Section 7612.

(a) Except as provided in Chapter 1 (commencing with Section 7540) and Chapter 3 (commencing with Section 7570) of Part 2 or in Section 20102, a presumption under Section 7611 is a rebuttable presumption affecting the burden of proof and may be rebutted in an appropriate action only by clear and convincing evidence.

(b) If two or more presumptions arise under Section 7610 or 7611 that conflict with each other, or if a presumption under Section 7611 conflicts with a claim pursuant to Section 7610, the presumption which on the facts is founded on the weightier considerations of policy and logic controls.

(c) The presumption under Section 7611 is rebutted by a judgment establishing paternity of the child by another man.

(d) Within two years of the execution of a voluntary declaration of paternity, a person who is presumed to be a parent under Section 7611 may file a petition pursuant to Section 7630 to set aside a voluntary declaration of paternity. The court's ruling on the petition to set aside the voluntary declaration of paternity shall be made taking into account the validity of the voluntary declaration of paternity, and the best interests of the child based upon the court's consideration of the factors set forth in subdivision (b) of Section 7575, as well as the best interests of the child based upon the nature, duration, and quality of the petitioning party's relationship with the child and the benefit or detriment to the child of continuing that relationship. In the event of any conflict between the presumption under Section 7611 and the voluntary declaration of paternity, the weightier considerations of policy and logic shall control.

(e) A voluntary declaration of paternity is invalid if, at the time the declaration was signed, any of the following conditions exist:

(1) The child already had a presumed parent under Section 7540.

(2) The child already had a presumed parent under subdivision (a), (b), or (c) of Section 7611.

(3) The man signing the declaration is a sperm donor, consistent with subdivision (b) of Section 7613.

(Amended by Stats. 2011, Ch. 185, Sec. 3. Effective January 1, 2012.)