Swiss Civil Code

¹ An ac­tion for an­nul­ment is brought ex of­fi­cio by the com­pet­ent can­ton­al au­thor­ity at the dom­i­cile of the spouses; in ad­di­tion, any in­ter­ested party is en­titled to bring such ac­tion.¹⁹² Provided this is com­pat­ible with their du­ties, the fed­er­al and can­ton­al au­thor­it­ies shall con­tact the au­thor­ity com­pet­ent for the ac­tion if they have reas­on to be­lieve that there are grounds for an­nul­ment.¹⁹³

² If the mar­riage has been oth­er­wise dis­solved, the au­thor­ity may no longer seek an an­nul­ment ex of­fi­cio; however, any in­ter­ested party may seek a de­clar­a­tion of an­nul­ment.¹⁹⁴

³ An ac­tion for an­nul­ment may be brought at any time. However, an ac­tion for nullity on the grounds that either spouse was a minor when the part­ner­ship was re­gistered may be in­sti­tuted only be­fore the spouse in ques­tion reaches 25 years of age.¹⁹⁵