Power Quality Improvement By Active Filter

Patent No. EP2556575 (titled "Power Quality Improvement By Active Filter") was filed by Danfoss Drives on Apr 1, 2011. The application was issued on Mar 18, 2015.

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
ABB	Dec 16, 2015	ZIMMERMANN & PARTNER PATENTANWALTE MBB

Dossier Documents

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 12, 2017
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Oct 12, 2017
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Oct 9, 2017
Termination of the opposition proceedings with revocation of patent
Jul 10, 2017
Advice of delivery
Jul 4, 2017
(Electronic) Receipt
Jul 4, 2017
Advice of delivery
Jul 4, 2017
Letter accompanying subsequently filed items
Jul 3, 2017
Advice of delivery
Jun 28, 2017
Advice of delivery
Jun 27, 2017
Annex to the communication - opposition
Jun 27, 2017
Decision of the Opposition Division and instruction
Jun 27, 2017
Decision revoking the European patent
Jun 27, 2017
Grounds for the decision (Annex) - opposition
Jun 27, 2017
Internal form - Opposition/addressees
Jun 27, 2017
Internal form - Opposition/addressees
Jun 27, 2017
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jun 27, 2017
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jun 27, 2017
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jun 27, 2017
Provision of a copy of the minutes - opposition procedure
Jun 2, 2017
Information about the result of oral proceedings
Apr 19, 2017
Notification concerning the date of oral proceedings
Apr 19, 2017
Notification concerning the date of oral proceedings
Apr 6, 2017
Brief communication - Opposition proceedings
Mar 30, 2017
(Electronic) Receipt
Mar 30, 2017
Brief communication - Opposition proceedings
Mar 30, 2017
Letter accompanying subsequently filed items
Mar 30, 2017
Letter regarding the opposition procedure (no time limit)
Mar 30, 2017
Non-patent literature cited during the opposition procedure
Mar 24, 2017
(Electronic) Receipt
Mar 24, 2017
Letter accompanying subsequently filed items
Mar 24, 2017
Written submission in preparation to/during oral proceedings
Dec 7, 2016
Advice of delivery
Dec 6, 2016
(Electronic) Receipt
Dec 6, 2016
Advice of delivery
Dec 6, 2016
Letter accompanying subsequently filed items
Dec 5, 2016
Advice of delivery
Dec 2, 2016
Acknowledgement of a document
Dec 2, 2016
Acknowledgement of a document
Dec 2, 2016
Annex to the communication - opposition
Dec 2, 2016
Information concerning oral proceedings
Dec 2, 2016
Preparation for oral proceedings
Dec 2, 2016
Summons to attend oral proceedings
Dec 2, 2016
Summons to attend oral proceedings
Jul 27, 2016
Brief communication - Opposition proceedings
Jul 25, 2016
Communication concerning the filing of a power of attorney
Jul 25, 2016
Communication of amended entries concerning the representative
Jun 29, 2016
(Electronic) Receipt
Jun 29, 2016
Letter accompanying subsequently filed items
Jun 29, 2016
Submission concerning change of applicant's representative
May 31, 2016
Communication of amended entries concerning the representative
May 24, 2016
Submission concerning change of applicant's representative
Feb 1, 2016
Communication of a notice of opposition and request to file observations
Feb 1, 2016
Notice of further oppositions to opponent(s)
Dec 23, 2015
Communication of a notice of opposition - first information to patent proprietor
Dec 16, 2015
(Electronic) Receipt
Dec 16, 2015
Non-patent literature cited during the examination procedure
Dec 16, 2015
Non-patent literature cited during the examination procedure
Dec 16, 2015
Non-patent literature cited during the examination procedure
Dec 16, 2015
Non-patent literature cited during the opposition procedure
Dec 16, 2015
Notice of opposition
Dec 16, 2015
Notice of opposition
Mar 19, 2015
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Feb 19, 2015
Decision to grant a European patent
Feb 13, 2015
Communication concerning the filing of a power of attorney
Feb 13, 2015
Communication of amended entries concerning the representative
Feb 9, 2015
(Electronic) Receipt
Feb 9, 2015
Authorisation
Feb 9, 2015
French translation of claims
Feb 9, 2015
German translation of the claims
Feb 9, 2015
Letter accompanying subsequently filed items
Feb 9, 2015
Submission concerning change of applicant's representative
Oct 27, 2014
Bibliographic data of the European patent application
Oct 27, 2014
Communication about intention to grant a European patent
Oct 27, 2014
Intention to grant (signatures)
Oct 27, 2014
Text intended for grant
Sep 3, 2013
Priority search results
Sep 3, 2013
Reply to invitation to file a copy of priority search results
Jul 24, 2013
Invitation to file a copy of search results(priority)
Apr 20, 2013
Amended claims filed after receipt of (European) search report
Apr 20, 2013
Amended description filed after receipt of (European) search report
Apr 20, 2013
Amendments received before examination
Jan 16, 2013
Notification on forthcoming publication of bibliographic data
Dec 7, 2012
Communication regarding comments on written opinion/amendment of application/payment of claims fee
Nov 29, 2012
Copy of the international search report
Nov 29, 2012
International publication of the international search report
Nov 19, 2012
Communication to designated inventor
Nov 19, 2012
Communication to designated inventor
Nov 6, 2012
Copy of the international preliminary report on patentability
Nov 5, 2012
Payment of fees and costs
Nov 5, 2012
Request for entry into the European phase
Oct 8, 2012
Written opinion of the ISA, boxes No. I to VIII
Oct 8, 2012
Written opinion of the ISA, cover sheet
Oct 8, 2012
Written opinion of the ISA, supplemental box
Aug 20, 2012
Information on entry into European phase
Nov 1, 2011
Priority document (electronically transmitted)
Oct 13, 2011
Published international application - A2
Apr 11, 2011
Abstract
Apr 11, 2011
Claims
Apr 11, 2011
Description
Apr 11, 2011
Drawings

EP2556575

DANFOSS DRIVES

Application Number: EP11713662A
Filing Date: Apr 1, 2011
Status: Revoked; Apr 15, 2019
Publication Date: Mar 18, 2015
External Links: Slate, Register , Google Patents

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Power Quality Improvement By Active Filter

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Dossier Documents

EP2556575