Perfect

Complete; finished; executed; enforceable; without defect; merchantable; marketable.

To perfect a title is to record or register it in the proper place so that one's ownership will be established against all others.

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perfect (with stress on the second syllable) v. 1) to complete, to take all required steps to achieve a result, such as obtaining a lien or other security by legal action or completing and filing all documents to present a case to a court of appeals. A mechanic's lien for labor and/or materials used to improve real property is "perfected" by filing a lawsuit and obtaining a judgment that the lien attaches to the property. 2) to make perfect. (See: mechanic's lien)

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PERFECT. Something complete.
     2. This term is applied to obligations in order to distinguish those which may be enforced by law, which are called perfect, from those which cannot be so enforced, which are said to be imperfect. Vide Imperfect; Obligations.