ORDER

GREGORY G. HOLLOWS, Magistrate Judge.

This diversity action against numerous defendants was referred to the undersigned by E.D. Cal. L.R. 302(c)(21), pursuant to 28 U.S.C. § 636(b)(1). Plaintiff has paid the filing fee and is proceeding in this action pro se. On February 16, 2012, the court dismissed plaintiff's complaint with leave to amend. In the event plaintiff elects to amend, the court ordered plaintiff to file and serve a first amended complaint on the defendants that have already been served with process within 28 days of that order. The court further ordered plaintiff to complete service with the first amended complaint on defendants that have not yet been served with process within 60 days of that order. (See Dkt. No. 16.)

Subsequently, on March 2, 2012, defendant Theresa Ravandi filed a motion and amended motion to dismiss plaintiff's complaint for insufficiency of service of process pursuant to Fed. R. Civ. P. 12(b)(5), noticed for hearing on April 19, 2012. (Dkt. Nos. 17, 21.) After reviewing the papers in support of the motion, the court concludes that further briefing or oral argument would not be of material assistance in resolving the motion. Accordingly, the April 19, 2012 hearing will be vacated.

According to defendant Ravandi, plaintiff left the original complaint at her residence on February 15, 2012. (See Declaration of Theresa Ravandi, Dkt. No. 18 ["Ravandi Decl."] ¶ 2.) On February 16, 2012, the same day that this court dismissed the original complaint with leave to amend, the original complaint was delivered to defendant Ravandi's business where it was accepted on her behalf. (Ravandi Decl. ¶ 3.) A second copy of the original complaint was mailed to defendant Ravandi by registered mail that same day. (Ravandi Decl. ¶ 3.) Although defendant Ravandi concedes that the original complaint served at her place of business and by registered mail on February 16, 2012 was properly served, she argues that the service was not effective until February 26, 2012 — ten days later. See Cal. Civ. Proc. Code § 415.20(a).1 Thus, because the original complaint served was dismissed on February 16, 2012, service was insufficient, and defendant Ravandi seeks dismissal of the original complaint under Fed. R. Civ. P. 12(b)(5). However, because the court already dismissed plaintiff's original complaint, defendant Ravandi's motion to dismiss is moot. The court cannot dismiss a complaint that has already been dismissed.

Additionally, in regard to service of process, "the provisions of Rule 4 outlining the manner of service are construed liberally to uphold service." See Crane v. Battelle, 127 F.R.D. 174, 177 (S.D. Cal. 1989); see also United Food & Commercial Workers Union, Locals 197 et al. v. Alpha Beta Co., 736 F.2d 1371, 1382 (9th Cir. 1984) ("Rule 4 is a flexible rule that should be liberally construed so long as a party receives sufficient notice of the complaint.") Nevertheless, even with actual notice, there must be substantial compliance with the requirements of Rule 4. Jackson v. Hayakawa, 682 F.2d 1344, 1347 (9th Cir. 1982). "In exercising its discretion under Rule 4 a court may consider whether the plaintiff's error resulted from innocent mistake or inexcusable neglect." Crane, 127 F.R.D. at 177-78.

Here, there has been substantial compliance with Rule 4's requirements. Defendant Ravandi concedes that the original complaint served at her place of business and by registered mail on February 16, 2012 was properly served. Plaintiff's service of the original complaint was obviously an innocent mistake resulting from the fact that the court's order dismissing the original complaint was issued that same day. Although defendant Ravandi points out that service was technically only effective on February 26, 2012, she cannot seriously contend that she suffered prejudice to some substantial right. See Crane, 127 F.R.D. at 178. She clearly received sufficient notice of the litigation and has already retained counsel to represent her. Also, no further action from her is required until she is served with a copy of plaintiff's first amended complaint, if plaintiff elects to amend. Requiring plaintiff to re-serve defendant Ravandi with process is unnecessary and would only result in further delay. Indeed, defendant Ravandi expressly asks the court to order that further service of papers be made on her counsel.

Accordingly, for the reasons outlined above, IT IS HEREBY ORDERED that:

1. The April 19, 2012 hearing on defendant Ravandi's motion is vacated.

2. Defendant Ravandi's motion to dismiss (dkt. nos. 17, 21) is denied as moot.

3. If plaintiff elects to file a first amended complaint, plaintiff shall serve the first amended complaint on counsel for defendant Ravandi within 28 days of this order. No further service of process on defendant Ravandi is required.