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The patent EP3601907 was granted to Danfoss on Apr 20, 2022. The application was filed on Mar 23, 2018 under application number EP18715561A. 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 |
|---|---|---|---|
| BITZER KUHLMASCHINENBAU | Jan 19, 2023 | MANITZ FINSTERWALD PATENT UND RECHTSANWALTSPARTNERSCHAFT MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | EP2718642 |
| INTERNATIONAL-SEARCH-REPORT | US1836318 |
| INTERNATIONAL-SEARCH-REPORT | US2015330691 |
| INTERNATIONAL-SEARCH-REPORT | US3788394 |
| INTERNATIONAL-SEARCH-REPORT | WO2014106030 |
| OPPOSITION | AU2016101310 |
| OPPOSITION | EP0217605 |
| OPPOSITION | US2016341451 |
| OPPOSITION | US3600904 |
| OPPOSITION | WO2012168544 |
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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Jan 9, 2026
(Electronic) Receipt
Appeal
Jan 9, 2026
Jan 9, 2026
Dec 12, 2025
Dec 9, 2025
(Electronic) Receipt
Appeal
Dec 9, 2025
Dec 9, 2025
Oct 24, 2025
(Electronic) Receipt
Appeal
Oct 24, 2025
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Reply to appeal
Appeal
Jul 21, 2025
Jun 27, 2025
(Electronic) Receipt
Appeal
Jun 27, 2025
Jun 27, 2025
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May 23, 2025
(Electronic) Receipt
Appeal
May 23, 2025
May 23, 2025
Notice of appeal
Appeal
Mar 25, 2025
Mar 25, 2025
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Means of redress
OPPO
Mar 25, 2025
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May 4, 2022
Mar 24, 2022
Decision to grant a European patent
Search/Exam
Mar 9, 2022
(Electronic) Receipt
Search/Exam
Mar 9, 2022
Filing of the translations of the claims
Search/Exam
Mar 9, 2022
French translation of claims
Search/Exam
Mar 9, 2022
German translation of the claims
Search/Exam
Mar 9, 2022
Letter accompanying subsequently filed items
Search/Exam
Jan 5, 2022
Jan 5, 2022
Jan 5, 2022
Intention to grant (signatures)
Search/Exam
Jan 5, 2022
Text intended for grant (clean copy)
Search/Exam
Jan 5, 2022
Nov 8, 2021
Examination started
Search/Exam
Apr 15, 2020
(Electronic) Receipt
Search/Exam
Apr 15, 2020
Apr 15, 2020
Amended claims with annotations
Search/Exam
Apr 15, 2020
Amendments received before examination
Search/Exam
Apr 15, 2020
Letter accompanying subsequently filed items
Search/Exam
Jan 9, 2020
Nov 7, 2019
Nov 5, 2019
Communication to designated inventor
Search/Exam
Nov 5, 2019
Communication to designated inventor
Search/Exam
Nov 5, 2019
Communication to designated inventor
Search/Exam
Oct 14, 2019
Sep 24, 2019
(Electronic) Receipt
Search/Exam
Sep 24, 2019
Request for entry into the European phase
Search/Exam
Aug 9, 2019
Information on entry into European phase
Search/Exam
Oct 24, 2018
Oct 4, 2018
Copy of the international search report
Search/Exam
Oct 4, 2018
Published international application - A1
Search/Exam
Jun 19, 2018
Jun 19, 2018
Jun 19, 2018
May 24, 2018
Apr 20, 2018
Mar 23, 2018
(Electronic) Receipt
PCTRO
Mar 23, 2018
Abstract
PCTRO
Mar 23, 2018
Claims
PCTRO
Mar 23, 2018
Description
PCTRO
Mar 23, 2018
Mar 23, 2018
Drawings
PCTRO
Mar 23, 2018