1) Brand imitation refers to products that borrow attributes from famous brands such as name, shape or color but are not identical copies. There are several types of imitation including counterfeits, design copies, technological leapfrogging, knockoffs/clones, and creative adaptations. 
2) Factors that affect the speed of imitation include time, legislation, customer demand, suppliers, production process complexity, technology diffusion, and intellectual property protection levels. Imitation strategies can include piracy, cloning, mimicking, and creative adoption. 
3) First movers have advantages like lower costs, less competition, better channel relationships and customer satisfaction. However, later entrants can benefit from technological progress, lower risks,