Liquid Ring Pump And Method For Operating A Liquid Ring Pump

Patent No. EP2558727 (titled "Liquid Ring Pump And Method For Operating A Liquid Ring Pump") was filed by Evac on Mar 31, 2011. The application was issued on Aug 10, 2022.

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
JETS	Sep 18, 2015	KOTITSCHKE

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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Jul 14, 2022
Decision to maintain the European patent in amended form
Jul 14, 2022
Decision to maintain the European patent in amended form
Jul 8, 2022
Termination of the opposition proceedings with maintenance of patent
Jun 28, 2022
(Electronic) Receipt
Jun 28, 2022
Filing of the translation of the amended claims
Jun 28, 2022
French translation of claims
Jun 28, 2022
German translation of the claims
Jun 28, 2022
Letter accompanying subsequently filed items
Jun 13, 2022
Communication of the registration of a transfer or change of name and/or address
Jun 8, 2022
(Electronic) Receipt
Jun 8, 2022
Letter accompanying subsequently filed items
Jun 8, 2022
Submission concerning change of proprietor's address
Apr 19, 2022
Communication of bibliographic data
Apr 19, 2022
Communication to opponent concerning maintenance
Apr 19, 2022
Communication with request to file translations
Apr 7, 2022
Maintenance of the patent with the documents specified in the final decision
Dec 10, 2021
Advice of delivery
Dec 10, 2021
Advice of delivery
Dec 8, 2021
Decision of the Board of Appeal
Dec 8, 2021
F3032 Notification(s) of the decision
Dec 8, 2021
F3032 Notification(s) of the decision
Nov 2, 2021
F3013 Oral Proceedings: Forwarding minutes
Nov 2, 2021
F3013 Oral Proceedings: Forwarding minutes
Nov 2, 2021
F3316 Oral Proceedings: Minutes (Appellant: Opponent)
Oct 6, 2021
F3345 Forwarding of submissions to parties
Oct 5, 2021
(Electronic) Receipt
Oct 5, 2021
Letter accompanying subsequently filed items
Oct 5, 2021
Letter dealing with oral proceedings during the appeal procedure
Sep 29, 2021
F3345 Forwarding of submissions to parties
Sep 24, 2021
(Electronic) Receipt
Sep 24, 2021
Letter accompanying subsequently filed items
Sep 24, 2021
Oral proceedings: reply to date proposed
Sep 17, 2021
Advice of delivery
Sep 13, 2021
Oral proceedings: change of venue
Sep 13, 2021
Oral proceedings: change of venue
Sep 9, 2021
F3345 Forwarding of submissions to parties
Sep 8, 2021
(Electronic) Receipt
Sep 8, 2021
Letter dealing with oral proceedings during the appeal procedure
Sep 8, 2021
Written submission in preparation to/during oral proceedings
Apr 1, 2021
Communication of amended entries concerning the representative
Apr 1, 2021
F3345 Forwarding of submissions to parties
Mar 25, 2021
Submission concerning change of applicant's representative
Dec 29, 2020
Advice of delivery
Dec 7, 2020
Advice of delivery
Dec 4, 2020
F3017 Oral Proceedings: Notification of cancellation/postponing
Dec 4, 2020
F3017 Oral Proceedings: Notification of cancellation/postponing
Dec 3, 2020
F3014 Oral Proceedings: Order cancelling/postponing
Dec 2, 2020
(Electronic) Receipt
Dec 2, 2020
(Electronic) Receipt
Dec 2, 2020
Letter accompanying subsequently filed items
Dec 2, 2020
Letter dealing with oral proceedings during the appeal procedure
Dec 2, 2020
Letter dealing with oral proceedings during the appeal procedure
Dec 2, 2020
Written submission in preparation to/during oral proceedings
Nov 26, 2020
(Electronic) Receipt
Nov 26, 2020
Oral proceedings: Request for postponement
Nov 26, 2020
Written submission in preparation to/during oral proceedings
Nov 6, 2020
F3345 Forwarding of submissions to parties
Nov 5, 2020
(Electronic) Receipt
Nov 5, 2020
Letter accompanying subsequently filed items
Nov 5, 2020
Oral proceedings: Request for postponement
May 26, 2020
Advice of delivery
May 26, 2020
Advice of delivery
May 14, 2020
Advice of delivery
May 13, 2020
F3011.1 Oral Proceedings: summons
May 13, 2020
F3011.1 Oral Proceedings: summons
May 11, 2020
Advice of delivery
May 8, 2020
F3010 Oral proceedings: order for summons
May 8, 2020
F3017 Oral Proceedings: Notification of cancellation/postponing
May 8, 2020
F3017 Oral Proceedings: Notification of cancellation/postponing
May 8, 2020
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
May 8, 2020
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
May 7, 2020
F3014 Oral Proceedings: Order cancelling/postponing
Apr 30, 2020
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Apr 30, 2020
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Apr 28, 2020
(Electronic) Receipt
Apr 28, 2020
F3345 Forwarding of submissions to parties
Apr 28, 2020
Letter accompanying subsequently filed items
Apr 28, 2020
Oral proceedings: Request for postponement
Apr 24, 2020
(Electronic) Receipt
Apr 24, 2020
Letter accompanying subsequently filed items
Apr 24, 2020
Oral proceedings: Request for postponement
Apr 22, 2020
(Electronic) Receipt
Apr 22, 2020
Request for interpreters during oral proceedings
Apr 22, 2020
Written submission in preparation to/during oral proceedings
Apr 3, 2020
F3345 Forwarding of submissions to parties
Mar 31, 2020
(Electronic) Receipt
Mar 31, 2020
Letter accompanying subsequently filed items
Mar 31, 2020
Letter dealing with oral proceedings during the appeal procedure
Jan 31, 2020
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Jan 31, 2020
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Oct 14, 2019
Advice of delivery
Oct 14, 2019
F3936 Acknowledgement of receipt Board of Appeal
Oct 2, 2019
F3936 Acknowledgement of receipt Board of Appeal
Oct 1, 2019
Advice of delivery
Sep 27, 2019
F3011.1 Oral Proceedings: summons
Sep 27, 2019
F3011.1 Oral Proceedings: summons
Sep 24, 2019
F3010 Oral proceedings: order for summons
Jul 27, 2018
Composition of the board (T)
Apr 20, 2018
Request concerning representative opponent
Mar 16, 2018
F3345 Forwarding of submissions to parties
Mar 13, 2018
(Electronic) Receipt
Mar 13, 2018
Letter accompanying subsequently filed items
Mar 13, 2018
Patent Document cited during the appeal procedure
Mar 13, 2018
Reply to appeal
Nov 13, 2017
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Nov 8, 2017
(Electronic) Receipt
Nov 8, 2017
Letter accompanying subsequently filed items
Nov 8, 2017
Statement of grounds of appeal
Aug 22, 2017
F3204 Communication of the file number to the parties
Aug 22, 2017
F3204 Communication of the file number to the parties
Aug 17, 2017
Processing of an appeal
Aug 16, 2017
(Electronic) Receipt
Aug 16, 2017
Letter accompanying subsequently filed items
Aug 16, 2017
Notice of appeal
Jul 10, 2017
Advice of delivery
Jul 4, 2017
Advice of delivery
Jun 30, 2017
Advice of delivery
Jun 29, 2017
Advice of delivery
Jun 28, 2017
Acknowledgement of a document
Jun 28, 2017
Acknowledgement of a document
Jun 28, 2017
Annex to the communication - opposition
Jun 28, 2017
Decision of the Opposition Division and instruction
Jun 28, 2017
Druckexemplar in opposition procedure
Jun 28, 2017
Grounds for the decision (Annex) - opposition
Jun 28, 2017
Interlocutory decision in opposition proceedings
Jun 28, 2017
Internal form - Opposition/addressees
Jun 28, 2017
Internal form - Opposition/addressees
Jun 28, 2017
Means of redress
Jun 28, 2017
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jun 28, 2017
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jun 28, 2017
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jun 28, 2017
Provision of a copy of the minutes - opposition procedure
May 17, 2017
Information about the result of oral proceedings
May 16, 2017
Brief communication - Opposition proceedings
May 16, 2017
Communication of amended entries
Apr 25, 2017
Request for change of opponent's representative
Mar 27, 2017
Annex to the communication
Mar 27, 2017
Brief communication - Opposition proceedings
Mar 27, 2017
Brief communication - Opposition proceedings
Mar 20, 2017
Brief communication - Opposition proceedings
Mar 15, 2017
(Electronic) Receipt
Mar 15, 2017
General authorisation
Mar 15, 2017
Letter accompanying subsequently filed items
Mar 15, 2017
Non-patent literature cited during the opposition procedure
Mar 15, 2017
Non-patent literature cited during the opposition procedure
Mar 15, 2017
Non-patent literature cited during the opposition procedure
Mar 15, 2017
Written submission in preparation to/during oral proceedings
Jan 18, 2017
Brief communication - Opposition proceedings
Jan 12, 2017
(Electronic) Receipt
Jan 12, 2017
Letter accompanying subsequently filed items
Jan 12, 2017
Request for interpreters during oral proceedings
Dec 30, 2016
Submission concerning representation
Dec 8, 2016
Brief communication - Opposition proceedings
Dec 7, 2016
(Electronic) Receipt
Dec 7, 2016
Advice of delivery
Dec 7, 2016
Letter accompanying subsequently filed items
Dec 5, 2016
(Electronic) Receipt
Dec 5, 2016
Letter accompanying subsequently filed items
Dec 5, 2016
Written submission in preparation to/during oral proceedings
Nov 28, 2016
Submission concerning representation
Oct 19, 2016
Advice of delivery
Oct 18, 2016
Advice of delivery
Oct 17, 2016
Annex to the communication - opposition
Oct 17, 2016
Information concerning oral proceedings
Oct 17, 2016
Preparation for oral proceedings
Oct 17, 2016
Summons to attend oral proceedings
Oct 17, 2016
Summons to attend oral proceedings
May 9, 2016
Brief communication - Opposition proceedings
May 2, 2016
(Electronic) Receipt
May 2, 2016
Amended claims with annotations
May 2, 2016
Claims
May 2, 2016
Letter accompanying subsequently filed items
May 2, 2016
Patent document cited during the opposition procedure
May 2, 2016
Patent document cited during the opposition procedure
May 2, 2016
Reply of the patent proprietor to the notice(s) of opposition
Feb 18, 2016
Brief communication - Opposition proceedings
Feb 18, 2016
Grant of extension of time limit (opposition procedure)
Feb 15, 2016
(Electronic) Receipt
Feb 15, 2016
Letter accompanying subsequently filed items
Feb 15, 2016
Request for extension of time limit
Nov 2, 2015
Communication of a notice of opposition and request to file observations
Nov 2, 2015
Notice of further oppositions to opponent(s)
Sep 30, 2015
Communication of a notice of opposition - first information to patent proprietor
Sep 29, 2015
CDS Clean up - amended data concerning the representative of the applicant (Association)
Sep 18, 2015
(Electronic) Receipt
Sep 18, 2015
Any annexes (other than citation) to an opposition letter
Sep 18, 2015
Any annexes (other than citation) to an opposition letter
Sep 18, 2015
Notice of opposition
Sep 18, 2015
Patent document cited during the opposition procedure
Sep 18, 2015
Patent document cited during the opposition procedure
Sep 18, 2015
Patent document cited during the opposition procedure
Sep 18, 2015
Patent document cited during the opposition procedure
Sep 17, 2015
Submission concerning representation
Mar 19, 2015
Communication of the registration of a transfer or change of name and/or address
Mar 9, 2015
(Electronic) Receipt
Mar 9, 2015
Annexes in respect of a client data request
Mar 9, 2015
Annexes in respect of a client data request
Mar 9, 2015
Letter accompanying subsequently filed items
Mar 9, 2015
Submission concerning a transfer of rights (applicant)
Dec 24, 2014
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Nov 27, 2014
Decision to grant a European patent
Nov 14, 2014
(Electronic) Receipt
Nov 14, 2014
Filing of the translations of the claims
Nov 14, 2014
French translation of claims
Nov 14, 2014
German translation of the claims
Nov 14, 2014
Letter accompanying subsequently filed items
Jul 16, 2014
Bibliographic data of the European patent application
Jul 16, 2014
Communication about intention to grant a European patent
Jul 16, 2014
Intention to grant (signatures)
Jul 16, 2014
Text intended for grant (clean copy)
Jul 16, 2014
Text intended for grant (version for approval)
Jun 27, 2014
Examination started
May 8, 2013
Communication of amended entries concerning the representative
Apr 25, 2013
Submission concerning change of applicant's representative
Feb 22, 2013
Communication regarding comments on written opinion/amendment of application/payment of claims fee
Jan 23, 2013
Notification on forthcoming publication of bibliographic data
Nov 19, 2012
Communication to designated inventor
Oct 23, 2012
Annexes to the international preliminary examination report
Oct 23, 2012
Annexes to the international preliminary examination report
Oct 23, 2012
Copy of the international preliminary examination report
Oct 11, 2012
(Electronic) Receipt
Oct 11, 2012
Priority search results
Oct 11, 2012
Request for entry into the European phase
Aug 29, 2012
Annex to International preliminary examination report
Aug 29, 2012
International preliminary examination report
Aug 29, 2012
International preliminary examination report
Aug 29, 2012
International preliminary examination report - free text sheet
Aug 29, 2012
International preliminary examination report - free text sheet
Aug 29, 2012
International preliminary examination report - points I-VIII
Aug 29, 2012
International preliminary examination report - points I-VIII
Aug 29, 2012
Notification of documents sent to WIPO
Aug 29, 2012
Transmittal of International Preliminary Examination Report
Aug 24, 2012
Information on entry into European phase
Aug 7, 2012
Notification of election of EPO
Jul 25, 2012
Amendments of documents (Article 19 PCT)
Jun 26, 2012
Notification of documents sent to WIPO
Jun 26, 2012
Notification of receipt of demand
Jun 15, 2012
PCT demand form
Jun 15, 2012
PCT(IPEA): Amended sheet - claims
Jun 15, 2012
PCT(IPEA): Amended sheet - claims
Jun 8, 2012
Document concerning fees and payments
Jun 8, 2012
Document concerning fees and payments
Jun 8, 2012
PCT demand form
Jun 8, 2012
PCT demand form
Jun 8, 2012
PCT(IPEA): Amended sheet - claims
Jun 8, 2012
PCT(IPEA): Amended sheet - claims
Jun 8, 2012
PCT(IPEA): Amended sheet - claims
Jun 8, 2012
PCT(IPEA): Amended sheet - claims
Jun 8, 2012
PCT(IPEA): Amended sheet - claims
Jun 5, 2012
Reminder for payment period (examination fee/designation fees)
May 31, 2012
Copy of the international search report
May 31, 2012
International publication of the international search report
Apr 10, 2012
Written opinion of the ISA, boxes No. I to VIII
Apr 10, 2012
Written opinion of the ISA, cover sheet
Apr 10, 2012
Written opinion of the ISA, supplemental box
Jan 4, 2012
Annex
Nov 8, 2011
Priority document (electronically transmitted)
Oct 20, 2011
Published international application - A2
Apr 29, 2011
Drawings
Mar 31, 2011
Abstract
Mar 31, 2011
Claims
Mar 31, 2011
Description
Mar 31, 2011
Drawings

EP2558727

EVAC

Application Number: EP11718129A
Filing Date: Mar 31, 2011
Status: Patent Maintained As Amended; Jul 8, 2022
Publication Date: Aug 10, 2022
External Links: Slate, Register , Google Patents

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Liquid Ring Pump And Method For Operating A Liquid Ring Pump

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Dossier Documents

EP2558727