How can one establish the utility of an invention?

Establishing the utility of an invention is fundamentally about demonstrating that the invention is capable of providing some identifiable benefit or practical use. The correct choice emphasizes the importance of illustrating the general usefulness or credibility of the invention, which is a key requirement under the patent law. This means that the inventor must show that the invention has a specific, substantial, and credible utility that is recognized within its field.

For a patent application, utility is one of the three primary criteria (along with novelty and non-obviousness) that must be satisfied for an invention to qualify for patent protection. In practice, illustrating its usefulness can involve providing scientific evidence, technical specifications, or examples of how the invention would be applied in industry or society.

While demonstrating market value may indicate that there is interest in the invention, it does not inherently prove that the invention serves a specific purpose or has utility in the technical sense required for patentability. Similarly, showing that a typical user finds it interesting or providing user testimonials may suggest appeal or desirability but does not confirm a straightforward practical use that meets the legal definition of utility. These approaches may support an assertion of utility, but do not directly establish it as required under patent law.