- Patent application: 2023-03-15
- Request for prior art search: 2024-06-21
- Prior art search report: 2024-08-14
- Notice of preliminary rejection: 2024-08-19
- Amendment and written argument: 2024-08-22
- Decision to grant: 2024-11-25
- Registration: 2025-01-22
- Title of invention: Filter leak measuring apparatus using laser
[Note] This case was registered after we responded to the notice of preliminary rejection.
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