Patricia "Patti" Nyholm is a lawyer that has represented several cases against Stern, Lockhart & Gardner.
- Ep. 5 "Crash," representing a frieght railroad company
- Ep. 17 "Heart," representing LifeState, a medical insurer
- Ep. 21 "In Sickness," representing Harper Hospital
- Ep. 22 "The Dream Team," representing a pharmaceutical company and its insurer
- Ep. 22 "What's in the Box?," representing Mike Kresteva in his gubernatorial campaign
Patti is played by Martha Plimpton.