Pennsylvania Statutes Title 64 P.S. Public Lands § 422. Effect of caveat

No caveat, note on survey, or writing in the nature of a caveat, hereafter to be entered in either of the offices of the land office  1 of this Commonwealth, shall continue to bar the issuing of a patent to the person or persons, or his, her or their legal representative or representatives, against whom such caveat may be entered, during a longer period than two years from the entry of such caveat, in the land office aforesaid; unless the party or parties interested in the land, or his, her or their agent or agents, assignee or assignees, shall, within the term aforesaid, take out a citation thereon, in order to bring such dispute to a decision, and prosecute the same to effect.