Continuing violations doctrine

"In tort law, if a defendant commits a series of illegal acts against another person, or, in criminal law, if someone commits a continuing crime (like molesting a child over a long period of time, which can be charged as a single offense), the period of limitation may begin to run from the last act in the series. In the 8th Circuit case of Treanor v. MCI Telecommunications, Inc., the court explained that the continuing violations doctrine "tolls [i.e freezes] the statute of limitations in situations where a continuing pattern forms due to [illegal] acts occurring over a period of time, as long as at least one incident ... occurred within the limitations period."

http://en.wikipedia.org/wiki/Statute_of_limitations