The present invention relates to novel crystal forms of 4-{[4-({[4-(2,2,2-trifluoroethoxy)-1,2-benzisoxazol-3-yl]oxy}methyl)piperidin-1-yl]methyl}-tetrahydro-2H-pyran-4-carboxylic acid. More particularly, the invention relates to polymorph forms (Polymorph Form I, Polymorph Form II, Polymorph Form III, Polymorph Form IV, Polymorph Form V, and Polymorph Form VI), and to processes for the preparation of, compositions containing and to uses of, such polymorph forms.本發明係關於4-{[4-({[4-(2,2,2-三氟乙氧基)-1,2-苯并異唑-3-基]氧基}甲基)哌啶-1-基]甲基}-四氫-2H-吡喃-4-羧酸的新型晶體形式。更加具體而言,本發明係關於多形體形式(多形體形式I、多形體形式II、多形體形式III、多形體形式IV、多形體形式V及多形體形式VI)和製備該些多形體形式之方法、含有該些多形體形式之組合物以及該些多形體形式的用途。