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Method For Manufacturing A Hairspring With A Predetermined Stiffness By Removing Material

Patent No. EP3181938 (titled "Method For Manufacturing A Hairspring With A Predetermined Stiffness By Removing Material") was filed by Csem Centre Suisse Delectronique ET DE Microtechnique Recherche ET Dveloppement on Dec 18, 2015. The application was issued on Feb 20, 2019.

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
RICHEMONTNov 20, 2019GRUNECKER PATENT
SIGATECNov 20, 2019BOVARD

Dossier Documents

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EP3181938

CSEM CENTRE SUISSE DELECTRONIQUE ET DE MICROTECHNIQUE RECHERCHE ET DVELOPPEMENT
Application Number
EP15201330A
Filing Date
Dec 18, 2015
Status
Granted And Under Opposition
Jan 18, 2019
Publication Date
Feb 20, 2019
External Links
Slate, Register , Google Patents