Barrier Sealing System For Centrifugal Compressors

Patent No. EP1995465 (titled "Barrier Sealing System For Centrifugal Compressors") was filed by General Electric on May 23, 2008. The application was issued on Aug 2, 2017.

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
UNITED	May 2, 2018	DEHNS

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 11, 2023
Decision of the Board of Appeal
Oct 11, 2023
F3032 Notification(s) of the decision
Oct 11, 2023
F3032 Notification(s) of the decision
Oct 5, 2023
F3017 Oral Proceedings: Notification of cancellation/postponing
Oct 5, 2023
F3017 Oral Proceedings: Notification of cancellation/postponing
Sep 29, 2023
F3014 Oral Proceedings: Order cancelling/postponing
Sep 19, 2023
F3345 Forwarding of submissions to parties
Sep 14, 2023
(Electronic) Receipt
Sep 14, 2023
Letter accompanying subsequently filed items
Sep 14, 2023
Withdrawal of a request for oral proceedings
Aug 3, 2023
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Aug 3, 2023
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Jun 22, 2023
Miscellaneous requests concerning client data
Feb 6, 2023
F3022 Oral proceedings: change of board composition
Feb 6, 2023
F3022 Oral proceedings: change of board composition
Feb 1, 2023
F3303.16 Change of composition of the Board (T)
May 13, 2022
F3011.1 Oral Proceedings: summons
May 13, 2022
F3011.1 Oral Proceedings: summons
May 10, 2022
F3010 Oral proceedings: order for summons
Feb 10, 2022
F3022 Oral proceedings: change of board composition
Feb 10, 2022
F3022 Oral proceedings: change of board composition
Feb 7, 2022
F3303.16 Change of composition of the Board (T)
Oct 14, 2020
F3345 Forwarding of submissions to parties
Oct 12, 2020
Reply to appeal
Oct 9, 2020
Reply to appeal
Jul 3, 2020
Composition of the board (T)
Jun 9, 2020
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
May 29, 2020
(Electronic) Receipt
May 29, 2020
Letter accompanying subsequently filed items
May 29, 2020
Request for change of name -opponent
May 29, 2020
Statement of grounds of appeal
Feb 17, 2020
F3204 Communication of the file number to the parties
Feb 10, 2020
(Electronic) Receipt
Feb 10, 2020
Letter accompanying subsequently filed items
Feb 10, 2020
Notice of appeal
Jan 15, 2020
(Electronic) Receipt
Jan 15, 2020
Advice of delivery
Jan 10, 2020
Communication about missing advice of delivery
Dec 18, 2019
Advice of delivery
Nov 29, 2019
Acknowledgement of a document
Nov 29, 2019
Acknowledgement of a document
Nov 29, 2019
Annex to the communication - opposition
Nov 29, 2019
Decision of the Opposition Division and instruction
Nov 29, 2019
Decision rejecting the opposition
Nov 29, 2019
Grounds for the decision (Annex) - opposition
Nov 29, 2019
Internal form - Opposition/addressees
Nov 29, 2019
Internal form - Opposition/addressees
Nov 29, 2019
Means of redress
Nov 29, 2019
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Nov 29, 2019
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Nov 29, 2019
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Nov 29, 2019
Provision of a copy of the minutes - opposition procedure
Nov 11, 2019
Information about the result of oral proceedings
Oct 24, 2019
Brief communication - Opposition proceedings
Oct 18, 2019
(Electronic) Receipt
Oct 18, 2019
Request for interpreters during oral proceedings
Jun 18, 2019
(Electronic) Receipt
Jun 18, 2019
Advice of delivery
Jun 6, 2019
Advice of delivery
Jun 6, 2019
Advice of delivery
May 22, 2019
Advice of delivery
May 14, 2019
Acknowledgement of a document
May 14, 2019
Acknowledgement of a document
May 14, 2019
Information concerning oral proceedings
May 14, 2019
Summons to attend oral proceedings
May 14, 2019
Summons to attend oral proceedings
May 13, 2019
Brief communication - Opposition proceedings
May 13, 2019
Confirmation of revocation of automatic debit order
May 10, 2019
Notification concerning the date of oral proceedings
May 10, 2019
Notification concerning the date of oral proceedings
May 8, 2019
Letter relating to the automatic debiting procedure
May 7, 2019
(Electronic) Receipt
May 7, 2019
Citation in opposition procedure
May 7, 2019
Citation in opposition procedure
May 7, 2019
Letter accompanying subsequently filed items
May 7, 2019
Letter regarding the opposition procedure (no time limit)
May 6, 2019
Communication of amended entries concerning the representative
May 2, 2019
Brief communication - Opposition proceedings
May 2, 2019
Brief communication - Opposition proceedings
Apr 26, 2019
(Electronic) Receipt
Apr 26, 2019
Letter accompanying subsequently filed items
Apr 26, 2019
Letter regarding the opposition procedure (no time limit)
Apr 25, 2019
(Electronic) Receipt
Apr 25, 2019
Request for interpreters during oral proceedings
Apr 23, 2019
Submission concerning change of applicant's representative
Apr 18, 2019
Brief communication - Opposition proceedings
Apr 15, 2019
(Electronic) Receipt
Apr 15, 2019
Letter accompanying subsequently filed items
Apr 15, 2019
Oral proceedings: reply to date proposed
Jan 24, 2019
Advice of delivery
Dec 21, 2018
Communication about missing advice of delivery
Dec 4, 2018
Advice of delivery
Dec 4, 2018
Advice of delivery
Nov 23, 2018
Acknowledgement of a document
Nov 23, 2018
Acknowledgement of a document
Nov 23, 2018
Annex to the communication - opposition
Nov 23, 2018
Information concerning oral proceedings
Nov 23, 2018
Summons to attend oral proceedings
Nov 23, 2018
Summons to attend oral proceedings
Sep 24, 2018
Brief communication - Opposition proceedings
Sep 19, 2018
(Electronic) Receipt
Sep 19, 2018
Letter accompanying subsequently filed items
Sep 19, 2018
Reply of the patent proprietor to the notice(s) of opposition
May 17, 2018
Communication of a notice of opposition and request to file observations
May 17, 2018
Notice of further oppositions to opponent(s)
May 8, 2018
Communication of a notice of opposition - first information to patent proprietor
May 2, 2018
(Electronic) Receipt
May 2, 2018
Notice of opposition
May 2, 2018
Notice of opposition
May 2, 2018
Patent document cited during the opposition procedure
May 2, 2018
Patent document cited during the opposition procedure
May 2, 2018
Patent document cited during the opposition procedure
May 2, 2018
Patent document cited during the opposition procedure
May 2, 2018
Patent document cited during the opposition procedure
May 2, 2018
Patent document cited during the opposition procedure
Aug 2, 2017
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jul 6, 2017
Decision to grant a European patent
Jun 22, 2017
(Electronic) Receipt
Jun 22, 2017
Filing of the translations of the claims
Jun 22, 2017
French translation of claims
Jun 22, 2017
German translation of the claims
May 30, 2017
Bibliographic data of the European patent application
May 30, 2017
Communication about intention to grant a European patent
May 30, 2017
Intention to grant (signatures)
May 30, 2017
Text intended for grant (clean copy)
May 30, 2017
Text intended for grant (version for approval)
Jan 13, 2017
(Electronic) Receipt
Jan 13, 2017
Authorisation
Jan 13, 2017
Letter accompanying subsequently filed items
Jan 13, 2017
Reply to communication from the Examining Division
Sep 9, 2016
Annex to the communication
Sep 9, 2016
Communication from the Examining Division
Mar 21, 2016
(Electronic) Receipt
Mar 21, 2016
Amended claims with annotations
Mar 21, 2016
Amended description with annotations
Mar 21, 2016
Claims
Mar 21, 2016
Description
Mar 21, 2016
Letter accompanying subsequently filed items
Mar 21, 2016
Reply to communication from the Examining Division
Jan 25, 2016
Grant of extension of time limit (examination procedure)
Jan 20, 2016
(Electronic) Receipt
Jan 20, 2016
Letter accompanying subsequently filed items
Sep 10, 2015
Annex to the communication
Sep 10, 2015
Communication from the Examining Division
Dec 19, 2014
Application deemed to be withdrawn (non-payment of renewal fee)
Jun 24, 2014
Late/insufficient payment of the renewal fee without additional fee
Jul 3, 2013
CDS Clean up - amended data concerning the representative for the applicant
Jul 1, 2013
Submission concerning representation
Nov 9, 2009
Claims
Nov 9, 2009
Reply to communication from the Examining Division
Nov 2, 2009
Claims
Nov 2, 2009
Reply to communication from the Examining Division
Jul 28, 2009
CDS Clean up - amended data concerning the representative for the applicant
Jun 22, 2009
Communication from the Examining Division
Nov 28, 2008
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
Oct 29, 2008
Notification of forthcoming publication
Sep 22, 2008
Communication regarding the transmission of the European search report
Sep 22, 2008
European search opinion
Sep 22, 2008
European search report
Jun 12, 2008
Confirmation of receipt of (electronically) transmitted priority document
Jun 3, 2008
Letter concerning the priority
Jun 3, 2008
Priority document
May 23, 2008
Abstract
May 23, 2008
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
May 23, 2008
Claims
May 23, 2008
Description
May 23, 2008
Designation of inventor
May 23, 2008
Designation of inventor
May 23, 2008
Designation of inventor
May 23, 2008
Designation of inventor
May 23, 2008
Drawings
May 23, 2008
Request for grant of a European patent

EP1995465

GENERAL ELECTRIC

Application Number: EP08156777A
Filing Date: May 23, 2008
Status: Revoked; Nov 6, 2023
Publication Date: Aug 2, 2017
External Links: Slate, Register , Google Patents

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Barrier Sealing System For Centrifugal Compressors

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Dossier Documents

EP1995465