Federal Act
on Private International Law
(PILA)

If neither spouse has dom­i­cile or ha­bitu­al res­id­ence in Switzer­land, and if at least one of them is a Swiss cit­izen, the ju­di­cial or ad­min­is­trat­ive au­thor­it­ies at the place of ori­gin have jur­is­dic­tion to hear ac­tions or to or­der meas­ures re­lat­ing to the ef­fects of mar­riage, provided such ac­tion or re­quest can­not be filed or can­not reas­on­ably be ex­pec­ted to be filed at the dom­i­cile or ha­bitu­al res­id­ence of either spouse.