Pennsylvania Statutes Title 42 Pa.C.S.A. Judiciary and Judicial Procedure § 8352. Existence of probable cause

(1) reasonably believes that under those facts the claim may be valid under the existing or developing law;

(2) believes to this effect in reliance upon the advice of counsel, sought in good faith and given after full disclosure of all relevant facts within his knowledge and information; or

(3) believes as an attorney of record, in good faith that his procurement, initiation or continuation of a civil cause is not intended to merely harass or maliciously injure the opposite party.