Charles W. Parker (“Parker”) appeals a final judgment of the United States District Court for the District of Columbia dismissing his patent infringement action against Microsoft Corporation as frivolous. Parker v. Microsoft Corp., No. 06-CV-00540 (D.D.C. Mar. 23, 2006). We review a district court’s frivolousness determination for an abuse of discretion. Denton v. Hernandez, 504 U.S. 25, 32, 112 S.Ct. 1728, 118 L.Ed.2d 340 (1992). Parker’s allegations that he has patented the “elemental atom” and that Microsoft has infringed his rights by using and improperly claiming inventorship of such an invention are “fanciful,” “fantastic,” and “delusional” contentions supporting the district court’s determination. Id. at 33-34, 112 S.Ct. 1728. On appeal, Parker provides us with no persuasive basis to conclude that the district court abused its discretion in dismissing the action. We affirm.