Police say 46-year-old Michael Rauch threw three roundhouse punches at Scranton attorney John Fisher at the Lackawanna County Courthouse in Scranton on Thursday.
The two had been on opposite sides of a civil lawsuit involving a 2003 car crash.
Rauch, of Cherry Hill, N.J., was charged Thursday with simple assault, harassment and disorderly conduct.
Court papers say Rauch told sheriff's deputies that he had told Fisher to leave him alone but that he continued to harass him.
Rauch spent the morning in a holding cell and later left the courthouse on $10,000 unsecured bail. He could not immediately be reached by The Associated Press on Friday.
Fisher is declining comment.
Information from The Scranton Times
