Patent infringement occurs when someone makes, uses, sells, or distributes a patented invention without permission from the patent holder. A patent is a legal right granted to an inventor by the government, giving them exclusive control over their invention for a certain period. This means that others cannot legally exploit the invention without the inventor's consent. When a patent infringement is suspected, the patent holder can take legal action against the infringer. This may involve filing a lawsuit to seek damages or an injunction to stop the infringing activity. Protecting patents is essential for encouraging innovation and ensuring that inventors can benefit from their creations.