osapuoliksi

Osapuoliksi is a Finnish grammatical form used to designate someone as a party in a legal matter or contract. It is the translative form of the noun osapuoli (party or participant) and signals a change of role, i.e., becoming a party in a dispute, agreement, arbitration, or other legal procedure.

In legal drafting and documentation, osapuoliksi is used to describe the participants of a matter or to designate who is acting as a party. It is commonly found with verbs like tulevat (will become) or ovat (are), as in riita-asiassa osapuoliksi tulevat A Oy ja B Oy or Sopimuksessa osapuoliksi nimetään A Oy ja B Oy.

Osapuoliksi is distinguished from the base word osapuoli (a single party) and the plural osapuolet (the parties). The form is used to express the role of those parties within the sentence rather than to name them as a simple noun phrase.

Use cases include contracts, court or administrative proceedings, and alternative dispute resolution. In English, osapuoliksi is commonly translated as "as parties" or "to become parties." The term is primarily encountered in formal legal writing and official documents, where precise designation of participants is important for defining rights, obligations, and procedural roles.