A utility patent is designed for which type of innovation?

A utility patent is specifically intended to protect a new and useful process, machine, article of manufacture, or composition of matter. This type of patent focuses on the functional aspects and practical applications of an invention, ensuring that inventors have exclusive rights to their innovations that provide utility or practical use. By granting this type of patent, the legal system encourages innovation and investment in the development of new technologies and methods.

In contrast, the other options pertain to different intellectual property protections. Design characteristics of a product are safeguarded by design patents, which focus on the aesthetic aspects rather than functionality. Trademarks protect brands and logos, which are essential for distinguishing products in the marketplace, rather than the inventions themselves. Lastly, maintenance of existing products does not involve creating something new, so it would not qualify for any patent protection, as it pertains to the continued use or improvement of existing products rather than the development of new and useful inventions.