A skilled patent lawyer can assist a person in successfully applying for a patent and in bringing a patent infringement lawsuit. A patent is generally issued to legally protect unique design, process or new product ideas. Inventors and innovators apply for patent protection in order to preserve their financial and other rights accruing from their work. A lawyer can assist the inventor or innovator in the application process by helping to distinguish the design or process from other similar ideas that may already have patent protection. A patent lawyer may also be able to bring patent infringement lawsuits, or defend their client against a patent infringement lawsuit brought by another party. A lawyer who practices in this field is often called an intellectual property lawyer.