Law of India refers to the system of law in modern India. India maintains a hybrid legal system with a mixture of civil, common law and customary or religious law within the legal framework inherited from the colonial era and various legislation first introduced by the British are still in effect in modified forms today. Since the drafting of the Indian Constitution, Indian laws also adhere to the United Nations guidelines on human rights law and the environmental law. Certain international trade laws, such as those on intellectual property, are also enforced in India.