Filing Deadlines. A pro se habeas petition is “filed” when it is given to prison authorities for forwarding to the court or placed directly into the prison mail system. Under 28 U.S.C. § 2244(d)(1), § 2254 petitions must be filed within one year from the latest of: (1) final judgment on direct review; (2) “the expiration of the time for seeking such review”; (3) removal of any state-imposed impediment that unconstitutionally prevented filing of such petition; (4) the Supreme Court's announcement of a new, retroactively applicable constitutional right; or (5) the date on which facts supporting claims presented could have been discovered through exercise of due diligence.

This one-year limitation is tolled while a properly filed application for state post-conviction or other collateral review is pending, even if that application contains procedurally barred claims. However, “an application for federal habeas corpus review is not 'an application for [s]tate post-conviction or other collateral review,”’ and thus does not toll the one-year limitation for any subsequent federal habeas applications.