The weekly litigation news digest is live. Subscribe now

Magnesium Oxide For Annealing Separator, And Grain-Oriented Electromagnetic Steel Sheet - EP3438291

The patent EP3438291 was granted to Tateho Chemical Industries on Jun 24, 2020. The application was originally filed on Mar 16, 2017 under application number EP17774397A. The patent is currently recorded with a legal status of "Opposition Rejected".

EP3438291

TATEHO CHEMICAL INDUSTRIES
Application Number
EP17774397A
Filing Date
Mar 16, 2017
Status
Opposition Rejected
Mar 7, 2025
Publication Date
Jun 24, 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

Get instant alerts for new oppositions and patent status changes

DEAD SEA BROMINEMar 24, 2021HOYNG ROKH MONEGIER -

Patent Citations (20) New

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

Citation PhasePublication Number
DESCRIPTIONJP2650817B
DESCRIPTIONJP2690841B
DESCRIPTIONJP3021241B
DESCRIPTIONJP3043975B
DESCRIPTIONJP3091096B
DESCRIPTIONJP3650525B
DESCRIPTIONJP4192282B
DESCRIPTIONJPH0425349
DESCRIPTIONJPH1088244
DESCRIPTIONJPS5414566
DESCRIPTIONJPS5745472
INTERNATIONAL-SEARCH-REPORTJP2011202224
INTERNATIONAL-SEARCH-REPORTJP2015205797
INTERNATIONAL-SEARCH-REPORTJPH11181525
INTERNATIONAL-SEARCH-REPORTWO2008047999
INTERNATIONAL-SEARCH-REPORTWO2013051270
OPPOSITIONJPH11158558
OPPOSITIONUS4249966
SEARCHEP2765219
SEARCHJP2012082330

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