Since this work was first published after 1922 with the prescribed copyright notice, it is unlikely that this work is public domain in the USA. However, it is in the public domain in Canada (where IMSLP is hosted), the EU, and in those countries where the copyright term is life+70 years or less.
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||Leipzig: C.F. Peters, No.3880, 1927. Plate 10585.
||Partita in geschlossener Folge
||Partita : in geschlossener Folge für Klavier zu zwei Händen
According to Hofmeister's Monatsbericht (1927), p.240, the title of the published version of the work has 1927 in it, generally meaning that 1927 is also composition date. However, can find no other evidence of this, and some library sources give  rather than ©1927 for publication date- is 1927 actually copyrighted on score (which I can't see there :) )? - Schissel (not doubting year of pub., just c/nd status)
- Copyright date is on first page of music.--Cypressdome 15:13, 14 June 2014 (EDT)