Last mentioned: Feb 23, 2026
SCOTUS Certiorari
The U.S. Supreme Court agrees to hear the industry's appeal on jurisdictional grounds.
SCOTUS Hearing
The Supreme Court agrees to hear oral arguments in the appeal, escalating the case to the highest level.
SCOTUS Petition
ExxonMobil and Suncor petition the U.S. Supreme Court to review the jurisdictional question.
10th Circuit Ruling
The appeals court affirms that the case belongs in state court, rejecting the energy companies' jurisdictional arguments.
Appellate Affirmation
The 10th Circuit Court of Appeals affirms that the case belongs in state court.
Remand Ordered
A federal district court orders the case back to state court, rejecting industry arguments.
Lawsuit Filed
Boulder and San Miguel County sue Suncor and Exxon in Colorado state court.
Lawsuit Filed
Boulder and San Miguel County file suit against ExxonMobil and Suncor in Colorado state court.
The U.S. Supreme Court has agreed to hear an appeal in a long-running climate liability lawsuit filed by the city and county of Boulder, Colorado. The ruling could determine whether dozens of similar local climate cases across the country can proceed in state courts or must be dismissed under federal law.
The U.S. Supreme Court has agreed to hear an appeal from fossil fuel companies seeking to move a climate change lawsuit filed by Boulder, Colorado, from state to federal court. This pivotal decision will likely determine the legal venue and viability for dozens of similar climate-related litigations nationwide.