Trefren Construction Co., a Wyoming Corporation v. V&R Construction, Llc, an Ohio Limited Liability Company, and Cocca Development, Ltd., an Ohio Limited Partnership, 386 P.3d 317

Background

Timothy N. Trefren operated "Trefren Construction Co." as a sole proprietorship; he died April 23, 2015, and his Estate later probated assets of the business.
Trefren Construction subcontracted with V&R Construction and Cocca Development to perform site work and building erection for a Shopko project in 2013; disputes arose over unpaid amounts and Trefren sued for ~$115,560.53 in Lincoln County, Wyoming.
Defendants moved to dismiss after discovering Secretary of State records showing no active Wyoming corporation by the name "Trefren Construction," arguing the named plaintiff lacked capacity and the suit should be dismissed.
Trefren moved to substitute the Estate as the real party in interest (invoking W.R.C.P. 17(a), 25, and 15), and submitted an affidavit showing the misidentification of the business form was an honest mistake.
The district court treated the challenge as a Rule 17(a) issue, converted materials to summary judgment, denied substitution and amendment, held the real-party-in-interest requirement jurisdictional, ruled the contracts voidable for alleged misrepresentation, and granted summary judgment for Defendants.
The Wyoming Supreme Court reversed: it held Rule 17(a) requires allowing substitution (and is not jurisdictional here), the district court abused its discretion denying substitution, and summary judgment on contract voidability was improper because Defendants never moved on that theory or carried the prima facie burden.

Issues

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether dismissal was required because the complaint was not prosecuted by the real party in interest	Trefren: Rule 17(a) requires allowance of a reasonable time to substitute the real party (the Estate), not dismissal	Defs: Named plaintiff was not a valid corporate entity and suit must be dismissed for lack of jurisdiction	Court: Rule 17(a) forbids immediate dismissal; the real-party-in-interest requirement is not jurisdictional here; dismissal was error
Whether the district court abused its discretion in denying substitution of the Estate under Rule 17(a)	Trefren: Misnaming was an honest mistake; substitution was timely (filed 3 days after objection); no substantial prejudice to Defs	Defs: Substitution prejudices them; would change defenses/counterclaims and require new discovery; delay in litigation	Court: Abuse of discretion to deny substitution — mistake was honest, delay measured from objection was reasonable, and alleged prejudice insufficient
Whether the district court properly converted the motion and granted summary judgment that contracts were voidable due to misrepresentation	Trefren: No notice or opportunity to defend against a voidability theory; Defs never moved for summary judgment on that ground	Defs: Argued they would have explored misrepresentation if they'd known business was a sole proprietorship	Court: Reversed — Defs did not make a prima facie showing and Trefren had no notice to rebut; summary judgment on that basis was procedurally improper
Whether prior Wyoming precedent treated the real-party-in-interest requirement as jurisdictional	Trefren: Rule 17(a) is procedural; substitution should relate back; prior cases applying Rule 17(a) are distinguishable	Defs: Cited Wyoming cases treating the requirement as jurisdictional	Court: Overruled cases to the extent they treat the real-party-in-interest requirement as jurisdictional; it is not jurisdictional

Key Cases Cited

Esposito v. U.S., 368 F.3d 1271 (10th Cir. 2004) (permits substitution under Rule 17 despite original plaintiff's lack of capacity and explains relation-back effect)
Mari v. Rawlins Nat. Bank of Rawlins, 794 P.2d 85 (Wyo. 1990) (discussed in context of real-party-in-interest requirement)
McNeiley v. Ayres Jewelry Co., 886 P.2d 595 (Wyo. 1994) (prior Wyoming decision treating real-party-in-interest as jurisdictional)
Gardner v. Walker, 373 P.2d 598 (Wyo. 1962) (early Wyoming authority on real-party-in-interest concept)
Lincoln Property Co. v. Roche, 546 U.S. 81 (U.S. 2005) (Rule 17(a) addresses party joinder, not subject-matter jurisdiction)
Scheufler v. General Host Corp., 126 F.3d 1261 (10th Cir. 1997) (insufficient prejudice to oppose Rule 17 joinder where discovery could address defenses)