Honestly, I am not an expert. (I know...I know...Everyone on this board is an expert)(Edit)
BUT, if I read rain's previous post correctly, then if we get patent approval from a larger country, it will trickle down into the smaller countries who will accept their precedence.
(Just realized that answer is not even relevant to your question...ha)
"Do we need patent protection in every country we do sales in?"
Offers to sell within the U.S. without sales in the U.S.
"Since 1996, a U.S. patent grants a right to exclude others from offering to sell within the U.S. a patented invention. Little jurisprudence is available on the "offer to sell" provision, and a number of questions remain open. Specifically, it is not clear (1) what exactly constitutes an "offer," (2) whether a physical embodiment is required to be in existence at the time of the offer, (3) whether an offer requires an ultimate sale, (4) whether the ultimate sale must take place within the U.S., and (5) how to calculate damages to compensate for offers to sell."
I'm just going to assume (might just make an "Ass" out of "U" and Me") that other countries are the same. A patent is : the exclusive right granted by a government to an inventor to manufacture, use, or sell an invention for a certain number of years. (I also think this includes exclusivity (wow thats a word?)). So, it would just protect us from someone taking our idea and selling it to the same country. TL:DR No I don't think we need patents to sell. Night all.
(I hope this post made sense and is relevant, going to sleep)