Heat-Resistant Millable Silicone Rubber Composition

Patent No. EP3533838 (titled "Heat-Resistant Millable Silicone Rubber Composition") was filed by Shin Etsu Chemical on Oct 18, 2017. The application was issued on Feb 21, 2024.

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
ELKEM SILICONES FRANCE	Nov 21, 2024	LAVOIX

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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Feb 18, 2026
Annex to the communication - opposition
Feb 18, 2026
Brief communication - Opposition proceedings
Feb 18, 2026
Brief communication - Opposition proceedings
Feb 18, 2026
Decision of the Opposition Division and instruction
Feb 18, 2026
Decision revoking the European patent
Feb 18, 2026
Decision revoking the European patent
Feb 18, 2026
Grounds for the decision (Annex) - opposition
Feb 18, 2026
Means of redress
Feb 18, 2026
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Feb 18, 2026
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Feb 18, 2026
Provision of a copy of the minutes - opposition procedure
Feb 18, 2026
Provision of a copy of the minutes - opposition procedure
Feb 13, 2026
Scanned annex to a communication - opposition procedure
Jan 27, 2026
Information about the result of oral proceedings
Nov 28, 2025
Brief communication - Opposition proceedings
Nov 26, 2025
(Electronic) Receipt
Nov 26, 2025
Letter accompanying subsequently filed items
Nov 26, 2025
Written submission in preparation to/during oral proceedings
Nov 25, 2025
Brief communication - Opposition proceedings
Nov 21, 2025
Brief communication - Opposition proceedings
Nov 20, 2025
Brief communication - Opposition proceedings
Nov 19, 2025
(Electronic) Receipt
Nov 19, 2025
Letter accompanying subsequently filed items
Nov 19, 2025
Request for interpreters during oral proceedings
Nov 18, 2025
(Electronic) Receipt
Nov 18, 2025
Letter accompanying subsequently filed items
Nov 18, 2025
Written submission in preparation to/during oral proceedings
Nov 17, 2025
(Electronic) Receipt
Nov 17, 2025
Letter accompanying subsequently filed items
Nov 17, 2025
Request for interpreters during oral proceedings
Sep 5, 2025
Annex to the communication - opposition
Sep 5, 2025
Information concerning oral proceedings
Sep 5, 2025
Scanned annex to a communication - opposition procedure
Sep 5, 2025
Summons to attend oral proceedings
Sep 5, 2025
Summons to attend oral proceedings
May 8, 2025
Brief communication - Opposition proceedings
May 1, 2025
(Electronic) Receipt
May 1, 2025
Any annexes (other than citation) to an opposition letter
May 1, 2025
Letter accompanying subsequently filed items
May 1, 2025
Letter regarding the opposition procedure (no time limit)
Apr 9, 2025
Brief communication - Opposition proceedings
Apr 4, 2025
(Electronic) Receipt
Apr 4, 2025
Auxiliary request during Opposition procedure
Apr 4, 2025
Auxiliary request during Opposition procedure
Apr 4, 2025
Auxiliary request during Opposition procedure
Apr 4, 2025
Auxiliary request during Opposition procedure
Apr 4, 2025
Auxiliary request during Opposition procedure
Apr 4, 2025
Auxiliary request during Opposition procedure
Apr 4, 2025
Auxiliary request during Opposition procedure - 01
Apr 4, 2025
Auxiliary request during Opposition procedure - 02
Apr 4, 2025
Auxiliary request during Opposition procedure - 03
Apr 4, 2025
Auxiliary request during Opposition procedure - 04
Apr 4, 2025
Auxiliary request during Opposition procedure - 05
Apr 4, 2025
Auxiliary request during Opposition procedure - 06
Apr 4, 2025
Citation in opposition procedure - 011
Apr 4, 2025
Consolidated list of cited opposition documents
Apr 4, 2025
Letter accompanying subsequently filed items
Apr 4, 2025
Reply of the patent proprietor to the notice(s) of opposition
Dec 5, 2024
Communication of a notice of opposition and request to file observations
Dec 5, 2024
Notice of further oppositions to opponent(s)
Nov 26, 2024
Communication of a notice of opposition - first information to patent proprietor
Nov 21, 2024
(Electronic) Receipt
Nov 21, 2024
Citation in opposition procedure - 001
Nov 21, 2024
Citation in opposition procedure - 001
Nov 21, 2024
Citation in opposition procedure - 002
Nov 21, 2024
Citation in opposition procedure - 003
Nov 21, 2024
Citation in opposition procedure - 003
Nov 21, 2024
Citation in opposition procedure - 004
Nov 21, 2024
Citation in opposition procedure - 005
Nov 21, 2024
Citation in opposition procedure - 006
Nov 21, 2024
Citation in opposition procedure - 007
Nov 21, 2024
Citation in opposition procedure - 008
Nov 21, 2024
Citation in opposition procedure - 009
Nov 21, 2024
Citation in opposition procedure - 010
Nov 21, 2024
Notice of opposition
Nov 21, 2024
Notice of opposition
Mar 5, 2024
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jan 25, 2024
Decision to grant a European patent
Jan 15, 2024
(Electronic) Receipt
Jan 15, 2024
Filing of the translations of the claims
Jan 15, 2024
French translation of claims
Jan 15, 2024
German translation of the claims
Jan 15, 2024
Letter accompanying subsequently filed items
Nov 10, 2023
Annex to the communication about intention to grant a European patent
Nov 10, 2023
Bibliographic data of the European patent application
Nov 10, 2023
Communication about intention to grant a European patent
Nov 10, 2023
Intention to grant (signatures)
Nov 10, 2023
Text intended for grant (clean copy)
Nov 10, 2023
Text intended for grant (version for approval)
Sep 25, 2023
Examination started
Jun 7, 2021
Annexes in respect of a client data request
Jun 7, 2021
Annexes in respect of a client data request
May 11, 2021
Transmittal of third party observations to applicant
May 3, 2021
Observations by third parties
Dec 4, 2020
(Electronic) Receipt
Dec 4, 2020
Letter accompanying subsequently filed items
Dec 4, 2020
Reply to Written Opinion prepared by the EPO
Jun 15, 2020
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
May 26, 2020
Communication regarding the transmission of the European search report
May 26, 2020
European search opinion
May 26, 2020
Information on Search Strategy
May 26, 2020
Supplementary European search report
May 4, 2020
Search started
Aug 7, 2019
Notification of forthcoming publication
Jun 5, 2019
Communication regarding possible amendment of the application/payment of claims fee
Jun 3, 2019
Communication to designated inventor
Jun 3, 2019
Communication to designated inventor
May 20, 2019
Copy of the international preliminary report on patentability
May 20, 2019
Translation of the international preliminary report on patentability
May 16, 2019
(Electronic) Receipt
May 16, 2019
Abstract
May 16, 2019
Claims
May 16, 2019
Copy of the international preliminary report on patentability
May 16, 2019
Description
May 16, 2019
Request for entry into the European phase
May 16, 2019
Translation of the international preliminary report on patentability
Mar 8, 2019
Information on entry into European phase
May 22, 2018
Priority document (electronically transmitted)
May 22, 2018
Priority document (electronically transmitted)
May 3, 2018
Copy of the international search report
May 3, 2018
Copy of the translated international search report
May 3, 2018
International publication pamphlet

EP3533838

SHIN ETSU CHEMICAL

Application Number: EP17864518A
Filing Date: Oct 18, 2017
Status: Granted And Under Opposition; Jan 19, 2024
Publication Date: Feb 21, 2024
External Links: Slate, Register , Google Patents

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Heat-Resistant Millable Silicone Rubber Composition

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Dossier Documents

EP3533838