Source : Webster's Revised Unabridged Dictionary (1913)

Unfiled \Un*filed"\, a. [Pref. un- not + filed, p. p. of file to
   defile.]
   Not defiled; pure. [Obs.] --Surrey.

Source : WordNet®

unfiled
     adj : not filed or recorded in the place prescribed by law; "an
           unregistered trademark"; "an unregistered mortgage"
           [syn: {unregistered}]