When the insurance cover of the person liable for the damage has been exhausted or has expired, the insurer shall immediately notify, by registered letter with acknowledgement of receipt, the victim or his beneficiaries, the person considered to be liable, the Office and, if the damage falls within its scope, the fund set up under article L. 426-1 of the Insurance Code.
The four-month period provided for in article L. 1142-14 runs from the date of receipt by the Office of the insurer’s letter.