R.I. Gen. Laws § 6-36-23: Limitation of actions.

Any action brought to enforce the provisions of this chapter shall be barred unless commenced within four (4) years after the cause of action arose, or if the cause of action is based upon a conspiracy in violation of this chapter, within four (4) years after the plaintiff discovered, or by the exercise of reasonable diligence should have discovered, the facts relied upon for proof of the conspiracy. No cause of action barred on July 1, 1979, shall be revived by this chapter. For purposes of this section, a cause of action for a continuing violation is deemed to arise at any time during the period of the violation.