Nolo's Plain-English Law Dictionary

Pro Per

A term derived from the Latin "in propria persona," meaning "for one's self," used in some states to describe a person who handles his or her own case, without a lawyer. In other states, the term pro se is used. When a nonlawyer files his or her own legal papers, that party is expected to write "in pro per" under his or her name in the heading on the first page.
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