The weekly litigation news digest is live. Subscribe now

IP Verse

Hot Work Tool Steel Having Excellent Toughness, And Process Of Producing Same - EP2682491

The patent EP2682491 was granted to Hitachi Metals on Jul 4, 2018. The application was filed on Feb 28, 2012 under application number EP12752790A. The patent is currently recorded with a legal status of "Revoked".

EP2682491

HITACHI METALS
Application Number
EP12752790A
Filing Date
Feb 28, 2012
Status
Revoked
Jul 31, 2024
Publication Date
Jul 4, 2018
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
UDDEHOLMSJan 29, 2019NORENS PATENTBYRAADMISSIBLE

Patent Citations (17) New

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

Citation PhasePublication Number
DESCRIPTIONJP2003155540
DESCRIPTIONJP2007224418
INTERNATIONAL-SEARCH-REPORTJP2004018925
INTERNATIONAL-SEARCH-REPORTJP2004100027
INTERNATIONAL-SEARCH-REPORTJP2007224418
OPPOSITIONEP0733719
OPPOSITIONEP2503016
OPPOSITIONJP2000119818
OPPOSITIONJP2004019001
OPPOSITIONJP2007224418
OPPOSITIONUS4886640
OPPOSITIONWO9950468
SEARCHEP2065483
SEARCHEP2138597
SEARCHJP2004018925
SEARCHJP2004100027
SEARCHJP2007224418

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