1
general::
Regarding, in the matter of, in that instance. For example, In the case of James, they decided to promote him to the next grade. [Late 1300s] Also see IN CASE, def. 2.
American Heritage Idioms
2
general::
Phrase(s): in the case of someone or something
in the matter of someone or something; in the instance of someone or something. • In the case of John, I think we had better allow his request. • In the case of this woman, we’ll not grant permission.
McGrawhill's American Idioms And Phrasal Verbs