Gary Waetzig, Petitioner v. Halliburton Energy Services, Inc.

The Supreme Court ruled unanimously that a plaintiff who voluntarily dismisses their lawsuit without prejudice under Federal Rule of Civil Procedure 41(a) can later ask a court to reopen the case under Rule 60(b). The Court determined that such a dismissal qualifies as a "final proceeding," allowing district courts to correct mistakes or provide relief even after a case has been voluntarily withdrawn.