The frequency of revaluations depends on the volatility of the fair values of the intangible
assets being revalued. If the fair value of a revalued asset differs materially from its carrying
amount, a further revaluation is necessary. Some intangible assets may experience significant and volatile movements in fair value, thus necessitating annual revaluation. Such frequent
revaluations are unnecessary for intangible assets with only insignificant movements in fair
value.