Power Converter

Patent No. EP2887524 (titled "Power Converter") was filed by Tokyo Institute OF Technology on Aug 20, 2012. The application was issued on Aug 11, 2021.

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
HITACHI ENERGY	May 11, 2022	VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE 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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May 2, 2025
Decision of the Board of Appeal
May 2, 2025
F3032 Notification(s) of the decision
May 2, 2025
F3032 Notification(s) of the decision
Apr 15, 2025
F3013 Oral Proceedings: Forwarding minutes
Apr 15, 2025
F3013 Oral Proceedings: Forwarding minutes
Apr 15, 2025
F3316 Oral Proceedings: Minutes (Appellant: Opponent)
Apr 3, 2025
F3345 Forwarding of submissions to parties
Apr 1, 2025
(Electronic) Receipt
Apr 1, 2025
Letter accompanying subsequently filed items
Apr 1, 2025
Letter dealing with oral proceedings during the appeal procedure
Mar 20, 2025
Oral proceedings: change of venue
Mar 20, 2025
Oral proceedings: change of venue
Mar 10, 2025
F3345 Forwarding of submissions to parties
Mar 7, 2025
(Electronic) Receipt
Mar 7, 2025
Letter accompanying subsequently filed items
Mar 7, 2025
Letter dealing with oral proceedings during the appeal procedure
Mar 4, 2025
F3345 Forwarding of submissions to parties
Feb 28, 2025
(Electronic) Receipt
Feb 28, 2025
(Electronic) Receipt
Feb 28, 2025
Letter accompanying subsequently filed items
Feb 28, 2025
Letter accompanying subsequently filed items
Feb 28, 2025
Letter dealing with oral proceedings during the appeal procedure
Feb 28, 2025
Request for interpreters during oral proceedings
Dec 20, 2024
F3011.1 Oral Proceedings: summons
Dec 20, 2024
F3011.1 Oral Proceedings: summons
Dec 20, 2024
F3350 Communication regarding oral proceedings (art. 15 Rules of Procedure of the Boards of Appeal)
Dec 17, 2024
F3010 Oral proceedings: order for summons
Sep 27, 2024
Composition of the board (T)
Aug 20, 2024
F3345 Forwarding of submissions to parties
Aug 14, 2024
(Electronic) Receipt
Aug 14, 2024
Letter accompanying subsequently filed items
Aug 14, 2024
Reply to appeal
Apr 18, 2024
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Apr 15, 2024
(Electronic) Receipt
Apr 15, 2024
Letter accompanying subsequently filed items
Apr 15, 2024
Statement of grounds of appeal
Feb 19, 2024
F3204 Communication of the file number to the parties
Feb 19, 2024
F3204 Communication of the file number to the parties
Jan 26, 2024
(Electronic) Receipt
Jan 26, 2024
Letter accompanying subsequently filed items
Jan 26, 2024
Notice of appeal
Dec 15, 2023
Advice of delivery
Dec 15, 2023
Advice of delivery
Dec 14, 2023
Annex to the communication - opposition
Dec 14, 2023
Decision of the Opposition Division and instruction
Dec 14, 2023
Decision rejecting the opposition
Dec 14, 2023
Decision rejecting the opposition
Dec 14, 2023
Grounds for the decision (Annex) - opposition
Dec 14, 2023
Means of redress
Dec 14, 2023
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Dec 14, 2023
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Dec 14, 2023
Provision of a copy of the minutes - opposition procedure
Dec 14, 2023
Provision of a copy of the minutes - opposition procedure
Dec 14, 2023
Scanned annex to a communication - opposition procedure
Dec 14, 2023
Transmittal of decision / summons - opposition
Dec 14, 2023
Transmittal of decision / summons - opposition
Nov 28, 2023
Brief communication - Opposition proceedings
Nov 28, 2023
Communication of amended entries
Nov 23, 2023
Information about the result of oral proceedings
Nov 21, 2023
(Electronic) Receipt
Nov 21, 2023
(Electronic) Receipt
Nov 21, 2023
Annexes in respect of a client data request
Nov 21, 2023
Letter accompanying subsequently filed items
Nov 21, 2023
Letter accompanying subsequently filed items
Nov 21, 2023
Request for transfer of rights - opponent
Nov 21, 2023
Written submission in preparation to/during oral proceedings
Nov 17, 2023
Brief communication - Opposition proceedings
Nov 16, 2023
(Electronic) Receipt
Nov 16, 2023
Letter accompanying subsequently filed items
Nov 16, 2023
Written submission in preparation to/during oral proceedings
Oct 5, 2023
Notification concerning the date of oral proceedings
Sep 28, 2023
Brief communication - Opposition proceedings
Sep 27, 2023
Brief communication - Opposition proceedings
Sep 27, 2023
Brief communication - Opposition proceedings
Sep 22, 2023
(Electronic) Receipt
Sep 22, 2023
Letter accompanying subsequently filed items
Sep 22, 2023
Written submission in preparation to/during oral proceedings
Sep 20, 2023
(Electronic) Receipt
Sep 20, 2023
Letter accompanying subsequently filed items
Sep 20, 2023
Request for interpreters during oral proceedings
Sep 20, 2023
Request for interpreters during oral proceedings
Jun 5, 2023
Brief communication - Opposition proceedings
Jun 5, 2023
Communication concerning the filing of a power of attorney
Jun 5, 2023
Communication of amended entries concerning the representative
May 25, 2023
Authorisation
May 25, 2023
Submission concerning change of proprietor's representative
Apr 26, 2023
Invitation to file an authorisation
Apr 24, 2023
Brief communication - Opposition proceedings
Apr 18, 2023
(Electronic) Receipt
Apr 18, 2023
Letter accompanying subsequently filed items
Apr 18, 2023
Submission concerning change of proprietor's representative
Apr 14, 2023
Advice of delivery
Apr 12, 2023
Advice of delivery
Apr 12, 2023
Annex to the communication - opposition
Apr 12, 2023
Information concerning oral proceedings
Apr 12, 2023
Scanned annex to a communication - opposition procedure
Apr 12, 2023
Summons to attend oral proceedings
Apr 12, 2023
Summons to attend oral proceedings
Apr 12, 2023
Transmittal of decision / summons - opposition
Apr 12, 2023
Transmittal of decision / summons - opposition
Dec 12, 2022
Brief communication - Opposition proceedings
Dec 7, 2022
(Electronic) Receipt
Dec 7, 2022
Auxiliary request during Opposition procedure
Dec 7, 2022
Auxiliary request during Opposition procedure
Dec 7, 2022
Auxiliary request during Opposition procedure
Dec 7, 2022
Auxiliary request during Opposition procedure
Dec 7, 2022
Auxiliary request during Opposition procedure
Dec 7, 2022
Auxiliary request during Opposition procedure
Dec 7, 2022
Auxiliary request during Opposition procedure
Dec 7, 2022
Auxiliary request during Opposition procedure
Dec 7, 2022
Auxiliary request during Opposition procedure
Dec 7, 2022
Auxiliary request during Opposition procedure - 01
Dec 7, 2022
Auxiliary request during Opposition procedure - 02
Dec 7, 2022
Auxiliary request during Opposition procedure - 03
Dec 7, 2022
Auxiliary request during Opposition procedure - 04
Dec 7, 2022
Auxiliary request during Opposition procedure - 05
Dec 7, 2022
Auxiliary request during Opposition procedure - 06
Dec 7, 2022
Auxiliary request during Opposition procedure - 07
Dec 7, 2022
Auxiliary request during Opposition procedure - 08
Dec 7, 2022
Auxiliary request during Opposition procedure - 09
Dec 7, 2022
Letter accompanying subsequently filed items
Dec 7, 2022
Reply of the patent proprietor to the notice(s) of opposition
Aug 17, 2022
Communication of a notice of opposition and request to file observations
Aug 17, 2022
Notice of further oppositions to opponent(s)
Aug 4, 2022
(Electronic) Receipt
Aug 4, 2022
Citation in opposition procedure - 002
Aug 4, 2022
Citation in opposition procedure - 004
Aug 4, 2022
Citation in opposition procedure - 005
Aug 4, 2022
Citation in opposition procedure - 012
Aug 4, 2022
Citation in opposition procedure - 013
Aug 4, 2022
Citation in opposition procedure - 023
Aug 4, 2022
Citation in opposition procedure - 024
Aug 4, 2022
Citation in opposition procedure - 026
Aug 4, 2022
Citation in opposition procedure - 027
Aug 4, 2022
Consolidated list of cited opposition documents
Aug 4, 2022
Letter accompanying subsequently filed items
Aug 4, 2022
Letter regarding the opposition procedure (no time limit)
May 25, 2022
Brief communication - Opposition proceedings
May 25, 2022
Request for documents
May 23, 2022
Communication of a notice of opposition - first information to patent proprietor
May 11, 2022
(Electronic) Receipt
May 11, 2022
Any annexes (other than citation) to an opposition letter
May 11, 2022
Citation in opposition procedure
May 11, 2022
Citation in opposition procedure
May 11, 2022
Citation in opposition procedure - 001
May 11, 2022
Citation in opposition procedure - 002
May 11, 2022
Citation in opposition procedure - 003
May 11, 2022
Citation in opposition procedure - 004
May 11, 2022
Citation in opposition procedure - 005
May 11, 2022
Citation in opposition procedure - 006
May 11, 2022
Citation in opposition procedure - 007
May 11, 2022
Citation in opposition procedure - 008
May 11, 2022
Citation in opposition procedure - 009
May 11, 2022
Citation in opposition procedure - 010
May 11, 2022
Citation in opposition procedure - 011
May 11, 2022
Citation in opposition procedure - 012
May 11, 2022
Citation in opposition procedure - 013
May 11, 2022
Citation in opposition procedure - 014
May 11, 2022
Citation in opposition procedure - 015
May 11, 2022
Citation in opposition procedure - 016
May 11, 2022
Citation in opposition procedure - 017
May 11, 2022
Citation in opposition procedure - 018
May 11, 2022
Citation in opposition procedure - 019
May 11, 2022
Citation in opposition procedure - 020
May 11, 2022
Citation in opposition procedure - 021
May 11, 2022
Citation in opposition procedure - 022
May 11, 2022
Citation in opposition procedure - 023
May 11, 2022
Citation in opposition procedure - 024
May 11, 2022
Citation in opposition procedure - 025
May 11, 2022
Citation in opposition procedure - 026
May 11, 2022
Citation in opposition procedure - 027
May 11, 2022
Citation in opposition procedure - 028
May 11, 2022
Citation in opposition procedure - 029
May 11, 2022
Notice of opposition
May 11, 2022
Notice of opposition
Aug 24, 2021
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jul 15, 2021
Decision to grant a European patent
Jul 15, 2021
Payment submission rejected
Jul 5, 2021
(Electronic) Receipt
Jul 5, 2021
Filing of the translations of the claims
Jul 5, 2021
French translation of claims
Jul 5, 2021
German translation of the claims
Mar 15, 2021
Bibliographic data of the European patent application
Mar 15, 2021
Communication about intention to grant a European patent
Mar 15, 2021
Text intended for grant (clean copy)
Mar 15, 2021
Text intended for grant (version for approval)
Mar 12, 2021
Intention to grant (signatures)
Mar 27, 2020
(Electronic) Receipt
Mar 27, 2020
Amended claims with annotations
Mar 27, 2020
Claims
Mar 27, 2020
Letter accompanying subsequently filed items
Mar 27, 2020
Reply to communication from the Examining Division
Nov 28, 2019
Annex to the communication
Nov 28, 2019
Communication from the Examining Division
May 17, 2018
(Electronic) Receipt
May 17, 2018
Amended claims with annotations
May 17, 2018
Claims
May 17, 2018
Letter accompanying subsequently filed items
May 17, 2018
Non-patent literature cited during the examination procedure
May 17, 2018
Reply to communication from the Examining Division
May 17, 2018
Submission concerning representation
Jan 19, 2018
Annex to the communication
Jan 19, 2018
Communication from the Examining Division
Jan 8, 2018
Examination started
Dec 27, 2016
(Electronic) Receipt
Dec 27, 2016
Amended claims filed after receipt of (European) search report
Dec 27, 2016
Amended claims with annotations
Dec 27, 2016
Amended description filed after receipt of (European) search report
Dec 27, 2016
Amendments received before examination
Dec 27, 2016
Letter accompanying subsequently filed items
Jun 28, 2016
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Jun 10, 2016
Communication regarding the transmission of the European search report
Jun 10, 2016
European search opinion
Jun 10, 2016
Information on Search Strategy
Jun 10, 2016
Supplementary European search report
May 24, 2016
Search started
Dec 4, 2015
Communication of amended entries concerning the representative
Nov 30, 2015
Submission concerning change of applicant's representative
May 28, 2015
Notification of forthcoming publication
Mar 27, 2015
Communication regarding possible amendment of the application/payment of claims fee
Mar 25, 2015
Communication to designated inventor
Mar 25, 2015
Communication to designated inventor
Mar 10, 2015
Copy of the international preliminary report on patentability
Mar 10, 2015
Translation of the international preliminary report on patentability
Feb 3, 2015
Communication of the registration of a transfer or change of name and/or address
Jan 26, 2015
(Electronic) Receipt
Jan 26, 2015
Letter accompanying subsequently filed items
Jan 26, 2015
Notification of the recording of a change
Jan 26, 2015
Submission concerning change of applicant's address
Jan 8, 2015
Notification of the recording of a change
Dec 5, 2014
Information regarding early processing
Nov 11, 2014
(Electronic) Receipt
Nov 11, 2014
Abstract
Nov 11, 2014
Claims
Nov 11, 2014
Description
Nov 11, 2014
Drawings
Nov 11, 2014
Request for entry into the European phase
Feb 27, 2014
Copy of the international search report
Feb 27, 2014
Copy of the translated international search report
Feb 27, 2014
International publication pamphlet

EP2887524

TOKYO INSTITUTE OF TECHNOLOGY

Application Number: EP12883406A
Filing Date: Aug 20, 2012
Status: Revoked; May 7, 2025
Publication Date: Aug 11, 2021
External Links: Slate, Register , Google Patents

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Power Converter

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Dossier Documents

EP2887524