IP Verse

Use Of A Silicone Rubber Composition For The Manufacture Of An Insulator For High Voltage Direct Current Applications

Patent No. EP3243205 (titled "Use Of A Silicone Rubber Composition For The Manufacture Of An Insulator For High Voltage Direct Current Applications") was filed by Momentive Performance Materials GmbH on Jan 8, 2016. The application was issued on May 14, 2025.

Patent Summary

Patent Family

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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
WACKER CHEMIE	Dec 13, 2019	MIESKES

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

Apr 17, 2025
Decision to maintain the European patent in amended form
Apr 17, 2025
Decision to maintain the European patent in amended form
Apr 8, 2025
(Electronic) Receipt
Apr 8, 2025
Filing of the translation of the amended claims
Apr 8, 2025
French translation of claims
Apr 8, 2025
German translation of the claims
Apr 8, 2025
Letter accompanying subsequently filed items
Jan 20, 2025
Communication of bibliographic data
Jan 20, 2025
Communication to opponent concerning maintenance
Jan 20, 2025
Communication with request to file translations
Jan 10, 2025
Maintenance of the patent with the documents specified in the final decision
Oct 23, 2024
Brief communication - Opposition proceedings
Oct 23, 2024
Brief communication - Opposition proceedings
Oct 11, 2024
Brief communication - Opposition proceedings
Oct 11, 2024
Brief communication - Opposition proceedings
Oct 11, 2024
Druckexemplar in opposition procedure
Oct 11, 2024
Grounds for the decision (Annex) - opposition
Oct 11, 2024
Interlocutory decision in opposition proceedings
Oct 11, 2024
Interlocutory decision in opposition proceedings
Oct 11, 2024
Means of redress
Oct 9, 2024
Decision of the Opposition Division and instruction
Sep 13, 2024
Annex to the communication - opposition
Sep 13, 2024
Brief communication - Opposition proceedings
Sep 13, 2024
Brief communication - Opposition proceedings
Sep 11, 2024
Brief communication - Opposition proceedings
Sep 4, 2024
(Electronic) Receipt
Sep 4, 2024
General enquiry
Sep 4, 2024
Letter accompanying subsequently filed items
Sep 16, 2022
Annex to the communication - opposition
Sep 16, 2022
Brief communication - Opposition proceedings
Sep 16, 2022
Brief communication - Opposition proceedings
Sep 16, 2022
Communication inviting the parties to file observations
Sep 16, 2022
Communication inviting the parties to file observations
Oct 15, 2021
Brief communication - Opposition proceedings
Oct 12, 2021
(Electronic) Receipt
Oct 12, 2021
Description
Oct 12, 2021
Letter accompanying subsequently filed items
Oct 12, 2021
Reply to an examination report in opposition proceedings
Jun 14, 2021
Annex to the communication - opposition
Jun 14, 2021
Brief communication - Opposition proceedings
Jun 14, 2021
Brief communication - Opposition proceedings
Jun 14, 2021
Communication inviting the parties to file observations
Jun 14, 2021
Internal form - Opposition/addressees
Jun 8, 2021
Notification concerning the date of oral proceedings
Jun 8, 2021
Notification concerning the date of oral proceedings
May 11, 2021
Brief communication - Opposition proceedings
May 5, 2021
(Electronic) Receipt
May 5, 2021
Letter accompanying subsequently filed items
May 5, 2021
Written submission in preparation to/during oral proceedings
May 4, 2021
Brief communication - Opposition proceedings
Apr 28, 2021
(Electronic) Receipt
Apr 28, 2021
Letter accompanying subsequently filed items
Apr 28, 2021
Written submission in preparation to/during oral proceedings
Apr 13, 2021
Notification concerning the date of oral proceedings
Apr 13, 2021
Notification concerning the date of oral proceedings
Feb 10, 2021
Advice of delivery
Feb 9, 2021
Advice of delivery
Feb 5, 2021
Document concerning representation
Feb 4, 2021
Annex to the communication - opposition
Feb 4, 2021
Scanned annex to a communication - opposition procedure
Feb 4, 2021
Summons to attend oral proceedings
Feb 4, 2021
Summons to attend oral proceedings
Feb 4, 2021
Transmittal of decision / summons - opposition
Feb 4, 2021
Transmittal of decision / summons - opposition
Oct 7, 2020
Brief communication - Opposition proceedings
Oct 2, 2020
(Electronic) Receipt
Oct 2, 2020
Auxiliary request during Opposition procedure
Oct 2, 2020
Auxiliary request during Opposition procedure
Oct 2, 2020
Auxiliary request during Opposition procedure
Oct 2, 2020
Auxiliary request during Opposition procedure - 01
Oct 2, 2020
Auxiliary request during Opposition procedure - 02
Oct 2, 2020
Auxiliary request during Opposition procedure - 03
Oct 2, 2020
Citation in opposition procedure - 006
Oct 2, 2020
Citation in opposition procedure - 007
Oct 2, 2020
Consolidated list of cited opposition documents
Oct 2, 2020
Letter accompanying subsequently filed items
Oct 2, 2020
Main request during Opposition procedure
Oct 2, 2020
Main request during Opposition procedure
Oct 2, 2020
Reply of the patent proprietor to the notice(s) of opposition
Jul 21, 2020
Brief communication - Opposition proceedings
Jul 21, 2020
Grant of extension of time limit (opposition procedure)
Jul 15, 2020
(Electronic) Receipt
Jul 15, 2020
Letter accompanying subsequently filed items
Jul 15, 2020
Request for extension of time limit
Jun 4, 2020
Brief communication - Opposition proceedings
Jun 4, 2020
Grant of extension of time limit (opposition procedure)
May 26, 2020
(Electronic) Receipt
May 26, 2020
Letter accompanying subsequently filed items
May 26, 2020
Request for extension of time limit
Jan 24, 2020
Communication of a notice of opposition and request to file observations
Jan 24, 2020
Notice of further oppositions to opponent(s)
Dec 19, 2019
Communication of a notice of opposition - first information to patent proprietor
Dec 13, 2019
(Electronic) Receipt
Dec 13, 2019
Citation in opposition procedure - 001
Dec 13, 2019
Citation in opposition procedure - 002
Dec 13, 2019
Citation in opposition procedure - 003
Dec 13, 2019
Citation in opposition procedure - 004
Dec 13, 2019
Citation in opposition procedure - 005
Dec 13, 2019
General authorisation
Dec 13, 2019
Notice of opposition
Dec 13, 2019
Notice of opposition
Apr 15, 2019
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Mar 7, 2019
Decision to grant a European patent
Feb 15, 2019
(Electronic) Receipt
Feb 15, 2019
Filing of the translations of the claims
Feb 15, 2019
French translation of claims
Feb 15, 2019
German translation of the claims
Feb 15, 2019
Letter accompanying subsequently filed items
Oct 17, 2018
Bibliographic data of the European patent application
Oct 17, 2018
Communication about intention to grant a European patent
Oct 17, 2018
Intention to grant (signatures)
Oct 17, 2018
Text intended for grant (clean copy)
Oct 17, 2018
Text intended for grant (version for approval)
Aug 27, 2018
(Electronic) Receipt
Aug 27, 2018
Amended description with annotations
Aug 27, 2018
Description
Aug 27, 2018
Letter accompanying subsequently filed items
Aug 27, 2018
Reply to communication from the Examining Division
Jul 5, 2018
Annex to the communication
Jul 5, 2018
Communication from the Examining Division
Jun 25, 2018
Examination started
Feb 26, 2018
(Electronic) Receipt
Feb 26, 2018
Amended claims filed after receipt of (European) search report
Feb 26, 2018
Amended claims with annotations
Feb 26, 2018
Amendments received before examination
Feb 26, 2018
Letter accompanying subsequently filed items
Oct 20, 2017
Communication to designated inventor
Oct 18, 2017
Notification on forthcoming publication of bibliographic data
Oct 5, 2017
Letter concerning the inventor
Sep 28, 2017
Invitation to indicate correct address of inventor
Sep 12, 2017
Letter which had not been notified
Aug 17, 2017
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Aug 14, 2017
Communication to designated inventor
Aug 14, 2017
Communication to designated inventor
Aug 14, 2017
Communication to designated inventor
Aug 14, 2017
Communication to designated inventor
Jul 24, 2017
Copy of the international preliminary report on patentability
May 23, 2017
(Electronic) Receipt
May 23, 2017
Request for entry into the European phase
May 19, 2017
Information on entry into European phase
Aug 1, 2016
Priority document (electronically transmitted)
Jul 14, 2016
Copy of the international search report
Jul 14, 2016
Published international application - A1
Jun 8, 2016
Written opinion of the ISA, boxes No. I to VIII
Jun 8, 2016
Written opinion of the ISA, cover sheet
Jun 8, 2016
Written opinion of the ISA, supplemental box
Feb 10, 2016
Incoming fax related to PCT RO
Feb 2, 2016
Notification of receipt of Search copy
Feb 1, 2016
Invitation to correct defects in the international application
Feb 1, 2016
Notification of the international application number and of the international filing date
Jan 27, 2016
Request form for international application (copy for ISA/EP)
Jan 9, 2016
Incoming letter related to PCT RO
Jan 8, 2016
(Electronic) Receipt
Jan 8, 2016
Abstract
Jan 8, 2016
Claims
Jan 8, 2016
Description
Jan 8, 2016
Document concerning fees and payments
Jan 8, 2016
Electronic request for grant of an International application
Jan 8, 2016
Substitute sheet (R26) Request

EP3243205

MOMENTIVE PERFORMANCE MATERIALS GMBH

Application Number: EP16700691A
Filing Date: Jan 8, 2016
Status: Patent Maintained As Amended; Apr 11, 2025
Publication Date: May 14, 2025
External Links: Slate, Register , Google Patents