OPINION

Appellant Shih-Ling Chen filed a complaint in the United States District Court for the District of New Jersey against numerous defendants, alleging constitutional violations and violations of federal statutes and state law in connection with the foreclosure sale of his property. The District Court dismissed the complaint, and denied Chen’s subsequent motion for reconsideration. For the reasons discussed below, we conclude that we lack appellate jurisdiction to review the District Court’s orders because Chen’s appeal was untimely filed.

After Chen filed his complaint in January 2003, several defendants moved to dismiss it. In an order entered October 23, 2003, the District Court granted these motions and dismissed the complaint with prejudice as to a defendant it found immune from suit, and without prejudice as *725 to the other defendants. On November 12, 2003, Chen filed a motion for reconsideration of the October 23 order, alleging that the District Court had ex parte communications with a defendant, challenging its finding of immunity, and arguing the merits of the complaint. The other defendants moved to dismiss the complaint.

Concluding that the claims in Chen’s complaint were premised on conduct he unsuccessfully challenged in state court, on November 26, 2003, the District Court dismissed the complaint with prejudice as to all defendants because it lacked subject matter jurisdiction under the Rooker-Feldman doctrine. 1 The District Court also granted the other defendants’ motions to dismiss based upon their immunity from suit. On December 11, 2003, the District Court entered an order denying Chen’s motion for reconsideration of its October 23 order.

On January 9, 2004, Chen filed a post-judgment motion for reconsideration, again alleging that the District Court had ex parte communications with a defendant, challenging its finding of immunity and arguing the merits of his complaint. In an order entered June 28, 2004, the District Court denied the motion, finding it untimely and stating that it had already addressed Chen’s arguments in denying his November 12 motion for reconsideration of its October 23 order. Chen filed a notice of appeal on July 26,2004.

Although the parties have not challenged the timeliness of Chen’s notice of appeal, we have a continuing obligation to examine our jurisdiction. Smith v. Evans, 853 F.2d 155, 157 (3d Cir. 1988). The District Court entered its final order on December 11, 2003, when it denied Chen’s November 12 motion for reconsideration of its October 23 order. At this time, the District Court had disposed of all pending motions and had adjudicated all of Chen’s claims against all of the defendants. Chen had thirty days to file an appeal absent the filing of a timely post-judgment motion that tolled the time to file an appeal. See Fed. R.App. P. 4(a)(1)(A), 4(a)(4).

The District Court properly found Chen’s January 9 motion for reconsideration untimely under Federal Rule of Civil Procedure 59(e) because it was filed more than ten days after it entered its final order. An untimely motion for reconsideration does not toll the time to file an appeal. United States v. Fiorelli, 337 F.3d 282, 288 (3d Cir. 2003). 2 Because Chen’s January 9 motion has no tolling effect, his notice of appeal filed on July 26, 2004— more than thirty days after the District Court entered its December 11 final order, see Fed. R.App. P. 4(a)(1)(A) — is untimely. Thus, the Court lacks jurisdiction to review this order. See Browder v. Director, Dep’t of Corrections, 434 U.S. 257, 264, 98 S.Ct. 556, 54 L.Ed.2d 521 (1978) (stating that the time limit for filing a notice of appeal is mandatory and jurisdictional). To the extent Chen seeks to appeal the June 28, 2004 order denying his motion for reconsideration, the Court lacks jurisdiction because any substantive action a court takes on an untimely motion is a nullity. *726 Smith, 853 F.2d at 159. See also Amatangelo v. Borough of Donora, 212 F.3d 776, 780 (3d Cir. 2000) (stating that an untimely motion for reconsideration is “void and of no effect”).

Accordingly, we will dismiss this appeal for lack of appellate jurisdiction.