Section 170-B:21 - Appeals and Validation of Adoption DecreesI. An appeal from any final or interlocutory decree rendered by the court may be taken in the manner and time provided in RSA 567-A, except that no appeal shall be allowed from any order or decree involving proceedings for adoption unless taken within 30 days from receipt of such order or decree.II. Subject to the disposition of an appeal upon the expiration of one year after a final adoption decree is issued, the decree cannot be challenged by any person including the petitioner, in any manner upon any ground, including fraud, misrepresentation, failure to give any required notice, or lack of jurisdiction of the parties or of the subject matter. 2004, 255 : 1 , eff. Jan. 2, 2005.