Why should I patent?
A patent is a commercial tool which enables you to keep others from exploiting your investment in your invention. However, a patent is also property which can be licensed, sold or mortgaged to others. Some patents can be extremely valuable if the invention is properly exploited.
A decision not to apply for a patent means that the invention is put into the public domain and can be used by anybody when the first product is sold or the invention is shown in public.