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The patent EP3601763 was granted to Flex Fuel Energy on Jan 19, 2022. The application was filed on Mar 19, 2018 under application number EP18712473A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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 |
|---|---|---|---|
| TEXA | Oct 17, 2022 | STUDIO TORTA | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | FR1502059 |
| INTERNATIONAL-SEARCH-REPORT | DE102015110970 |
| INTERNATIONAL-SEARCH-REPORT | EP3023613 |
| INTERNATIONAL-SEARCH-REPORT | EP3064740 |
| INTERNATIONAL-SEARCH-REPORT | US2009133718 |
| INTERNATIONAL-SEARCH-REPORT | US2201774 |
| OPPOSITION | FR2880069 |
| OPPOSITION | JP2008138623 |
| OPPOSITION | TWM535739U |
| OPPOSITION | US2006272625 |
| OPPOSITION | US2008283098 |
| OPPOSITION | US2009133718 |
| OPPOSITION | US2016010547 |
| OPPOSITION | US2016305372 |
| OPPOSITION | US2018313264 |
| OPPOSITION | WO2008050025 |
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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Nov 3, 2025
Oct 29, 2025
(Electronic) Receipt
Appeal
Oct 29, 2025
Oct 28, 2025
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Jul 4, 2025
Jul 1, 2025
(Electronic) Receipt
Appeal
Jul 1, 2025
Jul 1, 2025
Jul 1, 2025
Reply to appeal
Appeal
Jun 26, 2025
(Electronic) Receipt
Appeal
Jun 26, 2025
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Claims
Appeal
Jun 26, 2025
Claims
Appeal
Jun 26, 2025
Claims
Appeal
Jun 26, 2025
Claims
Appeal
Jun 26, 2025
Claims
Appeal
Jun 26, 2025
Claims
Appeal
Jun 26, 2025
Claims
Appeal
Jun 26, 2025
Claims
Appeal
Jun 26, 2025
Claims
Appeal
Jun 26, 2025
Claims
Appeal
Jun 26, 2025
Claims
Appeal
Jun 26, 2025
Claims
Appeal
Jun 26, 2025
Jun 26, 2025
Reply to appeal
Appeal
Mar 12, 2025
Mar 7, 2025
(Electronic) Receipt
Appeal
Mar 7, 2025
Mar 7, 2025
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Nov 12, 2024
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Means of redress
OPPO
Nov 8, 2024
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Oct 25, 2024
(Electronic) Receipt
Appeal
Oct 25, 2024
Notice of appeal
Appeal
Sep 24, 2024
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Description
OPPO
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Description
OPPO
May 13, 2024
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Nov 22, 2022
Annex
OPPO
Nov 22, 2022
Nov 3, 2022
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Oct 26, 2022
Oct 17, 2022
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Feb 1, 2022
Dec 23, 2021
Decision to grant a European patent
Search/Exam
Dec 9, 2021
(Electronic) Receipt
Search/Exam
Dec 9, 2021
English translation of the claims
Search/Exam
Dec 9, 2021
Filing of the translations of the claims
Search/Exam
Dec 9, 2021
German translation of the claims
Search/Exam
Sep 17, 2021
Sep 17, 2021
Sep 17, 2021
Intention to grant (signatures)
Search/Exam
Sep 17, 2021
Text intended for grant (clean copy)
Search/Exam
Sep 17, 2021
May 20, 2021
Claims
Search/Exam
May 20, 2021
Mar 22, 2021
Mar 16, 2021
Nov 18, 2020
Annex to the communication
Search/Exam
Nov 18, 2020
Communication from the Examining Division
Search/Exam
Nov 12, 2020
Examination started
Search/Exam
May 25, 2020
Submission concerning representation
Search/Exam
Jan 9, 2020
Oct 29, 2019
Oct 25, 2019
Communication to designated inventor
Search/Exam
Oct 22, 2019
Priority search results copy provided by EPO
Search/Exam
Oct 8, 2019
Sep 16, 2019
(Electronic) Receipt
Search/Exam
Sep 16, 2019
Request for entry into the European phase
Search/Exam
Jul 31, 2019
Information on entry into European phase
Search/Exam
Oct 16, 2018
Sep 27, 2018
Copy of the international search report
Search/Exam
Sep 27, 2018
Copy of the international search report
Search/Exam
Sep 27, 2018
Published international application - A1
Search/Exam
Jul 31, 2018
ISR: cited documents
PCTISA
Jul 31, 2018
Jul 30, 2018
Jul 30, 2018
Jul 30, 2018
Apr 6, 2018
Mar 29, 2018
Abstract
PCTISA
Mar 29, 2018
Claims
PCTISA
Mar 29, 2018
Description
PCTISA
Mar 29, 2018
Drawings
PCTISA
Mar 29, 2018