 3, 2020
(Electronic) Receipt
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Jul 3, 2020
English translation of the claims
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Jul 3, 2020
Filing of the translations of the claims
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Jul 3, 2020
French translation of claims
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Jun 17, 2020
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Intention to grant (signatures)
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Letter accompanying subsequently filed items
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(Electronic) Receipt
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Description
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Letter accompanying subsequently filed items
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Letter dealing with oral proceedings
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Dec 12, 2019
(Electronic) Receipt
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Dec 12, 2019
Amended claims with annotations
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Letter accompanying subsequently filed items
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Letter dealing with oral proceedings
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Consultation by telephone/in person
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Nov 14, 2019
Letter accompanying subsequently filed items
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Aug 26, 2019
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Letter dealing with oral proceedings
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Aug 16, 2019
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(Electronic) Receipt
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Jul 30, 2019
Letter accompanying subsequently filed items
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Jul 30, 2019
Letter dealing with oral proceedings
Search/Exam
Jul 17, 2019
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Advice of delivery
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Feb 18, 2019
Acknowledgement of a document
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Feb 15, 2019
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Feb 15, 2019
Summons to attend oral proceedings
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Oct 29, 2018
(Electronic) Receipt
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Oct 29, 2018
Letter accompanying subsequently filed items
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Oct 29, 2018
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Apr 20, 2018
Annex to the communication
Search/Exam
Apr 20, 2018
Communication from the Examining Division
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Feb 16, 2018
(Electronic) Receipt
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Feb 16, 2018
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Amended claims with annotations
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Feb 16, 2018
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Feb 16, 2018
Letter accompanying subsequently filed items
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Aug 21, 2017
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Notification of forthcoming publication
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May 30, 2017
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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May 30, 2017
Communication to designated inventor
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May 17, 2017
Refund of fees
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May 11, 2017
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European search opinion
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May 11, 2017
European search report
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May 11, 2017
Information on Search Strategy
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May 4, 2017
Modified abstract
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Apr 11, 2017
Priority search results copy provided by EPO
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Mar 6, 2017
Abstract
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Mar 6, 2017
Mar 6, 2017
Claims
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Mar 6, 2017
Description
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Mar 6, 2017
Designation of inventor
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Mar 6, 2017
Drawings
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Mar 6, 2017
Request for grant of a European patent
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Jan 19, 2016
Priority search results copy provided by EPO
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Jan 5, 2015
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