Swiss Civil Code

¹ The chal­lenge must be filed with­in one year of the date on which the claimant learned of the re­cog­ni­tion and the fact that the re­cog­nising per­son is not the fath­er, or that an­oth­er man had sexu­al in­ter­course with the moth­er around the time of the con­cep­tion, or on which he or she learned of his or her er­ror or on which the threat ceased, but in any event with­in five years of the re­cog­ni­tion.

² In all cases, the child may file the chal­lenge at any time pri­or to the elapse of one year after at­tain­ing the age of ma­jor­ity.²⁶⁸

³ Once these time lim­its have ex­pired, a chal­lenge of re­cog­ni­tion is ad­miss­ible provided there is good cause for the delay.