Many of these couples sign prenuptial agreements while in foreign countries (international prenuptial agreement). Often, couples believe that once the agreement is signed and the couple is married, that the agreement will be effective and valid within any country.
Unfortunately, this is not the case. For example, a Thailand prenuptial agreement is invalid unless it is officially registered in
the marriage. This is not the case as with the Thailand US
and the . UK
This video prepared by Thailand Attorneys Chaninat & Leeds explains more: