The patent EP2531756 was granted to Asco on Apr 23, 2025. The application was originally filed on Jan 31, 2011 under application number EP11705269A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.
| Citation Phase | Reference Text | Link |
|---|---|---|
| OPPOSITION | - "Spider- Valves VA Series", Staiger, VENTIL INNOVATIONEN, (20050300), pages 64 - 65, XP055704029 | - |
| OPPOSITION | - "Spider- Ventil", Staiger, VENTIL INNOVATIONEN, (20030000), pages 8 - 9, XP055704018 | - |
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Description
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
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Claims
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Mar 27, 2024
(Electronic) Receipt
Appeal
Mar 27, 2024
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Apr 14, 2023
Advice of delivery
Appeal
Apr 13, 2023
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Mar 27, 2023
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Jul 5, 2022
Jun 23, 2022
(Electronic) Receipt
Appeal
Jun 23, 2022
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Appeal
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Notice of appeal
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Means of redress
OPPO
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Decision to grant a European patent
Search/Exam
Jul 8, 2019
(Electronic) Receipt
Search/Exam
Jul 8, 2019
English translation of the claims
Search/Exam
Jul 8, 2019
Filing of the translations of the claims
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Jul 8, 2019
German translation of the claims
Search/Exam
Jul 8, 2019
Letter accompanying subsequently filed items
Search/Exam
Apr 11, 2019
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Intention to grant (signatures)
Search/Exam
Apr 11, 2019
Text intended for grant (clean copy)
Search/Exam
Apr 11, 2019
Mar 26, 2019
(Electronic) Receipt
Search/Exam
Mar 26, 2019
Amended claims with annotations
Search/Exam
Mar 26, 2019
Amended description with annotations
Search/Exam
Mar 26, 2019
Claims
Search/Exam
Mar 26, 2019
Description
Search/Exam
Mar 26, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 26, 2019
Jan 21, 2019
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Intention to grant (signatures)
Search/Exam
Jan 21, 2019
Text intended for grant (clean copy)
Search/Exam
Jan 21, 2019
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(Electronic) Receipt
Search/Exam
Oct 8, 2014
Abstract
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Abstract
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Oct 8, 2014
Amended claims with annotations
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Oct 8, 2014
Amended description with annotations
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Oct 8, 2014
Claims
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Oct 8, 2014
Description
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Oct 8, 2014
Letter accompanying subsequently filed items
Search/Exam
Oct 8, 2014
Jul 28, 2014
Jul 21, 2014
(Electronic) Receipt
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Jul 21, 2014
Letter accompanying subsequently filed items
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Jul 21, 2014
Apr 8, 2014
Annex to the communication
Search/Exam
Apr 8, 2014
Communication from the Examining Division
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Aug 9, 2013
Aug 9, 2013
Jul 19, 2013
Jul 3, 2013
(Electronic) Receipt
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Jul 3, 2013
Letter accompanying subsequently filed items
Search/Exam
Jul 3, 2013
Mar 13, 2013
(Electronic) Receipt
Search/Exam
Mar 13, 2013
Letter accompanying subsequently filed items
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Mar 13, 2013
Reply to Written Opinion prepared by the EPO
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Dec 18, 2012
Payment of fees and costs
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Nov 14, 2012
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Sep 25, 2012
Priority search results copy provided by EPO
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Sep 7, 2012
Communication to designated inventor
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Sep 7, 2012
Communication to designated inventor
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Sep 7, 2012
Communication to designated inventor
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Aug 21, 2012
Jul 31, 2012
(Electronic) Receipt
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Jul 31, 2012
Request for entry into the European phase
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Jun 15, 2012
Information on entry into European phase
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Aug 29, 2011
Aug 29, 2011
Aug 11, 2011
Copy of the international search report
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Aug 11, 2011
Copy of the international search report
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Aug 11, 2011
Aug 11, 2011
Published international application - A1
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Jul 22, 2011
May 4, 2011
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Mar 25, 2011
Feb 28, 2011
Abstract
PCTISA
Feb 28, 2011
Claims
PCTISA
Feb 28, 2011
Description
PCTISA
Feb 28, 2011
Drawings
PCTISA