N.H. Super. Ct. Civ. R. 28

(a)(i) Any party, desiring to obtain admission of the signature on or the genuineness of any relevant document or of any relevant facts which he or she believes not to be in dispute, may, after 30 days after the date the defendant is served with the Summons and Complaint, without leave of court, serve an original request therefor, accompanied by any documents involved, to the adverse party or his or her representative. Each of the matters of which an admission is requested shall be deemed admitted unless within 30 days after such service the party requested serves a copy thereof to the party requesting such admission, or his or her attorney or non-attorney representative, either a sworn denial thereof or a written objection on the ground of privilege or that it is otherwise improper.

(ii) Notwithstanding (i) above, signatures and endorsements of all written instruments declared on will be considered as admitted unless the party disputing the signature or endorsement shall serve notice on the opposing party that they are disputed within 30 days after the date the defendant files an Answer. See Rule 37(c)

(b) If objection is made to part of a request, the remainder shall be answered within the time limit, and when good faith requires that a party qualify his or her answer or deny only part of a matter, he or she shall specify so much of it as is true and qualify or deny the remainder.

(c) Any party, who without good reason or in bad faith, denies under this rule any signature or fact which has been requested and which is thereafter proved, or who without good reason or in bad faith requests such admission under this rule and thereafter fails to prove it, may, on motion of the other party, be ordered to pay the reasonable expense, including counsel fees, incurred by such other party in proving the signature or fact or in denying the request, as the case may be.