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IP Verse

Colored Translucent Zirconia Sintered Body And Powder, And Use Thereof - EP3159323

The patent EP3159323 was granted to Tosoh on Jun 19, 2019. The application was filed on Jun 22, 2015 under application number EP15812269A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

EP3159323

TOSOH
Application Number
EP15812269A
Filing Date
Jun 22, 2015
Status
Granted And Under Opposition
May 17, 2019
Publication Date
Jun 19, 2019
External Links
Slate, Register, Google Patents

Patent Summary

Colored translucent zirconia sintered body for dental applications that mimics the aesthetics of natural teeth. The sintered body contains zirconia with specific compositions of yttria, erbia, cobalt, iron, and aluminum. The compositions provide translucency, strength, and stability for dental use without needing porcelain layering. The zirconia powder is molded and sintered under normal pressure. This allows producing translucent zirconia dental parts like front teeth that have natural tooth-like color and transparency. The compositions also prevent color change in the oral environment.

Patent Family

Patent Family

Patent Oppositions (2)

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
TREIBACHER INDUSTRIEMar 19, 2020SCHWARZ & PARTNER PATENTANWALTEADMISSIBLE
SOLVENTUM PROPERTIES M HEALTHCARE GERMANYMar 12, 2020BREMADMISSIBLE

Patent Citations (24) New

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

Citation PhasePublication Number
INTERNATIONAL-SEARCH-REPORTJP2005289721
INTERNATIONAL-SEARCH-REPORTJPS6259571
INTERNATIONAL-SEARCH-REPORTWO2008013099
INTERNATIONAL-SEARCH-REPORTWO2009125793
INTERNATIONAL-SEARCH-REPORTWO2013018728
OPPOSITIONEP0218853
OPPOSITIONEP1820786
OPPOSITIONEP2263988
OPPOSITIONEP2738147
OPPOSITIONEP2939993
OPPOSITIONEP3088373
OPPOSITIONJP2008222450
OPPOSITIONUS2009246735
OPPOSITIONUS2010003630
OPPOSITIONUS2010216095
OPPOSITIONUS2013224454
OPPOSITIONUS5219805
OPPOSITIONWO2008098157
OPPOSITIONWO2012125885
SEARCHEP0218853
SEARCHEP2263988
SEARCHEP2639210
SEARCHEP3088373
SEARCHJP2008222450

Dossier Documents

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