American Airlines has asked the U.S. Supreme Court to reverse a lower-court decision that found its now-scrapped U.S. Northeast partnership with JetBlue Airways violated federal antitrust law. America

The U.S. District Court in Massachusetts ruled against American's partnership with JetBlue, and AA lost its appeal last November. Now the airline wants to take its case to the Supreme Court.

American Airlines has asked the Supreme Court to reverse a ruling that blocked a revenue-sharing partnership the carrier had with JetBlue to coordinate flights. In court papers made public on Monday the Texas-based airline asked the justices to reevaluate a November appeals court ruling maintaining that American Airlines and JetBlue’s Northeast Alliance,