How do you test if a window (by title) is already open from the command prompt?

In a batch file, I'm opening a window with a specific name like this:

@echo off    
start "my log" /D \logs\ /I powershell -nologo -noexit -command "$host.ui.RawUI.WindowTitle = 'My log'"; get-content logfile.log -wait

So the window title is "My log".

I only want to run this command if the window is not already open. is there a bat file command to test for this? I'd rather not use a program or a powershell command, just a simple bat file cmd if possible.