Nitrile Group Containing, Highly Saturated Copolymer Rubber

Patent No. EP3305817 (titled "Nitrile Group Containing, Highly Saturated Copolymer Rubber") was filed by Zeon on May 19, 2016. The application was issued on Dec 27, 2023.

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
ARLANXEO DEUTSCHLAND	Apr 8, 2020	AHMED

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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Nov 30, 2023
Decision to maintain the European patent in amended form
Nov 17, 2023
(Electronic) Receipt
Nov 17, 2023
French translation of claims
Nov 17, 2023
German translation of the claims
Nov 17, 2023
Letter accompanying subsequently filed items
Oct 6, 2023
Communication of bibliographic data
Oct 6, 2023
Communication with request to file translations
Sep 18, 2023
Maintenance of the patent with the documents specified in the final decision
May 23, 2023
Decision of the Opposition Division and instruction
May 23, 2023
Druckexemplar in opposition procedure
May 23, 2023
Grounds for the decision (Annex) - opposition
May 23, 2023
Interlocutory decision in opposition proceedings
May 23, 2023
Means of redress
May 23, 2023
Scanned annex to a communication - opposition procedure
May 23, 2023
Transmittal of decision / summons - opposition
Oct 13, 2022
Document concerning representation
Mar 29, 2022
(Electronic) Receipt
Mar 29, 2022
Claims
Mar 29, 2022
Description
Mar 29, 2022
Letter accompanying subsequently filed items
Mar 29, 2022
Reply to an examination report in opposition proceedings
Jan 13, 2022
Annex to the communication - opposition
Jan 13, 2022
Brief communication - Opposition proceedings
Jan 13, 2022
Communication inviting the parties to file observations
Jul 14, 2021
(Electronic) Receipt
Jul 14, 2021
Auxiliary request during Opposition procedure
Jul 14, 2021
Auxiliary request during Opposition procedure - 02
Jul 14, 2021
Letter accompanying subsequently filed items
Jul 14, 2021
Reply to an examination report in opposition proceedings
May 6, 2021
Annex to the communication - opposition
May 6, 2021
Brief communication - Opposition proceedings
May 6, 2021
Communication inviting the parties to file observations
May 6, 2021
Internal form - Opposition/addressees
Feb 23, 2021
Brief communication - Opposition proceedings
Feb 23, 2021
Brief communication - Opposition proceedings
Feb 17, 2021
(Electronic) Receipt
Feb 17, 2021
Letter accompanying subsequently filed items
Feb 17, 2021
Withdrawal of an opposition
Jan 25, 2021
Brief communication - Opposition proceedings
Jan 25, 2021
Communication of amended entries
Dec 7, 2020
Request concerning representative opponent
Oct 29, 2020
Brief communication - Opposition proceedings
Oct 26, 2020
(Electronic) Receipt
Oct 26, 2020
Auxiliary request during Opposition procedure
Oct 26, 2020
Auxiliary request during Opposition procedure - 01
Oct 26, 2020
Letter accompanying subsequently filed items
Oct 26, 2020
Main request during Opposition procedure
Oct 26, 2020
Main request during Opposition procedure
Oct 26, 2020
Reply of the patent proprietor to the notice(s) of opposition
Jun 18, 2020
Communication of a notice of opposition and request to file observations
Jun 18, 2020
Notice of further oppositions to opponent(s)
Apr 15, 2020
Communication of a notice of opposition - first information to patent proprietor
Apr 8, 2020
(Electronic) Receipt
Apr 8, 2020
Authorisation
Apr 8, 2020
Citation in opposition procedure - 001
Apr 8, 2020
Citation in opposition procedure - 002
Apr 8, 2020
Citation in opposition procedure - 003
Apr 8, 2020
Citation in opposition procedure - 006
Apr 8, 2020
Citation in opposition procedure - 007
Apr 8, 2020
Consolidated list of cited opposition documents
Apr 8, 2020
Letter accompanying subsequently filed items
Apr 8, 2020
Letter regarding the opposition procedure (no time limit)
Apr 8, 2020
Non-patent literature cited during the opposition procedure - 04
Apr 8, 2020
Non-patent literature cited during the opposition procedure - 05
Apr 8, 2020
Notice of opposition
Jul 22, 2019
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jun 14, 2019
Decision to grant a European patent
May 28, 2019
(Electronic) Receipt
May 28, 2019
French translation of claims
May 28, 2019
German translation of the claims
May 28, 2019
Letter accompanying subsequently filed items
Mar 19, 2019
Bibliographic data of the European patent application
Mar 19, 2019
Communication about intention to grant a European patent
Mar 19, 2019
Intention to grant (signatures)
Mar 19, 2019
Text intended for grant (clean copy)
Mar 19, 2019
Text intended for grant (version for approval)
Feb 28, 2019
Examination started
Jan 15, 2019
(Electronic) Receipt
Jan 15, 2019
Letter accompanying subsequently filed items
Jan 15, 2019
Reply to Written Opinion prepared by the EPO
Oct 26, 2018
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Oct 10, 2018
Communication regarding the transmission of the European search report
Oct 10, 2018
European search opinion
Oct 10, 2018
Information on Search Strategy
Oct 10, 2018
Supplementary European search report
Oct 1, 2018
Search started
Apr 20, 2018
Submission concerning representation
Mar 14, 2018
Notification of forthcoming publication
Jan 8, 2018
Communication regarding possible amendment of the application/payment of claims fee
Jan 5, 2018
Communication to designated inventor
Dec 15, 2017
Copy of the international preliminary report on patentability
Dec 15, 2017
Reply by International Bureau
Dec 15, 2017
Translation of the international preliminary report on patentability
Dec 15, 2017
Transmission of a document (International preliminary examination report)
Dec 13, 2017
Copy of the international preliminary report on patentability
Dec 13, 2017
Translation of the international preliminary report on patentability
Nov 29, 2017
Enquiry with the International Bureau
Nov 16, 2017
(Electronic) Receipt
Nov 16, 2017
Abstract
Nov 16, 2017
Claims
Nov 16, 2017
Description
Nov 16, 2017
Request for entry into the European phase
Oct 6, 2017
Information on entry into European phase
Dec 19, 2016
Priority document (electronically transmitted)
Dec 1, 2016
Copy of the international search report
Dec 1, 2016
Copy of the translated international search report
Dec 1, 2016
International publication pamphlet

EP3305817

ZEON

Application Number: EP16799919A
Filing Date: May 19, 2016
Status: Patent Maintained As Amended; Nov 24, 2023
Publication Date: Dec 27, 2023
External Links: Slate, Register , Google Patents

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Nitrile Group Containing, Highly Saturated Copolymer Rubber

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Dossier Documents

EP3305817