The energy for an endergonic reaction is obtained by coupling the reaction with an exergonic reaction. A familiar example of coupling exergonic reactions to endergonic reactions to promote spontaneity comes from ATP.
That's a key distinction, because foreign countries with weak patent laws routinely inundate the market with knockoff products. The only way you're going to control your product in the market is if you have the ability to tell others to stop, Wolin says. In the United States and elsewhere, it's the patent system. That's the only way..
A good prototype is important if you intend to license your product or have it manufactured and market it yourself. Marketing is a very important part of the invention process. Many great inventions have failed due to poor marketing. In this day and age there are numerous options for marketing your invention.