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The patent EP3118286 was granted to The Lubrizol on Aug 24, 2022. The application was filed on Mar 27, 2006 under application number EP16182863A. 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 |
|---|---|---|---|
| AFTON CHEMICAL | May 24, 2023 | J A KEMP | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2003092585 |
| DESCRIPTION | US2004102335 |
| DESCRIPTION | US2501731 |
| DESCRIPTION | US2616905 |
| DESCRIPTION | US2616911 |
| DESCRIPTION | US2616925 |
| DESCRIPTION | US2777874 |
| DESCRIPTION | US3172892 |
| DESCRIPTION | US3256186 |
| DESCRIPTION | US3318809 |
| DESCRIPTION | US3320162 |
| DESCRIPTION | US3365396 |
| DESCRIPTION | US3372116 |
| DESCRIPTION | US3381022 |
| DESCRIPTION | US3384585 |
| DESCRIPTION | US3471404 |
| DESCRIPTION | US3488284 |
| DESCRIPTION | US3629109 |
| DESCRIPTION | US3634515 |
| DESCRIPTION | US4191659 |
| DESCRIPTION | US4234435 |
| DESCRIPTION | US4285822 |
| DESCRIPTION | US4654403 |
| DESCRIPTION | US4670169 |
| DESCRIPTION | US4770807 |
| DESCRIPTION | US4876374 |
| DESCRIPTION | US5614480 |
| DESCRIPTION | US5811378 |
| DESCRIPTION | US5968880 |
| DESCRIPTION | US6200936 |
| DESCRIPTION | US6310009 |
| DESCRIPTION | US6559105 |
| DESCRIPTION | US6624187 |
| DESCRIPTION | WO0156968 |
| OPPOSITION | EP1795582 |
| OPPOSITION | JP2004149762 |
| OPPOSITION | JP2005002204 |
| OPPOSITION | US2003018198 |
| OPPOSITION | US2003186821 |
| OPPOSITION | US2006014651 |
| OPPOSITION | US3703536 |
| OPPOSITION | US4599433 |
| OPPOSITION | US5204012 |
| OPPOSITION | US5445749 |
| OPPOSITION | US6034040 |
| OPPOSITION | WO8704454 |
| SEARCH | EP0352067 |
| SEARCH | US2002151445 |
| SEARCH | US4137183 |
| SEARCH | US4533480 |
| SEARCH | WO8704454 |
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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Decision to grant a European patent
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Jul 26, 2022
Decision to allow further processing
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Jul 15, 2022
(Electronic) Receipt
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Jul 15, 2022
French translation of claims
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Jul 15, 2022
German translation of the claims
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Jul 15, 2022
Letter accompanying subsequently filed items
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Jul 15, 2022
Request for further processing
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May 18, 2022
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(Electronic) Receipt
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Apr 22, 2022
Letter concerning fees and payments
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Dec 14, 2021
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Intention to grant (signatures)
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Dec 14, 2021
Text intended for grant (clean copy)
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Dec 14, 2021
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(Electronic) Receipt
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Nov 18, 2021
Amended claims with annotations
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Nov 18, 2021
Amended description with annotations
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Nov 18, 2021
Claims
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Nov 18, 2021
Description
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Nov 18, 2021
Letter accompanying subsequently filed items
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(Electronic) Receipt
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Nov 5, 2021
Amended claims with annotations
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Nov 5, 2021
Amended claims with annotations
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Claims
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Nov 5, 2021
Letter accompanying subsequently filed items
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Nov 5, 2021
Letter dealing with oral proceedings
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Mar 26, 2021
Annex to the communication
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Mar 26, 2021
Summons to attend oral proceedings
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Feb 12, 2021
(Electronic) Receipt
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Feb 12, 2021
Letter accompanying subsequently filed items
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Feb 12, 2021
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Oct 22, 2020
Annex to the communication
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Oct 22, 2020
Communication from the Examining Division
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Aug 16, 2019
(Electronic) Receipt
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Aug 16, 2019
Amended claims with annotations
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Aug 16, 2019
Claims
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Aug 16, 2019
Letter accompanying subsequently filed items
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Aug 16, 2019
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Annex to the communication
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Apr 17, 2019
Communication from the Examining Division
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Apr 11, 2019
Examination started
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(Electronic) Receipt
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Jul 6, 2017
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Amended claims with annotations
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Jul 6, 2017
Amendments received before examination
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Jul 6, 2017
Letter accompanying subsequently filed items
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Jan 23, 2017
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Notification of forthcoming publication
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Dec 13, 2016
Communication to designated inventor
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Communication to designated inventor
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Dec 13, 2016
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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Dec 7, 2016
Refund of fees
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Nov 25, 2016
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European search opinion
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Nov 25, 2016
European search report
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Nov 25, 2016
Information on Search Strategy
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Nov 16, 2016
(Electronic) Receipt
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Nov 16, 2016
Designation of inventor
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Nov 16, 2016
Letter accompanying subsequently filed items
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Nov 14, 2016
Search started
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Sep 20, 2016
Deficiency in designation of inventor
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Aug 4, 2016
Abstract
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Aug 4, 2016
Aug 4, 2016
Claims
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Aug 4, 2016
Description
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Aug 4, 2016
Request for grant of a European patent
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Oct 24, 2006