Whether the French invention patent application can be DAS

• via Paris Convention : 12 months from earliest priority date.
• Validation of European Patent in EPO member states: 3 months from the date of European patent grant.

yes

The novelty grace period is 6 months before the filing date/priority date.

INPI only conducts a formality examination of the invention patent application, but still needs to pay the search fee within one month from the filing date and conduct a search by the EPO, and the search result does not affect the granted result.

• Grant fee: The applicant needs to pay the granted fee after receiving the granted notice.
• Annuity: From the first year of application, the annual fee is paid year by year, and the annual fee for the first year is included in the application fee. The annual fee for the second year is payable on the anniversary date of the patent application. If the annual fee is overdue, you can pay it within a grace period of 6 months, and pay a late fee at the same time.

no

25 years

yes. Multiple designs may be included in one French design application, provided that the designs belong to the same class in the International Classification of Designs.