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Dual Pump Fuel Flow System For A Gas Turbine Engine And Method Of Controlling - EP2500552

The patent EP2500552 was granted to Hamilton Sundstrand on Jun 21, 2023. The application was filed on Mar 19, 2012 under application number EP12160237A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

EP2500552

HAMILTON SUNDSTRAND

Application Number: EP12160237A
Filing Date: Mar 19, 2012
Status: Patent Maintained As Amended; May 19, 2023
Publication Date: Jun 21, 2023
External Links: Slate, Register, Google Patents

Patent Summary

Patent Family

Patent Oppositions

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
SAFRAN AIRCRAFT ENGINES	Mar 28, 2018	CABINET BEAU DE LOMENIE	-

Patent Citations (18) New

Patent citations refer to prior patents cited during different phases such as opposition or international search.

Citation Phase	Publication Number
OPPOSITION	EP0391610
OPPOSITION	EP1329617
OPPOSITION	EP1416136
OPPOSITION	EP1557546
OPPOSITION	EP1715161
OPPOSITION	US2009031821
OPPOSITION	US2010089025
OPPOSITION	US2506611
OPPOSITION	US2761387
OPPOSITION	US2812715
OPPOSITION	US2835323
OPPOSITION	US3332234
OPPOSITION	US4245964
SEARCH	EP1329617
SEARCH	EP1557546
SEARCH	WO03023208
SEARCH	WO2007044020
SEARCH	WO2011042641

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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May 25, 2023
Decision to maintain the European patent in amended form
OPPO
May 25, 2023
Decision to maintain the European patent in amended form
OPPO
May 19, 2023
Termination of the opposition proceedings with maintenance of patent
OPPO
May 16, 2023
(Electronic) Receipt
OPPO
May 16, 2023
Description
OPPO
May 16, 2023
Filing of the translation of the amended claims
OPPO
May 16, 2023
French translation of claims
OPPO
May 16, 2023
German translation of the claims
OPPO
May 16, 2023
Letter accompanying subsequently filed items
OPPO
Feb 6, 2023
Communication of bibliographic data
OPPO
Feb 6, 2023
Communication to opponent concerning maintenance
OPPO
Feb 6, 2023
Communication with request to file translations
OPPO
Jan 30, 2023
Maintenance of the patent with the documents specified in the final decision
OPPO
Jan 30, 2023
OPPODREX with handwritten amendments
OPPO
Jan 26, 2023
Decision of the Board of Appeal
Appeal
Jan 26, 2023
F3032 Notification(s) of the decision
Appeal
Jan 26, 2023
F3032 Notification(s) of the decision
Appeal
Dec 23, 2022
Description submitted during oral proceedings
Appeal
Dec 23, 2022
F3013 Oral Proceedings: Forwarding minutes
Appeal
Dec 23, 2022
F3013 Oral Proceedings: Forwarding minutes
Appeal
Dec 23, 2022
F3316 Oral Proceedings: Minutes (Appellant: Opponent)
Appeal
Dec 6, 2022
F3345 Forwarding of submissions to parties
Appeal
Dec 2, 2022
(Electronic) Receipt
Appeal
Dec 2, 2022
Letter accompanying subsequently filed items
Appeal
Nov 18, 2022
Advice of delivery
Appeal
Nov 18, 2022
F3345 Forwarding of submissions to parties
Appeal
Nov 15, 2022
(Electronic) Receipt
Appeal
Nov 15, 2022
Letter accompanying subsequently filed items
Appeal
Nov 10, 2022
F3345 Forwarding of submissions to parties
Appeal
Nov 4, 2022
(Electronic) Receipt
Appeal
Nov 4, 2022
Letter accompanying subsequently filed items
Appeal
Nov 3, 2022
F3018 Oral proceedings: Confirmation interpreters
Appeal
Nov 3, 2022
F3018 Oral proceedings: Confirmation interpreters
Appeal
Nov 3, 2022
F3345 Forwarding of submissions to parties
Appeal
Nov 3, 2022
Oral proceedings: change of venue
Appeal
Nov 3, 2022
Oral proceedings: change of venue
Appeal
Oct 28, 2022
(Electronic) Receipt
Appeal
Oct 28, 2022
Letter accompanying subsequently filed items
Appeal
Oct 28, 2022
Letter dealing with oral proceedings during the appeal procedure
Appeal
Oct 4, 2022
F3345 Forwarding of submissions to parties
Appeal
Sep 26, 2022
(Electronic) Receipt
Appeal
Sep 26, 2022
Letter dealing with oral proceedings during the appeal procedure
Appeal
Sep 26, 2022
Written submission in preparation to/during oral proceedings
Appeal
Sep 22, 2022
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Appeal
Sep 22, 2022
F3305 Communication of the Board of Appeal (ex parte/ inter partes)
Appeal
Mar 21, 2022
Advice of delivery
Appeal
Mar 14, 2022
F3011.1 Oral Proceedings: summons
Appeal
Mar 14, 2022
F3011.1 Oral Proceedings: summons
Appeal
Mar 9, 2022
F3010 Oral proceedings: order for summons
Appeal
May 3, 2021
F3345 Forwarding of submissions to parties
Appeal
Apr 28, 2021
(Electronic) Receipt
Appeal
Apr 28, 2021
Letter accompanying subsequently filed items
Appeal
Apr 28, 2021
Letter relating to Appeal Procedure
Appeal
Mar 24, 2021
F3345 Forwarding of submissions to parties
Appeal
Mar 19, 2021
(Electronic) Receipt
Appeal
Mar 19, 2021
Letter accompanying subsequently filed items
Appeal
Mar 19, 2021
Letter relating to Appeal Procedure
Appeal
Nov 27, 2020
Composition of the board (T)
Appeal
Oct 7, 2020
F3345 Forwarding of submissions to parties
Appeal
Oct 2, 2020
(Electronic) Receipt
Appeal
Oct 2, 2020
Letter accompanying subsequently filed items
Appeal
Oct 2, 2020
Letter relating to Appeal Procedure
Appeal
Aug 27, 2020
F3345 Forwarding of submissions to parties
Appeal
Aug 5, 2020
(Electronic) Receipt
Appeal
Aug 5, 2020
Amended claims with annotations
Appeal
Aug 5, 2020
Amended claims with annotations
Appeal
Aug 5, 2020
Amended claims with annotations
Appeal
Aug 5, 2020
Amended claims with annotations
Appeal
Aug 5, 2020
Amended claims with annotations
Appeal
Aug 5, 2020
Claims
Appeal
Aug 5, 2020
Claims
Appeal
Aug 5, 2020
Claims
Appeal
Aug 5, 2020
Claims
Appeal
Aug 5, 2020
Claims
Appeal
Aug 5, 2020
Letter accompanying subsequently filed items
Appeal
Aug 5, 2020
Reply to appeal
Appeal
Mar 26, 2020
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Appeal
Mar 20, 2020
(Electronic) Receipt
Appeal
Mar 20, 2020
Letter accompanying subsequently filed items
Appeal
Mar 20, 2020
Statement of grounds of appeal
Appeal
Feb 5, 2020
F3204 Communication of the file number to the parties
Appeal
Feb 5, 2020
F3204 Communication of the file number to the parties
Appeal
Jan 27, 2020
(Electronic) Receipt
Appeal
Jan 27, 2020
Letter accompanying subsequently filed items
Appeal
Jan 27, 2020
Notice of appeal
Appeal
Jan 6, 2020
Advice of delivery
OPPO
Jan 3, 2020
Communication about missing advice of delivery
OPPO
Dec 2, 2019
Advice of delivery
OPPO
Nov 27, 2019
Acknowledgement of a document
OPPO
Nov 27, 2019
Acknowledgement of a document
OPPO
Nov 27, 2019
Annex to the communication - opposition
OPPO
Nov 27, 2019
Decision of the Opposition Division and instruction
OPPO
Nov 27, 2019
Druckexemplar in opposition procedure
OPPO
Nov 27, 2019
Grounds for the decision (Annex) - opposition
OPPO
Nov 27, 2019
Interlocutory decision in opposition proceedings
OPPO
Nov 27, 2019
Internal form - Opposition/addressees
OPPO
Nov 27, 2019
Internal form - Opposition/addressees
OPPO
Nov 27, 2019
Means of redress
OPPO
Nov 27, 2019
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
OPPO
Nov 27, 2019
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
OPPO
Nov 27, 2019
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
OPPO
Nov 27, 2019
Provision of a copy of the minutes - opposition procedure
OPPO
Nov 27, 2019
Scanned annex to a communication - opposition procedure
OPPO
Sep 25, 2019
Information about the result of oral proceedings
OPPO
Jul 30, 2019
Brief communication - Opposition proceedings
OPPO
Jul 26, 2019
Brief communication - Opposition proceedings
OPPO
Jul 23, 2019
(Electronic) Receipt
OPPO
Jul 23, 2019
Request for interpreters during oral proceedings
OPPO
Jul 23, 2019
Written submission in preparation to/during oral proceedings
OPPO
Jul 22, 2019
Brief communication - Opposition proceedings
OPPO
Jul 18, 2019
(Electronic) Receipt
OPPO
Jul 18, 2019
Letter accompanying subsequently filed items
OPPO
Jul 18, 2019
Written submission in preparation to/during oral proceedings
OPPO
Jul 16, 2019
Brief communication - Opposition proceedings
OPPO
Jul 12, 2019
(Electronic) Receipt
OPPO
Jul 12, 2019
Request for interpreters during oral proceedings
OPPO
Jul 10, 2019
Brief communication - Opposition proceedings
OPPO
Jul 8, 2019
(Electronic) Receipt
OPPO
Jul 8, 2019
Request for interpreters during oral proceedings
OPPO
Jun 11, 2019
Brief communication - Opposition proceedings
OPPO
Jun 11, 2019
Brief communication - Opposition proceedings
OPPO
Mar 28, 2019
Advice of delivery
OPPO
Mar 11, 2019
Communication about missing advice of delivery
OPPO
Feb 11, 2019
Advice of delivery
OPPO
Feb 4, 2019
Advice of delivery
OPPO
Jan 28, 2019
Acknowledgement of a document
OPPO
Jan 28, 2019
Acknowledgement of a document
OPPO
Jan 28, 2019
Annex to the communication - opposition
OPPO
Jan 28, 2019
Information concerning oral proceedings
OPPO
Jan 28, 2019
Summons to attend oral proceedings
OPPO
Jan 28, 2019
Summons to attend oral proceedings
OPPO
Jan 21, 2019
Information about the result of oral proceedings
OPPO
Aug 31, 2018
Brief communication - Opposition proceedings
OPPO
Aug 23, 2018
(Electronic) Receipt
OPPO
Aug 23, 2018
Amended claims with annotations
OPPO
Aug 23, 2018
Amended claims with annotations
OPPO
Aug 23, 2018
Claims
OPPO
Aug 23, 2018
Claims
OPPO
Aug 23, 2018
Letter accompanying subsequently filed items
OPPO
Aug 23, 2018
Reply of the patent proprietor to the notice(s) of opposition
OPPO
May 28, 2018
Communication of amended entries concerning the representative
OPPO
May 17, 2018
Submission concerning change of applicant's representative
OPPO
Apr 13, 2018
Communication of a notice of opposition and request to file observations
OPPO
Apr 13, 2018
Notice of further oppositions to opponent(s)
OPPO
Apr 9, 2018
Communication of a notice of opposition - first information to patent proprietor
OPPO
Mar 28, 2018
(Electronic) Receipt
OPPO
Mar 28, 2018
Notice of opposition
OPPO
Mar 28, 2018
Notice of opposition
OPPO
Mar 28, 2018
Patent document cited during the opposition procedure
OPPO
Mar 28, 2018
Patent document cited during the opposition procedure
OPPO
Mar 28, 2018
Patent document cited during the opposition procedure
OPPO
Mar 28, 2018
Patent document cited during the opposition procedure
OPPO
Mar 28, 2018
Patent document cited during the opposition procedure
OPPO
Mar 28, 2018
Patent document cited during the opposition procedure
OPPO
Mar 28, 2018
Patent document cited during the opposition procedure
OPPO
Mar 28, 2018
Patent document cited during the opposition procedure
OPPO
Mar 28, 2018
Patent document cited during the opposition procedure
OPPO
Mar 28, 2018
Patent document cited during the opposition procedure
OPPO
Mar 28, 2018
Patent document cited during the opposition procedure
OPPO
Mar 28, 2018
Patent document cited during the opposition procedure
OPPO
Mar 28, 2018
Patent document cited during the opposition procedure
OPPO
Jun 28, 2017
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Search/Exam
Jun 1, 2017
Decision to grant a European patent
Search/Exam
May 17, 2017
(Electronic) Receipt
Search/Exam
May 17, 2017
Filing of the translations of the claims
Search/Exam
May 17, 2017
French translation of claims
Search/Exam
May 17, 2017
German translation of the claims
Search/Exam
May 17, 2017
Letter accompanying subsequently filed items
Search/Exam
Mar 15, 2017
Bibliographic data of the European patent application
Search/Exam
Mar 15, 2017
Communication about intention to grant a European patent
Search/Exam
Mar 15, 2017
Intention to grant (signatures)
Search/Exam
Mar 15, 2017
Text intended for grant (clean copy)
Search/Exam
Mar 15, 2017
Text intended for grant (version for approval)
Search/Exam
Jan 23, 2017
Examination started
Search/Exam
Aug 9, 2016
Communication of amended entries concerning the representative
Search/Exam
Aug 1, 2016
Submission concerning change of applicant's representative
Search/Exam
Jul 26, 2016
Response to enquiry for communication from the Examining Division
Search/Exam
Jul 20, 2016
Enquiry as to when a communication from the Examining Division can be expected
Search/Exam
Aug 12, 2015
Communication of amended entries concerning the representative
Search/Exam
Jul 29, 2015
Annexes in respect of a client data request
Search/Exam
Jul 29, 2015
Submission concerning change of applicant's representative
Search/Exam
Feb 6, 2014
Decision to allow further processing
Search/Exam
Jan 22, 2014
(Electronic) Receipt
Search/Exam
Jan 22, 2014
Amended claims filed after receipt of (European) search report
Search/Exam
Jan 22, 2014
Amended claims with annotations
Search/Exam
Jan 22, 2014
Amended description filed after receipt of (European) search report
Search/Exam
Jan 22, 2014
Amended description with annotations
Search/Exam
Jan 22, 2014
Letter accompanying subsequently filed items
Search/Exam
Jan 22, 2014
Request for further processing
Search/Exam
Nov 27, 2013
Application deemed to be withdrawn (non-reply to Written Opinion)
Search/Exam
Oct 17, 2013
(Electronic) Receipt
Search/Exam
Oct 17, 2013
Letter concerning fees and payments
Search/Exam
Jul 11, 2013
CDS Clean up - amended data concerning the representative for the applicant
Search/Exam
Apr 22, 2013
Reminder period for payment of examination fee/designation fee and correction of deficiencies in Written Opinion/amendment
Search/Exam
Mar 20, 2013
Communication regarding the transmission of the European search report
Search/Exam
Mar 20, 2013
European search opinion
Search/Exam
Mar 20, 2013
European search report
Search/Exam
Aug 22, 2012
Notification of forthcoming publication
Search/Exam
May 25, 2012
Confirmation of receipt of (electronically) transmitted priority document
Search/Exam
May 21, 2012
Priority document (electronically transmitted)
Search/Exam
Mar 19, 2012
Abstract
Search/Exam
Mar 19, 2012
Acknowledgement of receipt of electronic submission of the request for grant of a European patent
Search/Exam
Mar 19, 2012
Claims
Search/Exam
Mar 19, 2012
Description
Search/Exam
Mar 19, 2012
Designation of inventor
Search/Exam
Mar 19, 2012
Drawings
Search/Exam
Mar 19, 2012
Request for grant of a European patent
Search/Exam