Under what conditions will claims for pre-emption not be heard?
Claims for pre-emption will not be heard if (1) the sale has taken place by public auction under procedures laid down by law, (2) the sale has been between certain family members such as ascendants and descendants, spouses, relatives up to the fourth degree, or relatives by marriage up to the second degree, or (3) the pre-emptor has expressly or implicitly waived his right.