§ 515.203 Effect of transfers violating the provisions of this part.

(a) Any transfer after the “effective date” which is in violation of any provision of this part or of any regulation, ruling, instruction, license, or other direction or authorization thereunder and involves any property in which a designated national has or has had an interest since such “effective date” is null and void and shall not be the basis for the assertion or recognition of any interest in or right, remedy, power or privilege with respect to such property.

(b) No transfer before the “effective date” shall be the basis for the assertion or recognition of any right, remedy, power, or privilege with respect to, or interest in, any property in which a designated national has or has had an interest since the “effective date” unless the person with whom such property is held or maintained had written notice of the transfer or by any written evidence had recognized such transfer prior to such “effective date.”