Interesting. Did they specifically say they paid a design patent licensing fee to TBLLC? The pattern was developed and production began in 1974. I am not aware of an existing design patent on it. Not even an expried one. And nowhere have I read a Schrade claim that it was a patented design. I have a copy of the trademark registration for "Sharp Finger", which TBLLC renewed after they purchased the IP, but to my knowledge, Camillus has never used that trademark.
#73021047 04/15/1975 SHARP FINGER mark
(appl.5/09/74) First Use Date: 1974-02-25
04/26/2005 Taylor Cutlery LLC