The weekly litigation news digest is live. Subscribe now

IP Verse

Lubricating Oil Composition - EP3950905

The patent EP3950905 was granted to Idemitsu Kosan on Jan 17, 2024. The application was filed on Mar 25, 2020 under application number EP20784748A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

EP3950905

IDEMITSU KOSAN
Application Number
EP20784748A
Filing Date
Mar 25, 2020
Status
Granted And Under Opposition
Dec 15, 2023
Publication Date
Jan 17, 2024
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
AFTON CHEMICALOct 15, 2024J A KEMPADMISSIBLE

Patent Citations (42) New

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

Citation PhasePublication Number
DESCRIPTIONJP2003252887
DESCRIPTIONJP2004002866
DESCRIPTIONJP2017149830
DESCRIPTIONJP2019065480
DESCRIPTIONJPH0322438B
DESCRIPTIONUS2018258365
DESCRIPTIONUS2018258366
INTERNATIONAL-SEARCH-REPORTJP2015140354
INTERNATIONAL-SEARCH-REPORTJP2015147890
INTERNATIONAL-SEARCH-REPORTJP2017105886
INTERNATIONAL-SEARCH-REPORTJP2018002794
INTERNATIONAL-SEARCH-REPORTWO2007114260
INTERNATIONAL-SEARCH-REPORTWO2016159006
INTERNATIONAL-SEARCH-REPORTWO2018070362
OPPOSITIONEP2011854
OPPOSITIONEP3480285
OPPOSITIONEP3626805
OPPOSITIONEP3636730
OPPOSITIONEP4083173
OPPOSITIONJP2019239443
OPPOSITIONUS2006223718
OPPOSITIONUS2015175927
OPPOSITIONUS2017198234
OPPOSITIONUS2017369808
OPPOSITIONUS2018072962
OPPOSITIONUS2018258365
OPPOSITIONUS2018258366
OPPOSITIONUS2018334636
OPPOSITIONUS2019002784
OPPOSITIONUS2021189284
OPPOSITIONUS2021214640
OPPOSITIONWO2018003815
OPPOSITIONWO2018070362
OPPOSITIONWO2018212339
OPPOSITIONWO2018212340
OPPOSITIONWO2019092492
OPPOSITIONWO2019221295
OPPOSITIONWO2019221296
OPPOSITIONWO2021132518
SEARCHEP2011854
SEARCHEP3101097
SEARCHUS2018072962

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

  • Get instant alerts for new documents