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The patent EP3646336 was granted to Gambro Lundia on Jun 28, 2023. The application was filed on Jun 21, 2018 under application number EP18737165A. 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 |
|---|---|---|---|
| FRESENIUS MEDICAL CARE | Mar 28, 2024 | BOBBERT & PARTNER PATENTANWALTE PARTMBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP1729836 |
| DESCRIPTION | US6585675 |
| DESCRIPTION | US7435235 |
| DESCRIPTION | WO2014095073 |
| INTERNATIONAL-SEARCH-REPORT | US2012273415 |
| INTERNATIONAL-SEARCH-REPORT | WO9810856 |
| OPPOSITION | DE102012025052 |
| OPPOSITION | DE102014011671 |
| OPPOSITION | DE19655225 |
| OPPOSITION | DE4240681 |
| OPPOSITION | EP0240101 |
| OPPOSITION | EP0560368 |
| OPPOSITION | EP0692269 |
| OPPOSITION | EP1175917 |
| OPPOSITION | US2009084717 |
| OPPOSITION | US2010237011 |
| OPPOSITION | US2012273415 |
| OPPOSITION | US6814864 |
| OPPOSITION | US7435235 |
| OPPOSITION | WO0108723 |
| OPPOSITION | WO0176661 |
| OPPOSITION | WO2010121819 |
| OPPOSITION | WO2011063906 |
| OPPOSITION | WO2014095073 |
| OPPOSITION | WO2016001217 |
| OPPOSITION | WO9810856 |
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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Oct 31, 2025
Oct 31, 2025
Oct 27, 2025
(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Aug 18, 2025
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Notice of appeal
Appeal
Aug 14, 2025
(Electronic) Receipt
Appeal
Aug 14, 2025
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Notice of appeal
Appeal
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Authorisation
OPPO
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Decision to grant a European patent
Search/Exam
May 23, 2023
(Electronic) Receipt
Search/Exam
May 23, 2023
Filing of the translations of the claims
Search/Exam
May 23, 2023
French translation of claims
Search/Exam
May 23, 2023
German translation of the claims
Search/Exam
Mar 22, 2023
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Intention to grant (signatures)
Search/Exam
Mar 22, 2023
Text intended for grant (clean copy)
Search/Exam
Mar 22, 2023
Mar 15, 2023
Refund of fees
Search/Exam
Mar 7, 2023
(Electronic) Receipt
Search/Exam
Mar 7, 2023
Amended claims with annotations
Search/Exam
Mar 7, 2023
Claims
Search/Exam
Mar 7, 2023
Letter accompanying subsequently filed items
Search/Exam
Mar 7, 2023
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Intention to grant (signatures)
Search/Exam
Jan 27, 2023
Text intended for grant (clean copy)
Search/Exam
Jan 27, 2023
Oct 12, 2022
Examination started
Search/Exam
Aug 3, 2020
(Electronic) Receipt
Search/Exam
Aug 3, 2020
Aug 3, 2020
Amended claims with annotations
Search/Exam
Aug 3, 2020
Amendments received before examination
Search/Exam
Aug 3, 2020
Letter accompanying subsequently filed items
Search/Exam
Apr 8, 2020
Feb 6, 2020
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Communication to designated inventor
Search/Exam
Feb 4, 2020
Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
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Communication to designated inventor
Search/Exam
Jan 14, 2020
(Electronic) Receipt
Search/Exam
Jan 14, 2020
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Priority search results
Search/Exam
Jan 14, 2020
Request for entry into the European phase
Search/Exam
Nov 8, 2019
Information on entry into European phase
Search/Exam
Feb 5, 2019
Jan 3, 2019
Copy of the international search report
Search/Exam
Jan 3, 2019
Published international application - A1
Search/Exam
Oct 19, 2018
ISR: cited documents
PCTISA
Oct 18, 2018
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(Electronic) Receipt
PCTRO
Jun 21, 2018
Abstract
PCTRO
Jun 21, 2018
Claims
PCTRO
Jun 21, 2018
Description
PCTRO
Jun 21, 2018
Jun 21, 2018
Drawings
PCTRO
Jun 21, 2018