Answering of interrogatories filed by decedent's representative constitutes a waiver of protection afforded by Dead Man's Act even if not used at trial.
Perlis v. Kuhns, Adm'r., 202 Pa. Super. 80, 195 A.2d 156 (1963)
Evidence - Waiver - Dead Man's Act,
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol2/iss2/9