IP Verse

Spacer Expander And Oil Control Ring Including Same

Patent No. EP3779244 (titled "Spacer Expander And Oil Control Ring Including Same") was filed by Kabushiki Kaisha Riken on Mar 29, 2019. The application was issued on Sep 25, 2024.

Patent Summary

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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 DateRepresentative
MAHLEJun 25, 2025AURIGIUM LEISCHNER & LUTHE
MAHLEJun 25, 2025GRAUEL

Dossier Documents

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EP3779244

KABUSHIKI KAISHA RIKEN
Application Number
EP19781732A
Filing Date
Mar 29, 2019
Status
Granted And Under Opposition
Aug 22, 2024
Publication Date
Sep 25, 2024
External Links
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