| Patent Number | Title | Applicant | Opposition Date |
|---|---|---|---|
| EP3769162 | Method For Producing Silicon Watchmaking Components | PATEK PHILIPPE SA GENÈVE | May 10, 2023 |
| EP3181938 | Method For Manufacturing A Hairspring With A Predetermined Stiffness By Removing Material | CSEM CENTRE SUISSE D'ELECTRONIQUE ET DE MICROTECHNIQUE SA - RECHERCHE ET DÉVELOPPEMENT | Nov 20, 2019 |
| EP3181940 | Method For Manufacturing A Hairspring With A Predetermined Stiffness By Localised Removal Of Material | CSEM CENTRE SUISSE D'ELECTRONIQUE ET DE MICROTECHNIQUE SA - RECHERCHE ET DÉVELOPPEMENT | Nov 6, 2019 |
| Patent Number | Grant Date | Title | Total Oppositions |
|---|---|---|---|
| EP3845770 | Jun 28, 2023 | Method For Manufacturing Timepiece Hairsprings | 1 |
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