Since September 2006, fifty-six judges from circuit and district courts around the country have sat with the Federal Circuit. A list of the visiting judges who have sat with the court through November, 2015 is available here [1].

Since September 2006, fifty-six judges from circuit and district courts around the country have sat with the Federal Circuit. A list of the visiting judges who have sat with the court through November, 2015 is available here [1].
Links
[1] http://www.cafc.uscourts.gov/sites/default/files/judicial-reports/vjchartforwebsite2006-2015.pdf