arrest and detention of suspected terrorists was found to violate protected rights according to Brogan v. The United Kingdom, an ECHR decision in which the court reviewed the arrest in Northern Ireland of four persons under a 1984 British law that created a special powers derogation from the established proscription against warrantless arrests. Civil law European Union law In terms of European Union legislation, a derogation can also imply that a member state delays the implementation of an element of an EU Regulation (etc.) into their legal system over a given timescale, such as five years; or that a member state has opted not to enforce a specific provision in a treaty due to internal circumstances (typically a state of emergency). Catholic canon law In canon law a dispensation affirms the validity of a law, but asserts that the law will not be held to apply to one or more specific persons, for a specific reason. (For example, while the Catholic Church's canon law does not normally recognise gender transition, an intersex woman may present appropriate medical documentation to seek, and possibly receive, a dispensation from the Holy See to live and be recognised as a man, or vice versa.) Derogation, on the other hand, affects the applicability of a law in general. A non-canon-law analogue of dispensation might be the issuing of a zoning variance to a particular business, while a general rezoning applied to all properties in an area is more analogous to derogation. See also Implied repeal Obrogation Repeal State of emergency References Bibliography Della Rocca, F. (1959) (trans. Rev. Anselm Thatcher, O.S.B.), Manual of Canon Law. Milwaukee: The Bruce Publishing Company. External links Catholic Encyclopedia Derogation Civil law (legal system) European Union law Emergency laws Catholic Church legal terminology