1. The document is a test on business environment for a student named P. Keerthika in the 1st year of an MBA program. It includes definitions and explanations of patents. 2. A patent is an official document from a government that gives the holder the exclusive right to make, use, or sell an invention for a set period of time. It protects the invention from being copied by others. 3. There are three main types of patents: utility patents for novel and useful inventions, design patents for a product's design or image, and plant patents for novel plant varieties that can reproduce.