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The patent EP2970752 was granted to Chevron USA on Dec 13, 2017. The application was filed on Feb 25, 2014 under application number EP14709839A. 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 |
|---|---|---|---|
| SASOL GERMANY | Sep 12, 2018 | MULLER SCHUPFNER & PARTNER PATENT UND RECHTSANWALTSPARTNERSCHAFT MBB MUC | - |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2757139 |
| DESCRIPTION | US4518810 |
| DESCRIPTION | US5298038 |
| DESCRIPTION | US5387374 |
| DESCRIPTION | US5717119 |
| DESCRIPTION | US6060443 |
| DESCRIPTION | US7770641 |
| DESCRIPTION | US8211837 |
| INTERNATIONAL-SEARCH-REPORT | EP0037542 |
| INTERNATIONAL-SEARCH-REPORT | US2009279281 |
| INTERNATIONAL-SEARCH-REPORT | US2011263467 |
| INTERNATIONAL-SEARCH-REPORT | WO2013060622 |
| INTERNATIONAL-SEARCH-REPORT | WO2013060623 |
| INTERNATIONAL-SEARCH-REPORT | WO2013060670 |
| INTERNATIONAL-SEARCH-REPORT | WO2013120757 |
| OPPOSITION | US4518810 |
| OPPOSITION | US7119125 |
| OPPOSITION | WO2011054483 |
| OPPOSITION | WO2011130310 |
| OPPOSITION | WO2011131549 |
| OPPOSITION | WO2013060623 |
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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Mar 4, 2022
Feb 8, 2022
Advice of delivery
Appeal
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Advice of delivery
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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General enquiry
Appeal
Sep 2, 2021
Advice of delivery
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Feb 24, 2020
Feb 18, 2020
(Electronic) Receipt
Appeal
Feb 18, 2020
Claims
Appeal
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Notice of appeal
Appeal
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Claims
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OPPO
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OPPO
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OPPO
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Feb 5, 2018
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Nov 16, 2017
Decision to grant a European patent
Search/Exam
Nov 3, 2017
Nov 3, 2017
Nov 3, 2017
Intention to grant (signatures)
Search/Exam
Nov 3, 2017
Text intended for grant (clean copy)
Search/Exam
Nov 3, 2017
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Sep 26, 2017
(Electronic) Receipt
Search/Exam
Sep 26, 2017
Claims
Search/Exam
Sep 26, 2017
French translation of claims
Search/Exam
Sep 26, 2017
German translation of the claims
Search/Exam
Sep 26, 2017
Letter accompanying subsequently filed items
Search/Exam
Sep 26, 2017
May 16, 2017
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Intention to grant (signatures)
Search/Exam
May 16, 2017
Text intended for grant (clean copy)
Search/Exam
May 16, 2017
Mar 8, 2017
Examination started
Search/Exam
May 23, 2016
(Electronic) Receipt
Search/Exam
May 23, 2016
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Amended claims with annotations
Search/Exam
May 23, 2016
Amendments received before examination
Search/Exam
May 23, 2016
Letter accompanying subsequently filed items
Search/Exam
Dec 23, 2015
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Communication to designated inventor
Search/Exam
Oct 20, 2015
Communication to designated inventor
Search/Exam
Oct 2, 2015
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Jul 29, 2015
Information on entry into European phase
Search/Exam
Jul 24, 2015
(Electronic) Receipt
Search/Exam
Jul 24, 2015
Request for entry into the European phase
Search/Exam
Oct 14, 2014
Sep 25, 2014
Copy of the international search report
Search/Exam
Sep 25, 2014
Published international application - A1
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Jun 11, 2014
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