Opinion by
T1 Tom and Bertha Tisdale appeal from the district court's order dismissing their claim against ITW Ramset/Red Head. The issue in this action for personal injury is whether the district court erred in holding the Tisdales' claim time-barred as a matter of law. Upon review of the record and applicable law, we conclude that the court erred and we reverse.
FACTS AND PROCEDURAL HISTORY
12 On March 16, 2000, Tom Tisdale was injured in the course of his employment when a nail gun malfunctioned, sending a nail into his right eye. On March 18, 2002, Tom *610 and his wife sued Hilti, Inc., Hilti Group, Hilti International, Hilti Corporation, and "John Doe" on theories of negligence, manufacturers products Hability, and breach of warranty. On September 9; 2002, the Tis-dales filed an amended petition substituting ITW as a defendant in place of "John Doe."
{3 ITW filed a motion to dismiss, asserting that the Tisdales' claim against it was barred by the statute of limitations. Following the exchange of briefs and a hearing, the district court granted ITW's motion. The Tisdales dismissed their claims against the other defendants and appeal. ©
STANDARD OF REVIEW
T4 Although ITW filed a motion to «dismiss, the Tisdales attached an affidavit to their supplemental response. As the affidavit was not excluded by the trial court, we treat ITW's motion as one for summary judgment. 12 O.S. Supp.2002 § 2012(B); see also Kang v. Kang,
DISCUSSION
T5 There is no dispute that the Tisdales' amended petition was filed after the limitations period éxpired. See 12 0.9.2001 § 95(8). Their claim against ITW is timely only if the amended petition relates back to the date of the original petition.
An amendment of a pleading relates back to the date of the original pleading when:
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2. The claim or defense asserted in the amended pleading arose out of the conduct, transaction, or occurrence set forth or attempted to be set forth in the original pleading; or
3. The amendment changes the party or the naming of the party against whom a claim is asserted if paragraph 2 of this subsection is satisfied and, within the period provided by subsection I of Section 2004 of this title for service of the summons and petition, the party to be brought in by amendment:
a. Has received such notice of the institution of the action that he will not be prejudiced in maintaining his defense on the merits; and
b. Knew or should have known that, but for a mistake concerning the identity of the proper party, the action would have been brought against him.
12 0.8.2001 § 2015(C).
1 6 Service of process must be made within 180 days of the filing of the petition. 12 0.8.2001 § 2004(I). The effect, when combined with section 2012(C)(8), is that a plaintiff seeking to have an amended petition naming a new or substituted party relate back to the date of the original petition must be able to show, at a minimum, that within 180 days of the filing of the original petition, the new party knew or should have known that "but for a mistake" concerning its identity, the claim would have been brought against it originally,. "New parties cannot be added by way of amendment after the statute of limitations has run unless the requirements of [12 0.8.2001 § 2015(C)] have been met." Bray v. Thomas Energy Sys., Inc.,
T7 The Oklahoma Supreme Court has adopted the federal courts' construction of Rule 15(c) of the Federal Rules of Procedure, which is identical to section 2015(C). Dotson v. Rainbolt,
(1) the plaintiff's claim against the newly-named defendant must have arisen "out of the conduct, transaction, or occurrence set forth ... in the original pleading," see 12 ©.S.2001 § 2015(C)(2);
(2) within 180 days of the filing of the original petition, the newly-named defendant must have "received such notice of the institution of the action that he will not be prejudiced in maintaining his defense on the merits," see 12 00.98.2001 § 2015(C)(8)(a); and
(3) within 180 days of the filing of the original petition, the newly-named defendant "knew or should have known that, but for a mistake concerning [his] identity," the action would have been brought against him originally, see 12 ©.S.2001 § 2015(C)B)(b).
Singletary v. Pa. Dep't of Corr.
T8 Whether the Tisdales' lack of knowledge of ITW's identity was a "mistake" becomes relevant only if there is an issue of fact as to whether, within 180 days of the filing of the original petition, ITW had some actual or imputed knowledge of the lawsuit and its possible role in it. The Tisdales submitted the affidavit of Mr. Tisdale's employer's attorney in the workers' compensation case. That affidavit states that ITW was contacted by a private investigator on the employer's behalf well before the 180-day time limit. The affidavit also states that the Tisdales' attorney was not informed of ITW's identity until after the conclusion of the workers' compensation claim. Viewing that affidavit and all possible inferences from it in the Tisdales' favor, Kang,
T 9 The parties debate the meaning of two Oklahoma cases interpreting section 2012(C). The first, Dotson, 1995 OK. 89,
' 10 Certainly, "the bulk of authority from [federal] Courts of Appeals takes the position that the amendment of a 'John Doe' complaint-ie., the substituting of real names for 'John Doesg' or 'Unknown Persons' named in an original complaint-does not meet the 'but for a mistake' requirement." Singletary,
111 REVERSED AND REMANDED FOR FURTHER PROCEEDINGS.
