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The patent EP2532409 was granted to Neufilter on Jan 10, 2024. The application was filed on Jun 4, 2012 under application number EP12170654A. 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 |
|---|---|---|---|
| ACS GESELLSCHAFT FUR LUFT UND ENTSTAUBUNGSTECH NIK MAMMUT FILTER | Jul 12, 2022 | SCHULTE & SCHULTE | INTERVENTION ADMISSIBLE |
| FILCOM UMWELTTECHNOLOGIE GESELLSCHAFT | Nov 14, 2018 | SCHWARZ & PARTNER PATENTANWALTE | ADMISSIBLE |
| DURR SYSTEMS | Nov 13, 2018 | WALLINGER RICKER SCHLOTTER TOSTMANN | ADMISSIBLE |
| COLUMBUS INDUSTRIES | Nov 12, 2018 | GOTZ | ADMISSIBLE |
| WENKER | Nov 11, 2018 | REICHERT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| OPPOSITION | DE102004018184 |
| OPPOSITION | DE102009034863 |
| OPPOSITION | DE1970842U |
| OPPOSITION | DE202015104109U |
| OPPOSITION | DE2508187 |
| OPPOSITION | DE2557444 |
| OPPOSITION | DE2800668 |
| OPPOSITION | DE3439255 |
| OPPOSITION | DE3542963 |
| OPPOSITION | DE3617817 |
| OPPOSITION | DE3622629 |
| OPPOSITION | DE3809318 |
| OPPOSITION | DE3912958 |
| OPPOSITION | DE4016029 |
| OPPOSITION | DE7830621U |
| OPPOSITION | EP0067422 |
| OPPOSITION | EP0082106 |
| OPPOSITION | GB1032742 |
| OPPOSITION | GB1075732 |
| OPPOSITION | GB1504824 |
| OPPOSITION | GB1564872 |
| OPPOSITION | GB2196874 |
| OPPOSITION | NL9101369 |
| OPPOSITION | US2004088958 |
| OPPOSITION | US2004226274 |
| OPPOSITION | US2006000196 |
| OPPOSITION | US2009064862 |
| OPPOSITION | US2009184504 |
| OPPOSITION | US2952333 |
| OPPOSITION | US3941571 |
| OPPOSITION | US3961924 |
| OPPOSITION | US4504290 |
| OPPOSITION | US5500271 |
| OPPOSITION | WO03084638 |
| OTHER | US3961924 |
| SEARCH | DE2508187 |
| SEARCH | NL9101369 |
| SEARCH | WO03084638 |
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.
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Decision to grant a European patent
Search/Exam
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(Electronic) Receipt
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English translation of the claims
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Filing of the translations of the claims
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French translation of claims
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Dec 21, 2017
Letter accompanying subsequently filed items
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Oct 17, 2017
Oct 17, 2017
Oct 17, 2017
Intention to grant (signatures)
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Oct 17, 2017
Text intended for grant (clean copy)
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Oct 17, 2017
Oct 11, 2017
Sep 20, 2017
(Electronic) Receipt
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Sep 20, 2017
Amended claims with annotations
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Sep 20, 2017
Amended description with annotations
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Sep 20, 2017
Claims
Search/Exam
Sep 20, 2017
Description
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Sep 20, 2017
Letter accompanying subsequently filed items
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Sep 20, 2017
Letter dealing with oral proceedings
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Aug 14, 2017
Advice of delivery
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Aug 10, 2017
(Electronic) Receipt
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Aug 10, 2017
Acknowledgement of a document
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Aug 10, 2017
Letter accompanying subsequently filed items
Search/Exam
Aug 9, 2017
Acknowledgement of a document
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Aug 9, 2017
Annex to the communication
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Aug 9, 2017
Preparation for oral proceedings
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Aug 9, 2017
Summons to attend oral proceedings
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Apr 18, 2017
(Electronic) Receipt
Search/Exam
Apr 18, 2017
Letter accompanying subsequently filed items
Search/Exam
Apr 18, 2017
Feb 9, 2017
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(Electronic) Receipt
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Feb 3, 2017
Letter accompanying subsequently filed items
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Feb 3, 2017
Oct 12, 2016
Annex to the communication
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Oct 12, 2016
Communication from the Examining Division
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Oct 10, 2016
Oct 10, 2016
Sep 28, 2016
Observations by third parties
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Jul 5, 2016
(Electronic) Receipt
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Jul 5, 2016
Amended claims with annotations
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Jul 5, 2016
Claims
Search/Exam
Jul 5, 2016
Letter accompanying subsequently filed items
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Jul 5, 2016
Jun 1, 2016
May 25, 2016
(Electronic) Receipt
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May 25, 2016
Letter accompanying subsequently filed items
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May 25, 2016
Jan 27, 2016
Annex to the communication
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Jan 27, 2016
Communication from the Examining Division
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Nov 16, 2015
(Electronic) Receipt
Search/Exam
Nov 16, 2015
Amended claims with annotations
Search/Exam
Nov 16, 2015
Claims
Search/Exam
Nov 16, 2015
Letter accompanying subsequently filed items
Search/Exam
Nov 16, 2015
Sep 18, 2015
Sep 14, 2015
(Electronic) Receipt
Search/Exam
Sep 14, 2015
Letter accompanying subsequently filed items
Search/Exam
Sep 14, 2015
May 15, 2015
Annex to the communication
Search/Exam
May 15, 2015
Communication from the Examining Division
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May 8, 2015
May 8, 2015
Apr 24, 2015
Citation filed by a third party
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Apr 24, 2015
Non-scannable object
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Apr 24, 2015
Observations by third parties
Search/Exam
Sep 19, 2014
Decision to allow further processing
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Aug 29, 2014
(Electronic) Receipt
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Aug 29, 2014
Amended claims with annotations
Search/Exam
Aug 29, 2014
Claims
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Aug 29, 2014
Letter accompanying subsequently filed items
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Aug 29, 2014
Aug 29, 2014
Aug 29, 2014
Request for further processing
Search/Exam
Jul 1, 2014
Mar 24, 2014
Mar 18, 2014
(Electronic) Receipt
Search/Exam
Mar 18, 2014
Letter accompanying subsequently filed items
Search/Exam
Mar 18, 2014
Feb 6, 2014
Feb 4, 2014
Submission concerning representation
Search/Exam
Nov 19, 2013
Annex to the communication
Search/Exam
Nov 19, 2013
Communication from the Examining Division
Search/Exam
Nov 13, 2013
Examination started
Search/Exam
May 14, 2013
(Electronic) Receipt
Search/Exam
May 14, 2013
May 14, 2013
Amended claims with annotations
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May 14, 2013
May 14, 2013
Amended description with annotations
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May 14, 2013
Amendments received before examination
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May 14, 2013
Letter accompanying subsequently filed items
Search/Exam
May 14, 2013
Matter concerning the application
Search/Exam
Dec 17, 2012
Nov 14, 2012
Notification of forthcoming publication
Search/Exam
Oct 8, 2012
Oct 8, 2012
European search opinion
Search/Exam
Oct 8, 2012
European search report
Search/Exam
Sep 28, 2012
Communication to designated inventor
Search/Exam
Sep 24, 2012
(Electronic) Receipt
Search/Exam
Sep 24, 2012
Letter accompanying subsequently filed items
Search/Exam
Sep 24, 2012
Letter concerning the inventor
Search/Exam
Sep 19, 2012
Sep 10, 2012
Letter which had not been notified
Search/Exam
Aug 20, 2012
Communication to designated inventor
Search/Exam
Jun 25, 2012
(Electronic) Receipt
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Jun 25, 2012
Letter accompanying subsequently filed items
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Jun 21, 2012
Letter concerning the priority
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Jun 21, 2012
Priority document
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Jun 4, 2012
Abstract
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Jun 4, 2012
Jun 4, 2012
Claims
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Jun 4, 2012
Description
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Jun 4, 2012
Designation of inventor
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Jun 4, 2012
Drawings
Search/Exam
Jun 4, 2012
Priority search results
Search/Exam
Jun 4, 2012
Request for grant of a European patent
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