EP3421846

KABUSHIKI KAISHA RIKEN
Application Number
EP17756486A
Filing Date
Feb 21, 2017
Status
Opposition Rejected
Jun 16, 2023
Grant Date
Nov 18, 2020
External Links
Slate, Register

Biblio Summary

The patent EP3421846B1 was granted on Nov 18, 2020 by Kabushiki Kaisha Riken The patent is currently Opposition Rejected.

The table below shows 1 patent oppositions filed on the patent at EPO, listing each opposing company and filing date. Tracking these filings indicates that the applicant is active in this industry, while opposing companies may be signaling their own interest in competing within the same space. These disputes are essential for insights into competitor actions, patent strategy and emerging technological trends.

CompanyOpposition DateOpposition Status

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MAHLE INTERNATIONAL GMBHAug 17, 2021ADMISSIBLE

The table below shows the patents of Kabushiki Kaisha Riken that have been opposed by other companies.

Patent NumberTitleGrant DateOpposition Count
EP3321543Internal Combustion Engine Piston RingApr 17, 20241
EP3660180Sliding Member And Piston RingApr 12, 20231
EP3064810Piston Ring And Method For Manufacturing SameMar 31, 20211