"feist" proved most important in the area of copyright of legal case law publications. although one might assume that the text of u.s. case law is in public domain, thomson west had claimed a copyright as to the first page citations and internal pin-point page citations of its versions of court opinions (case law) found in its printed versions of the case law ("west's citation claims.") west also had claimed a copyright in the text of its versions of the case law, which included parallel citations and typographical corrections ("west's text claims.") the text claim would have barred anyone from copying the text of a case from a west case law reporter, since the copied text would include west enhancements to which west claimed copyright.