Compression Piston Ring

Patent No. EP3325856 (titled "Compression Piston Ring") was filed by Federal Mogul Burscheid on Jun 22, 2016. The application was issued on Jul 24, 2019.

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
MAHLE	Apr 23, 2020	BRP RENAUD & PARTNER MBB RECHTSANWALTE PATENTANWALTE STEUERBERATER

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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Mar 23, 2021
Communication to the parties concerning the termination of the opposition proceedings (opponent)
Mar 23, 2021
Communication to the parties concerning the termination of the opposition proceedings (proprietor)
Mar 18, 2021
Termination of the opposition proceedings with revocation of patent
Dec 3, 2020
Advice of delivery
Dec 1, 2020
Advice of delivery
Nov 25, 2020
Acknowledgement of a document
Nov 25, 2020
Acknowledgement of a document
Nov 25, 2020
Decision revoking the European patent
Nov 25, 2020
Decision revoking the European patent
Nov 23, 2020
Brief communication - Opposition proceedings
Nov 13, 2020
Request for revocation of patent
Oct 30, 2020
Brief communication - Opposition proceedings
Oct 30, 2020
Brief communication in opposition procedure - time limit
Oct 28, 2020
Request for revocation of patent
Oct 23, 2020
Request for revocation of patent
Jul 15, 2020
Brief communication - Opposition proceedings
Jul 3, 2020
Letter which had not been notified
Jun 26, 2020
Communication of a notice of opposition and request to file observations
Jun 26, 2020
Notice of further oppositions to opponent(s)
Jun 23, 2020
Consolidated list of cited opposition documents
Jun 22, 2020
Brief communication - Opposition proceedings
Jun 15, 2020
(Electronic) Receipt
Jun 15, 2020
Citation in opposition procedure - 004
Jun 15, 2020
Citation in opposition procedure - 008
Jun 15, 2020
Citation in opposition procedure - 010
Jun 15, 2020
Letter accompanying subsequently filed items
Jun 15, 2020
Letter regarding the opposition procedure (no time limit)
Apr 30, 2020
Communication of a notice of opposition - first information to patent proprietor
Apr 30, 2020
Request for documents
Apr 22, 2020
(Electronic) Receipt
Apr 22, 2020
Citation in opposition procedure - 001
Apr 22, 2020
Citation in opposition procedure - 001
Apr 22, 2020
Citation in opposition procedure - 002
Apr 22, 2020
Citation in opposition procedure - 003
Apr 22, 2020
Citation in opposition procedure - 004
Apr 22, 2020
Citation in opposition procedure - 005
Apr 22, 2020
Citation in opposition procedure - 006
Apr 22, 2020
Citation in opposition procedure - 007
Apr 22, 2020
Citation in opposition procedure - 008
Apr 22, 2020
Citation in opposition procedure - 009
Apr 22, 2020
Citation in opposition procedure - 010
Apr 22, 2020
Citation in opposition procedure - 011
Apr 22, 2020
Notice of opposition
Apr 22, 2020
Notice of opposition
Aug 5, 2019
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Jul 17, 2019
Decision to grant a European patent
Jul 10, 2019
Result of consultation by telephone/in person
Jul 4, 2019
Letter which had not been notified
Jun 6, 2019
English translation of the claims
Jun 6, 2019
Filing of the translations of the claims
Jun 6, 2019
French translation of claims
Apr 3, 2019
Bibliographic data of the European patent application
Apr 3, 2019
Communication about intention to grant a European patent
Apr 3, 2019
Intention to grant (signatures)
Apr 3, 2019
Text intended for grant (clean copy)
Apr 3, 2019
Text intended for grant (version for approval)
Mar 8, 2019
Examination started
Oct 26, 2018
Priority search results
Oct 26, 2018
Reply to invitation to file a copy of priority search results
Oct 19, 2018
Invitation to file a copy of search results(priority)
May 3, 2018
Notification on forthcoming publication of bibliographic data
Mar 9, 2018
Reply to Written Opinion prepared by the EPO
Mar 5, 2018
Matter concerning the application
Mar 5, 2018
Written opinion of the ISA, cover sheet
Mar 2, 2018
Communication regarding comments on written opinion/amendment of application/payment of claims fee
Mar 2, 2018
Communication to designated inventor
Feb 12, 2018
Copy of the international preliminary report on patentability
Jan 8, 2018
(Electronic) Receipt
Jan 8, 2018
Authorisation
Jan 8, 2018
Request for entry into the European phase
Dec 6, 2017
Information on entry into European phase
Feb 23, 2017
Priority document (electronically transmitted)
Feb 2, 2017
Copy of the international search report
Feb 2, 2017
Published international application - A1
Oct 7, 2016
Written opinion of the ISA, boxes No. I to VIII
Oct 7, 2016
Written opinion of the ISA, cover sheet
Oct 7, 2016
Written opinion of the ISA, supplemental box

EP3325856

FEDERAL MOGUL BURSCHEID

Application Number: EP16751157A
Filing Date: Jun 22, 2016
Status: Revoked; Mar 19, 2021
Publication Date: Jul 24, 2019
External Links: Slate, EP3325856B1, Google Patents

IP Verse

Compression Piston Ring

Patent Summary

Patent Family

Patent Oppositions

Dossier Documents

EP3325856