Short Answer
No, because ownership and possession of wealth is a prerequisite to Zakah being due. This money is in limbo and belongs to no one, so it is not analogous to a loan.
Reason for Asking the Question
Zakah is due on what you own. The questioner wants to know that although this wealth should belong to you, does it actually belong to you in the case of a lawsuit which you may not win.
Version 0.5 | [Shaykh] Mustafa Umar | 5-22-2020