Window World International v. Jill O'Toole, 21 F.4th 1029

Window World International (trademark owner) and Window World, Inc. (exclusive licensee) market exterior remodeling products through independent franchisees, including franchises co-owned by the Lomax parties.
In 2015 Lomax and other franchisees sued Window World in North Carolina state court seeking relief that would affect their license rights; Window World counterclaimed and the N.C. litigation continued for years.
In April 2019 the Lomax parties sent a customer letter allegedly using Window World’s stylized window trademark and misstating warranty terms; Window World filed a Lanham Act suit in E.D. Mo. for false advertising, trademark infringement, unfair competition, and dilution.
The district court dismissed some claims but found plausible Lanham Act infringement and unfair-competition claims and then granted the defendants’ Colorado River-based motion to stay the federal case pending resolution in the N.C. action of the scope of the parties’ trademark licenses.
Window World appealed the stay as an abuse of discretion; the Eighth Circuit majority dismissed the appeal for lack of appellate jurisdiction, concluding the stay was interlocutory and not tantamount to a dismissal or collateral order.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Appellate jurisdiction over district-court stay	Window World: stay was effectively a surrender of federal forum and thus immediately appealable	Lomax: stay was proper under Colorado River; appealability not disputed by them in dissent	Majority: No jurisdiction — the stay is interlocutory, not tantamount to dismissal, nor within the collateral-order exception; appeal dismissed
Whether state and federal proceedings are "parallel"	Window World: N.C. litigation does not likely resolve the federal claims based on the 2019 Letter; state case lacks those claims	Lomax: N.C. suit seeks declarations about rights to use marks and could preclude federal claims if defendants prevail	Majority: District court did not show substantial likelihood the state case would fully resolve the Lanham claims; no record that N.C. action would resolve the 2019 Letter issues
Appropriateness of Colorado River stay (abuse of discretion)	Window World: stay was improper because prerequisites for Colorado River abstention weren’t shown	Lomax: exceptional circumstances exist (license scope central, state suit first-filed and further advanced, risk of piecemeal litigation)	Majority: Declined to reach merits of discretion; observed stay may be defensible but such review is for a final appeal after judgment

Colorado River Water Conservation Dist. v. United States, 424 U.S. 800 (1976) (permits dismissal/abstention in exceptional circumstances when parallel state proceedings justify federal deference)
Moses H. Cone Mem’l Hosp. v. Mercury Constr. Corp., 460 U.S. 1 (1983) (stay is appealable only when it surrenders federal jurisdiction or is effectively a dismissal; collateral-order exception narrowly applied)
Cottrell v. Duke, 737 F.3d 1238 (8th Cir. 2013) (analysis for when a stay is tantamount to dismissal and thus appealable)
Fru-Con Constr. Corp. v. Controlled Air, Inc., 574 F.3d 527 (8th Cir. 2009) (parallelism requires substantial likelihood state proceedings will fully dispose of federal claims)
Kreditverein der Bank Austria Creditanstalt fur Niederösterreich und Bergenland v. Nejezchleba, 477 F.3d 942 (8th Cir. 2007) (appellate jurisdiction analysis for stays)
Michelson v. Citicorp Nat’l Servs., Inc., 138 F.3d 508 (3d Cir. 1998) (discussion of parallelism and finality for Colorado River stays)
Lunde v. Helms, 898 F.2d 1343 (8th Cir. 1990) (stay orders are ordinarily interlocutory, not final)
Boushel v. Toro Co., 985 F.2d 406 (8th Cir. 1993) (stay appealability and finality principles)