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IP Verse

Power Conversion Device - EP3228490

The patent EP3228490 was granted to Hitachi on Jan 15, 2025. The application was filed on Jan 20, 2017 under application number EP17152507A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

EP3228490

HITACHI
Application Number
EP17152507A
Filing Date
Jan 20, 2017
Status
Patent Maintained As Amended
Dec 13, 2024
Publication Date
Jan 15, 2025
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
BOMBARDIER TRANSPORTATIONSep 15, 2020RAMRATHADMISSIBLE

Patent Citations (13) New

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

Citation PhasePublication Number
DESCRIPTIONJP4479305B
OPPOSITIONDE19524115
OPPOSITIONEP1881590
OPPOSITIONEP2149973
OPPOSITIONEP2441639
OPPOSITIONJP2005287214
OPPOSITIONJPH09219904
OPPOSITIONJPS62299474
SEARCHCA2848252
SEARCHEP2149973
SEARCHEP2838188
SEARCHJP2004328838
SEARCHJP2005287214

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.

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