The concept of subjective right has become one of the constitutional right’s most relevant institutions, the way we understand it nowadays. This is why this article pretends to introduce the reader into one of the currents of thinking of the contemporaneous Philosophy of Rights, namely, the one related to the ethics of rights. For that purpose, after setting the context for the reader as to the characteristic problems of these schools, the article is then centered unto the reconstruction of the debate between the deontological theories and the consequencialist theories of rights, in order to demonstrate that the mere acceptance of the moral importance of subjective rights and their structuring in normative texts, are not enough as criteria for their implementation. We, furthermore, need to be aware of the consequences generated by the adjudication of individual rights, if we do not wish to generate oppression through a protection instrument.