Final answer:
A patent is a government rule that grants the inventor the exclusive legal right to produce and sell a product with one or more unique features for a limited time.
Step-by-step explanation:
A patent is a government rule that grants the inventor the exclusive legal right to produce and sell a product with one or more unique features for a limited time. This means that during the duration of the patent, no one else can make, use, or sell the same invention without the inventor's permission. Patents are a form of intellectual property rights that incentivize innovation and protect the rights of inventors. They can be granted for various periods of time depending on the country and type of invention.