I would think that it would have no effect since an invention that has not reached the point of "being ready for patening" cannot be sold. On the other hand, if the invention has been fully developed and you are just seeking funding to go into production, and as part of the kickstarter funding you are providing the investor with the invention once it is produced, then you would be safer to file a patent application before putting it on kickstarter.
Answered on Jul 22nd, 2013 at 3:25 PM