In Kamco Building Supply v. Kearney and Schweitzer, 95 Delaware County (PA) Reports 180 (2007), Pagano, J., read opinion here, the Delaware County (PA) Court of Common Pleas discussed the Pennsylvania Long Arm Statute and refused to find jurisdiction over a New Jersey lawyer in Pennsylvania when that lawyer was not licensed in PA and did not have an office in PA and apparently had no ties to PA other than suing a PA company in New Jersey.