There are various types of intellectual property rights that can be applied to car designs, depending on the nature and scope of the work. The main ones are design patents, trade dress, and copyright. Design patents protect the ornamental appearance of a car design, such as the shape, color, or texture. You need to apply for a design patent at the relevant office and pay a fee; they usually last for 15 years from the date of grant. Trade dress protects the distinctive look and feel of a car design, such as the logo, grille, or trim. You do not need to register trade dress but you need to prove that your design is recognizable and associated with your brand. Trade dress can last indefinitely as long as it is used in commerce. Copyright protects the artistic expression of a car design, such as sketches, drawings, or models. You do not need to register copyright but you need to mark your work with a symbol and date; copyright can last for your lifetime plus 70 years.