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(a) The election by a surviving spouse to take against the will may be made at any time within one (1) month after the expiration of the time limited for the filing of claims.
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(b) However, if, at the expiration of the period for making the election, litigation is pending to test the validity or to determine the effect or construction of the will or to determine the existence of issue surviving the deceased or to determine any other matter of law or fact which would affect the amount of the share to be received by the surviving spouse, the right of the surviving spouse to make an election shall not be barred until the expiration of one (1) month after the date of the final order of the circuit court adjudicating the issue in litigation.
