After teaching his institutional trial technique class for more than 50 years, Fred Lane is stepping aside to let his son take the reins.The Fred Lane Trial Technique Institute — whose nine-month weekly seminar starts again on Tuesday at the Illinois State Bar Association — will now be taught by Scott D. Lane, a partner at Lane & Lane LLC with his oldest brother, Stephen I. Lane.Scott said the decision to take over initially took some convincing, although he’s filled in and helped out over the years …