The United States Supreme Court has held a state intestate succession statute which denies illegitimate children the right to inherit from their father's estate to be a violation of equal protection.
Trimble v. Gordon, 430 U.S. 762 (1977).
Lauren R. Fertelmes,
Constitutional Law - Equal Protection - Suspect Classification - Illegitimacy - Intestate Succession,
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol16/iss3/13