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The patent EP3144022 was granted to Nikkiso on May 21, 2025. The application was filed on May 12, 2015 under application number EP15793590A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 | Jun 18, 2020 | BOBBERT & PARTNER PATENTANWALTE PARTMBB | ADMISSIBLE |
| B BRAUN AVITUM | Jun 16, 2020 | WINTER | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | JP2002095741 |
| INTERNATIONAL-SEARCH-REPORT | JP2010538803 |
| INTERNATIONAL-SEARCH-REPORT | JP2012200275 |
| INTERNATIONAL-SEARCH-REPORT | JP2012524563 |
| INTERNATIONAL-SEARCH-REPORT | JP2013533793 |
| INTERNATIONAL-SEARCH-REPORT | JP2014070335 |
| INTERNATIONAL-SEARCH-REPORT | JPH06292722 |
| INTERNATIONAL-SEARCH-REPORT | JPS6270529U |
| INTERNATIONAL-SEARCH-REPORT | JPS63106445U |
| INTERNATIONAL-SEARCH-REPORT | WO2009081196 |
| OPPOSITION | DE102009024606 |
| OPPOSITION | DE102011102872 |
| OPPOSITION | DE19742633 |
| OPPOSITION | DE20113789U |
| OPPOSITION | EP0027470 |
| OPPOSITION | EP0623357 |
| OPPOSITION | EP1235614 |
| OPPOSITION | EP1576972 |
| OPPOSITION | EP1936524 |
| OPPOSITION | EP2075724 |
| OPPOSITION | JP2002095741 |
| OPPOSITION | JP2010538803 |
| OPPOSITION | JP2012200275 |
| OPPOSITION | JP2012524563 |
| OPPOSITION | JP2013533793 |
| OPPOSITION | JP2014070335 |
| OPPOSITION | JPH06292722 |
| OPPOSITION | JPS6270529U |
| OPPOSITION | JPS63106445U |
| OPPOSITION | US2002147423 |
| OPPOSITION | US2003088203 |
| OPPOSITION | US2010282834 |
| OPPOSITION | US2012123322 |
| OPPOSITION | US2012181331 |
| OPPOSITION | US2013228505 |
| OPPOSITION | US4707335 |
| OPPOSITION | US5643212 |
| OPPOSITION | US6685831 |
| OPPOSITION | US6695806 |
| OPPOSITION | WO2004064886 |
| OPPOSITION | WO2006086701 |
| OPPOSITION | WO2007144427 |
| OPPOSITION | WO2008129344 |
| OPPOSITION | WO2009006491 |
| OPPOSITION | WO2009081196 |
| OPPOSITION | WO2009081241 |
| OPPOSITION | WO2010087764 |
| OPPOSITION | WO2012097971 |
| OPPOSITION | WO2012110251 |
| OPPOSITION | WO2012162515 |
| SEARCH | US2002147423 |
| SEARCH | US2012123322 |
| SEARCH | US2012181331 |
| SEARCH | US2013228505 |
| SEARCH | US6685831 |
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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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Nov 8, 2024
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Appeal
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(Electronic) Receipt
Appeal
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General enquiry
Appeal
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(Electronic) Receipt
Appeal
Jul 9, 2024
General enquiry
Appeal
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Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Aug 4, 2022
Aug 4, 2022
Reply to appeal
Appeal
Aug 3, 2022
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Jul 28, 2022
(Electronic) Receipt
Appeal
Jul 28, 2022
Jul 28, 2022
Reply to appeal
Appeal
Mar 31, 2022
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Mar 22, 2022
(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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Appeal
Feb 9, 2022
(Electronic) Receipt
Appeal
Feb 9, 2022
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Notice of appeal
Appeal
Feb 9, 2022
Notice of appeal
Appeal
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OPPO
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Sep 30, 2019
Aug 22, 2019
Decision to grant a European patent
Search/Exam
Aug 8, 2019
(Electronic) Receipt
Search/Exam
Aug 8, 2019
Filing of the translations of the claims
Search/Exam
Aug 8, 2019
French translation of claims
Search/Exam
Aug 8, 2019
German translation of the claims
Search/Exam
Aug 8, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 24, 2019
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Intention to grant (signatures)
Search/Exam
Apr 24, 2019
Text intended for grant (clean copy)
Search/Exam
Apr 24, 2019
Apr 4, 2019
Examination started
Search/Exam
Feb 21, 2019
Feb 7, 2019
(Electronic) Receipt
Search/Exam
Feb 7, 2019
Enquiry as to the processing of the file
Search/Exam
Feb 7, 2019
Letter accompanying subsequently filed items
Search/Exam
Jun 14, 2018
Jun 14, 2018
Amended claims with annotations
Search/Exam
Jun 14, 2018
Amendments received before examination
Search/Exam
Dec 7, 2017
Nov 20, 2017
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European search opinion
Search/Exam
Nov 20, 2017
Information on Search Strategy
Search/Exam
Nov 20, 2017
Supplementary European search report
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Nov 9, 2017
Search started
Search/Exam
May 31, 2017
Payment of fees and costs
Search/Exam
Feb 22, 2017
Notification of forthcoming publication
Search/Exam
Dec 22, 2016
Dec 20, 2016
Communication to designated inventor
Search/Exam
Nov 30, 2016
(Electronic) Receipt
Search/Exam
Nov 30, 2016
Abstract
Search/Exam
Nov 30, 2016
Claims
Search/Exam
Nov 30, 2016
Description
Search/Exam
Nov 30, 2016
Drawings
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Nov 30, 2016
Request for entry into the European phase
Search/Exam
Nov 28, 2016
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Sep 23, 2016
Information on entry into European phase
Search/Exam
Dec 8, 2015
Nov 19, 2015
Copy of the international search report
Search/Exam
Nov 19, 2015
Nov 19, 2015
International publication pamphlet
Search/Exam