June 15 (UPI) — A judge who is turning 99 years old on Saturday is seeking to have her suspension lifted but the U.S. Supreme Court is passing on taking up her case.

The high court decided on Monday to decline Pauline Newman’s request for a hearing to lift her suspension. She is the oldest active federal judge but has been suspended for refusing to submit to mental fitness testing.

Newman argued that she is fit to serve, despite her age and the suggestion otherwise from her colleagues. She filed a lawsuit against her colleagues for suspending her with the U.S. Court of Appeals for the Federal Circuit, alleging that her suspension is unconstitutional.

“The petition presents questions concerning crucial constitutional and statutory aspects of lifetime tenure and judicial independence, especially the availability of judicial review for intra-branch infringements on judicial service,” Newman’s attorneys said in a filing to the Supreme Court.

Newman is indefinitely suspended from taking up new cases. She was suspended three years ago and told by the court’s chief judge, Kimberly Moore, that she may either retire or be given senior status, a type of semi-retirement for judges that reduces their caseload.

Newman has been on the bench for the U.S. Court of Appeals’ Federal Circuit since 1984. The Federal Circuit was established in 1982.

Newman has been called the “Great Dissenter” for writing more than 300 dissenting opinions throughout her career.

In her filing to the U.S. Court of Appeals for the Federal Circuit, Moore said Newman experienced health issues in 2021 that made her “unable to discharge the duties of an active circuit judge.” She adds that Newman fainted following an argument and was unable to walk in 2022. Newman then agreed to reduce her caseload.

After convening with a special committee of two Federal Circuit judges, Moore and the committee ordered Newman to undergo neurological and neuropsychological testing and for her to submit medical records.

Newman shared expert reports from two doctors but the committee recommended that she be barred from hearing any cases for one year, subject to renewal. In September 2023, the court approved the recommendation and she has remained under suspension since.