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IP Verse

Piston Ring - EP3421846

The patent EP3421846 was granted to Kabushiki Kaisha Riken on Nov 18, 2020. The application was filed on Feb 21, 2017 under application number EP17756486A. The patent is currently recorded with a legal status of "Opposition Rejected".

EP3421846

KABUSHIKI KAISHA RIKEN
Application Number
EP17756486A
Filing Date
Feb 21, 2017
Status
Opposition Rejected
Jun 16, 2023
Publication Date
Nov 18, 2020
External Links
Slate, Register, Google Patents

Patent Summary

Patent Family

Patent Family

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.

CompanyOpposition DateRepresentativeOpposition Status
MAHLEAug 17, 2021BRP RENAUD & PARTNER MBB RECHTSANWALTE PATENTANWALTE STEUERBERATERADMISSIBLE

Patent Citations (34) New

Patent citations refer to prior patents cited during different phases such as opposition or international search.

Citation PhasePublication Number
DESCRIPTIONJP2011169388
DESCRIPTIONJPS5615437U
INTERNATIONAL-SEARCH-REPORTJP2002054499
INTERNATIONAL-SEARCH-REPORTJP2011169388
INTERNATIONAL-SEARCH-REPORTJPH01224569
INTERNATIONAL-SEARCH-REPORTJPS5615437U
INTERNATIONAL-SEARCH-REPORTJPS6218775Y
INTERNATIONAL-SEARCH-REPORTJPS636270U
INTERNATIONAL-SEARCH-REPORTUS6470792
INTERNATIONAL-SEARCH-REPORTWO2012118036
OPPOSITIONDE102010060753
OPPOSITIONDE19755425
OPPOSITIONEP0256069
OPPOSITIONEP2206909
OPPOSITIONGB2164418
OPPOSITIONJP2000170602
OPPOSITIONJP2011169388
OPPOSITIONJP2011214662
OPPOSITIONJP2014222039
OPPOSITIONJPH06137428
OPPOSITIONJPS5615437U
OPPOSITIONJPS5832153U
OPPOSITIONJPS62209270
OPPOSITIONUS1613410
OPPOSITIONUS2004094902
OPPOSITIONUS2005184466
OPPOSITIONUS2014271040
OPPOSITIONUS3414277
SEARCHEP1413806
SEARCHEP2884136
SEARCHJP2011169388
SEARCHJP2011214662
SEARCHJPH0742417U
SEARCHUS2002033579

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.

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