The U.S. Supreme Court declined to hear several cases on Monday, including a challenge to the University of Michigan's comprehensive firearms ban on campus. This refusal leaves intact a lower court ruling that classified the university as a "sensitive place," allowing it to prohibit firearms on all university property, including for concealed pistol license holders. In addition, the Court rejected a petition related to a $6.6 million patent infringement verdict involving allegations of fraud, as well as a challenge to summary judgment rulings on patent eligibility in a case against Amazon. The Court also refused to review an antitrust case filed by CSX against Norfolk Southern concerning fees charged by a jointly owned Virginia switching line. Furthermore, the Supreme Court declined to hear an appeal by two Nebraska tribal companies seeking to overturn an Eighth Circuit decision permitting state regulation of cigarette sales by a tribally owned manufacturer to Indigenous distributors. Lastly, the justices appeared skeptical of a Fourth Circuit ruling that dismissed an inmate's appeal on procedural grounds, a case expected to impact pro se litigants disproportionately.