However, I think most indie authors won't register an imprint, nor check to see whether
the same imprint name is being used (many don't even check to see if their book title is free).
Not exact matches
You can have as many
imprints as you want, even with the
same name.
Whether it's a nice person working 3rd shift in the Phillipines for Xlibris or a somewhat slicker sales person calling from Author House or any one of a number of «Your
Name Imprinted Here» Author Solutions
imprints like Westbow Press and Abbot Press, the pitch is the
same.
(However, they probably won't recognize the
imprint; using an
imprint certainly isn't the
same as publishing with a household
name.)