The lawyer deals with issues of patents, intellectual property, trademarks, copyrights and trade secrets. Intellectual property refers to an idea or creation of the mind that in modern times can lead to the ess and downfall of a company. You may have heard of companies filing lawsuits and patents against their competitors for stealing or copying their idea or design. Intellectual property (IP) lawyers handle such cases. Among the types of lawyers, these lawyers are in high demand due to the increase in the number of start-ups and the growth of businesses.