The creation of a European community patent system, which would lead to a single unitary patent in the European Union (or its predecessor the European Community), has been debated since the 1970s. In 2012 agreement was reached between all European Union Member States except Italy and Spain on a "European patent with unitary effect", more commonly known as the "unitary patent", a proposed new type of patent that would be valid in participating member states of the European Union. Unitary effect can be registered for a European patent upon grant, replacing validation of the European patent in the individual countries concerned. The unitary effect means a single renewal fee, a single (group of) owner(s), a single object of property, and uniform protection, which means that revocation as well as infringement proceedings are to be decided for the unitary patent as a whole rather than for each country individually. Licensing is however to remain possible for individual countries.