What happens when someone steals your book title?

When I was getting ready to publish my first novel, “Killing the Immortals,” last year, I did a good deal of research on the title to make sure there was nothing similar in the marketplace that it would be confused with. I was excited about the title, and wanted to have something unique. Fortunately, there was nothing like it out there, so I plowed forward with it last July.

Suddenly, though, I noticed last week that a Bosnian author self-published a book on June 30 with the title “Killing t...