body: I read in a [blog post](http://www.burnsautoparts.com/blog/2014/09/24/i-hate-stories-like-this/) that to file an infringement suit, I need to have registered my work registered with the US copyright office before the infringement took place. However, I can't find anything about this on the website of the US copyright office, just that it needs to be filed before the suit is filed.
  
  
  When do I have to register my work with the copyright office to file an infringement suit?
  
  
  
title: When do I have to register my copyright if I want to file an infringement suit?