Intellectual Property is an umbrella term that has come to refer broadly to a range of laws that normally have as their unifying feature the grant of exclusive rights over intangible assets. Such assets include inventions, artistic and literary works, brands, trade secrets and certain kinds of data. Intellectual property law is traditionally described as having four main doctrinal fields: patent, trade secret, copyright and trademark. These fields of law are, in turn, prevalent in many traditional practice areas involving the regulation of media, science and technology.