"If anyone thought that Symbian really changed anything at the UK-IPO, the IPKat thinks that they are probably either overly optimistic or mistaken. The test, such as it is, is now still the familiar 4-step Aerotel test, but bearing in mind that computer programs can make a technical contribution, contrary to what the 4-step test might suggest. To the IPKat's eye, this seems to be a fudge. Either the whole EPO approach, problem-solution and all, should be used, or none of it. To rely on such a mish-mash of different approaches (which are now apparently incompatible at the EPO) doesn't really make anything clearer, and doesn't seem to help examiners in making the right decisions. Or is that the point?"