This practice remained in place until 7 February 2008 when, following the judgment in Astron Clinica and other's Applications, the UKIPO issued a new Practice Note stating that they would return to their previous practice of permitting claims to computer programs if claims to a method performed by running a suitably programmed computer or to a computer programmed to carry out the method were themselves allowable. This change affirmed the established practice of considering the substance of the invention over the particular way it was claimed but it was not thought that it would cause a material change in the subject matter which would be deemed patentable by the UKIPO.