R.I. Gen. Laws § 34-11-36: Defective acknowledgments.

Any acknowledgment of or upon any instrument used in conveying, directly or indirectly, any interest in real estate in this state, including power of attorney, where the instrument has been on record for a period of ten (10) years, shall be construed to be a valid acknowledgment in accordance with the requirements of chapter 12 of this title; provided, nevertheless, that if, within the period of ten (10) years, a proceeding is commenced in superior court relative to the validity of the acknowledgment, and a notice of lis pendens is duly recorded and indexed with the appropriate records of land evidence, the instrument shall be subject to the further order of the court involved in any such proceeding.