The weekly litigation news digest is live. Subscribe now

IP Verse

Catalyst For Solid Polymer Electrolyte Fuel Cells And Method For Producing Same - EP3614472

The patent EP3614472 was granted to Tanaka Kikinzoku Kogyo KK on Jun 11, 2025. The application was filed on Apr 16, 2018 under application number EP18787888A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

EP3614472

TANAKA KIKINZOKU KOGYO KK
Application Number
EP18787888A
Filing Date
Apr 16, 2018
Status
Patent Maintained As Amended
May 9, 2025
Publication Date
Jun 11, 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
MARKS & CLERKApr 28, 2022MARKS & CLERKADMISSIBLE

Patent Citations (14) New

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

Citation PhasePublication Number
DESCRIPTIONJP2010027364
DESCRIPTIONJP2011150867
INTERNATIONAL-SEARCH-REPORTJP2005302527
INTERNATIONAL-SEARCH-REPORTJP2009249722
INTERNATIONAL-SEARCH-REPORTJP2013131420
INTERNATIONAL-SEARCH-REPORTJPH04141236
INTERNATIONAL-SEARCH-REPORTJPH10302809
OPPOSITIONEP1309024
OPPOSITIONWO2016063968
SEARCHEP2650956
SEARCHEP2953195
SEARCHEP3211696
SEARCHUS2007087261
SEARCHWO2016063968

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