The Weekly Litigation News Digest is now live. Subscribe now

IP Verse

Silicon Nitride Powder And Production Method Therefor, And Production Method For Silicon Nitride Sintered Body - EP3950582

The patent EP3950582 was granted to Denka on Dec 13, 2023. The application was originally filed on Mar 26, 2020 under application number EP20783738A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

EP3950582

DENKA
Application Number
EP20783738A
Filing Date
Mar 26, 2020
Status
Granted And Under Opposition
Nov 10, 2023
Publication Date
Dec 13, 2023
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

HOEGERSep 11, 2024-ADMISSIBLE

Patent Citations (13) New

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

Citation PhasePublication Number
DESCRIPTIONJP2011077546
DESCRIPTIONJPH07206409
INTERNATIONAL-SEARCH-REPORTJP2000302421
INTERNATIONAL-SEARCH-REPORTJPH01197307
INTERNATIONAL-SEARCH-REPORTJPH04114908
INTERNATIONAL-SEARCH-REPORTWO2013146713
OPPOSITIONDE4013923
OPPOSITIONEP2832687
OPPOSITIONJPH04114908
OPPOSITIONJPH0532405
OPPOSITIONJPH06329404
SEARCHEP3020686
SEARCHEP3156366

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