Judge Pauline Newman, 96, suspended from hearing cases for at least a year.
Chief Circuit Judge Kimberly Moore cited concerns about Newman's fitness for her role.
Newman served on the U.S. Court of Appeals for the Federal Circuit for 39 years.
Judicial Council of the Federal Circuit initiated an investigation into her performance.
Allegations include memory loss, confusion, and refusal to comply with orders.
Newman's legal team argues suspension and sanctions are unconstitutional.
Newman wishes to continue contributing, particularly in patent law.
The case highlights debates about the age and fitness of judges.